
Monday, February 23, 2009
Tuesday, February 3, 2009
Dead athletes' brains show damage from concussions
(CNN) -- For years after his NFL career ended, Ted Johnson could barely muster the energy to leave his house
"I'd [leave to] go see my kids for maybe 15 minutes," said Johnson. "Then I would go back home and close the curtains, turn the lights off and I'd stay in bed. That was my routine for two years.
"Those were bad days."
These days, the former linebacker is less likely to recount the hundreds of tackles, scores of quarterback sacks or the three Super Bowl rings he earned as a linebacker for the New England Patriots. He is more likely to talk about suffering more than 100 concussions.
"I can definitely point to 2002 when I got back-to-back concussions. That's where the problems started," said Johnson, who retired after those two concussions. "The depression, the sleep disorders and the mental fatigue."
Until recently, the best medical definition for concussion was a jarring blow to the head that temporarily stunned the senses, occasionally leading to unconsciousness. It has been considered an invisible injury, impossible to test -- no MRI, no CT scan can detect it. Watch more on what goes on in athlete's brains »
But today, using tissue from retired NFL athletes culled posthumously, the Center for the Study of Traumatic Encephalopathy (CSTE), at the Boston University School of Medicine, is shedding light on what concussions look like in the brain. The findings are stunning. Far from innocuous, invisible injuries, concussions confer tremendous brain damage. That damage has a name: chronic traumatic encephalopathy (CTE).
On Tuesday afternoon, researchers at the CSTE released a study about the sixth documented case of CTE in former NFL player Tom McHale, who died in 2008 at the age of 45, and the youngest case to date, an 18-year-old multi-sport athlete who suffered multiple concussions.
While CTE in an ex-NFL player's brain may have been expected, the beginnings of brain damage in an 18-year-old brain was a "shocking" finding, according to Dr. Ann McKee, a neuropathologist at the Veterans Administration Hospital in Bedford, Massachusetts, and co-director of the CSTE.
"We think this is how chronic traumatic encephalopathy starts," said McKee. "This is speculation, but I think we can assume that this would have continued to expand."
CTE has thus far been found in the brains of six out of six former NFL players.
"What's been surprising is that it's so extensive," said McKee. "It's throughout the brain, not just on the superficial aspects of the brain, but it's deep inside."
CSTE studies reveal brown tangles flecked throughout the brain tissue of former NFL players who died young -- some as early as their 30s or 40s.
McKee, who also studies Alzheimer's disease, says the tangles closely resemble what might be found in the brain of an 80-year-old with dementia.
"I knew what traumatic brain disease looked like in the very end stages, in the most severe cases," said McKee. "To see the kind of changes we're seeing in 45-year-olds is basically unheard of."
The damage affects the parts of the brain that control emotion, rage, hypersexuality, even breathing, and recent studies find that CTE is a progressive disease that eventually kills brain cells.
Chris Nowinski knows well the impact of concussions. He was a football star at Harvard before wrestling professionally with World Wrestling Entertainment.
In one moment, his dreams of a long career wrestling were dashed by a kick to his chin. That kick, which caused Nowinski to black out and effectively ended his career, capped a career riddled with concussions.
"My world changed," said Nowinski. "I had depression. I had memory problems. My head hurt for five years."
Nowinski began searching for studies, and what he found startled him.
"I realized when I was visiting a lot of doctors, they weren't giving me very good answers about what was wrong with my head," said Nowinski. "I read [every study I could find] and I realized there was a ton of evidence showing concussions lead to depression, and multiple concussion can lead to Alzheimer's."
Nowinski decided further study was needed, so he founded the Sports Legacy Institute along with Dr. Robert Cantu, a neurosurgeon and the co-director of the CSTE. The project solicits for study the brains of ex-athletes who suffered multiple concussions.
Once a family agrees to donate the brain, it is delivered to scientists at the CSTE to look for signs of damage.
So far, the evidence of CTE is compelling.
The Center for the Study of Traumatic Encephalopathy, along with other research institutions, has now identified traumatic encephalopathy in the brains of late NFL football players John Grimsley, Mike Webster, Andre Waters, Justin Strzelczyk and Terry Long, in addition to McHale.
Grimsley died of an accidental gunshot wound to the chest. Webster, Long and Strzelczyk all died after long bouts of depression, while Waters committed suicide in 2006 at age 44. McHale was found dead last year of an apparent drug overdose.
"Guys were dying," said Nowinski. "The fact of the matter was guys were dying because they played sports 10 or 20 years before."
So far, around 100 athletes have consented to have their brains studied after they die.
Ted Johnson was one of the first to sign up. He said he believes that concussions he suffered while playing football explain the anger, depression and throbbing headaches that occasionally still plague him.
Johnson said he played through concussions because he, like many other NFL athletes, did not understand the consequences. He has publicly criticized the NFL for not protecting players like him.
"They don't want you to know," said Johnson. "It's not like when you get into the NFL there's a handout that says 'These are the effects of multiple concussions so beware.' "
In a statement, the NFL indicated that their staffs take a cautious, conservative approach to managing concussions.
While they support research into the impact of concussions, they maintain that, "Hundreds of thousands of people have played football and other sports without experiencing any problem of this type and there continues to be considerable debate within the medical community on the precise long-term effects of concussions and how they relate to other risk factors."
The NFL is planning its own independent medical study of retired NFL players on the long-term effects of concussion.
"Really my main reason even for talking about this is to help the guys who are already retired," said Johnson. "[They] are getting divorced, going bankrupt, can't work, are depressed, and don't know what's wrong with them. [It is] to give them a name for it so they can go get help."
"The idea that you can whack your head hundreds of times in your life and knock yourself out and get up and be fine is gone," said Nowinski. "We know we can't do that anymore. This causes long-term damage."
"I'd [leave to] go see my kids for maybe 15 minutes," said Johnson. "Then I would go back home and close the curtains, turn the lights off and I'd stay in bed. That was my routine for two years.
"Those were bad days."
These days, the former linebacker is less likely to recount the hundreds of tackles, scores of quarterback sacks or the three Super Bowl rings he earned as a linebacker for the New England Patriots. He is more likely to talk about suffering more than 100 concussions.
"I can definitely point to 2002 when I got back-to-back concussions. That's where the problems started," said Johnson, who retired after those two concussions. "The depression, the sleep disorders and the mental fatigue."
Until recently, the best medical definition for concussion was a jarring blow to the head that temporarily stunned the senses, occasionally leading to unconsciousness. It has been considered an invisible injury, impossible to test -- no MRI, no CT scan can detect it. Watch more on what goes on in athlete's brains »
But today, using tissue from retired NFL athletes culled posthumously, the Center for the Study of Traumatic Encephalopathy (CSTE), at the Boston University School of Medicine, is shedding light on what concussions look like in the brain. The findings are stunning. Far from innocuous, invisible injuries, concussions confer tremendous brain damage. That damage has a name: chronic traumatic encephalopathy (CTE).
On Tuesday afternoon, researchers at the CSTE released a study about the sixth documented case of CTE in former NFL player Tom McHale, who died in 2008 at the age of 45, and the youngest case to date, an 18-year-old multi-sport athlete who suffered multiple concussions.
While CTE in an ex-NFL player's brain may have been expected, the beginnings of brain damage in an 18-year-old brain was a "shocking" finding, according to Dr. Ann McKee, a neuropathologist at the Veterans Administration Hospital in Bedford, Massachusetts, and co-director of the CSTE.
"We think this is how chronic traumatic encephalopathy starts," said McKee. "This is speculation, but I think we can assume that this would have continued to expand."
CTE has thus far been found in the brains of six out of six former NFL players.
"What's been surprising is that it's so extensive," said McKee. "It's throughout the brain, not just on the superficial aspects of the brain, but it's deep inside."
CSTE studies reveal brown tangles flecked throughout the brain tissue of former NFL players who died young -- some as early as their 30s or 40s.
McKee, who also studies Alzheimer's disease, says the tangles closely resemble what might be found in the brain of an 80-year-old with dementia.
"I knew what traumatic brain disease looked like in the very end stages, in the most severe cases," said McKee. "To see the kind of changes we're seeing in 45-year-olds is basically unheard of."
The damage affects the parts of the brain that control emotion, rage, hypersexuality, even breathing, and recent studies find that CTE is a progressive disease that eventually kills brain cells.
Chris Nowinski knows well the impact of concussions. He was a football star at Harvard before wrestling professionally with World Wrestling Entertainment.
In one moment, his dreams of a long career wrestling were dashed by a kick to his chin. That kick, which caused Nowinski to black out and effectively ended his career, capped a career riddled with concussions.
"My world changed," said Nowinski. "I had depression. I had memory problems. My head hurt for five years."
Nowinski began searching for studies, and what he found startled him.
"I realized when I was visiting a lot of doctors, they weren't giving me very good answers about what was wrong with my head," said Nowinski. "I read [every study I could find] and I realized there was a ton of evidence showing concussions lead to depression, and multiple concussion can lead to Alzheimer's."
Nowinski decided further study was needed, so he founded the Sports Legacy Institute along with Dr. Robert Cantu, a neurosurgeon and the co-director of the CSTE. The project solicits for study the brains of ex-athletes who suffered multiple concussions.
Once a family agrees to donate the brain, it is delivered to scientists at the CSTE to look for signs of damage.
So far, the evidence of CTE is compelling.
The Center for the Study of Traumatic Encephalopathy, along with other research institutions, has now identified traumatic encephalopathy in the brains of late NFL football players John Grimsley, Mike Webster, Andre Waters, Justin Strzelczyk and Terry Long, in addition to McHale.
Grimsley died of an accidental gunshot wound to the chest. Webster, Long and Strzelczyk all died after long bouts of depression, while Waters committed suicide in 2006 at age 44. McHale was found dead last year of an apparent drug overdose.
"Guys were dying," said Nowinski. "The fact of the matter was guys were dying because they played sports 10 or 20 years before."
So far, around 100 athletes have consented to have their brains studied after they die.
Ted Johnson was one of the first to sign up. He said he believes that concussions he suffered while playing football explain the anger, depression and throbbing headaches that occasionally still plague him.
Johnson said he played through concussions because he, like many other NFL athletes, did not understand the consequences. He has publicly criticized the NFL for not protecting players like him.
"They don't want you to know," said Johnson. "It's not like when you get into the NFL there's a handout that says 'These are the effects of multiple concussions so beware.' "
In a statement, the NFL indicated that their staffs take a cautious, conservative approach to managing concussions.
While they support research into the impact of concussions, they maintain that, "Hundreds of thousands of people have played football and other sports without experiencing any problem of this type and there continues to be considerable debate within the medical community on the precise long-term effects of concussions and how they relate to other risk factors."
The NFL is planning its own independent medical study of retired NFL players on the long-term effects of concussion.
"Really my main reason even for talking about this is to help the guys who are already retired," said Johnson. "[They] are getting divorced, going bankrupt, can't work, are depressed, and don't know what's wrong with them. [It is] to give them a name for it so they can go get help."
"The idea that you can whack your head hundreds of times in your life and knock yourself out and get up and be fine is gone," said Nowinski. "We know we can't do that anymore. This causes long-term damage."
Friday, January 9, 2009
Social Psychology: Oscar Grant
The officer involved in a New Year's Day shooting that left a passenger dead in a crowded Oakland, California, subway station resigned Wednesday, a Bay Area Rapid Transit spokesman said.
BART spokesman Linton Johnson said in a statement that the officer's attorney and his union representative submitted the resignation at a meeting Wednesday morning with BART police investigators.
The resignation was effective immediately.
In the statement, Johnson said the officer's attorney had postponed a meeting with investigators Monday and on Tuesday asked for a delay until next week. That request was denied, and the Wednesday meeting was scheduled. The officer did not show, Johnson said.
Shortly before the funeral for the passenger, 22-year-old Oscar Grant, on Wednesday, Johnson said Mehserle had been moved at least twice because of death threats to him and his family.
The BART officer fatally shot Grant in the back after he and some friends were pulled from a train car following a report of an altercation, according to a BART statement.
On Tuesday, attorney John Burris filed a $25 million claim with BART in which he identified the officer as Johannes Mehserle. Several local media outlets had already identified the officer.
Burris alleges in the claim, "Without so much as flinching the Officer Mehserle stood over Grant and mercilessly fired his weapon, mortally wounding Mr. Grant with a single gunshot wound to the back."
Johnson said Mehserle's attorney -- reportedly David E. Mastagni of Sacramento -- has advised him not to speak to investigators. Nor has Mehserle made any public statements.
An attorney in Mastagni's office, Christopher Miller, confirmed the resignation Wednesday, saying Mehserle had the support of the BART Police Officers' Association.
CNN affiliate KTVU-TV in Oakland obtained videos of the incident and its prelude. One video, which KTVU reported came from a train passenger who wished not to be identified, shows three young men against a wall in the Fruitvale station.
Burris told CNN on Tuesday that the young men had been celebrating the new year at a popular waterfront tourist spot, The Embarcadero. They were heading home when police pulled them from the train car about 2 a.m.
Some of the young men were handcuffed, but not 22-year-old Oscar Grant. The video from the anonymous passenger shows Grant seated on the floor with his back against the wall.
Grant holds up his hands, appearing to plead with police. Burris said Tuesday that Grant was asking police not to use a Taser.
"He said to them, 'Don't Tase me; I have a 4-year-old daughter,' " Burris said.
The interaction on the video is not audible.
Seconds later, police put Grant face-down on the ground. Grant appears to struggle. One of the officers kneels on Grant as another officer stands, tugs at his gun, unholsters it and fires a shot into Grant's back.
Burris said the bullet went through Grant's back and then ricocheted off the floor and through his lungs. Grant died seven hours later at a hospital, KTVU reported.
In Wednesday's statement about Mehserle's resignation, BART General Manager Dorothy Dugger said that the "shooting is a tragic event in every respect for all involved."
"We recognize that the family and friends of Oscar Grant are in mourning, and we extend our condolences," she said.
Johnson has said Mehserle, who had been on the force two years, is devastated and is presumed innocent. He also says that the videos making the media rounds are inconclusive and that there is more to the story than what can be seen on the grainy images.
There are two surveillance cameras at the Fruitvale station, but a BART official said Tuesday that no video is being released at this time.
Burris called the shooting "unconscionable" and said the $25 million claim alleges wrongful death and violation of civil rights by use of excessive force.
BART has 45 days to respond, he said. If the authority rejects the claim, he will file a civil lawsuit, said Burris, who served as Rodney King's co-counsel in King's civil case against the Los Angeles Police Department in the 1990s.
Burris has spoken to witnesses who claim that Grant was trying to resolve the situation.
"He had been telling people to calm down. 'Be cool. Just do what they tell you to do,' " the attorney said.
Johnson told KTVU that authorities are trying to determine whether Mehserle accidentally drew his gun instead of his Taser.
Burris said he is pushing Alameda County District Attorney Tom Orloff to press second-degree murder charges, or involuntary manslaughter charges if evidence suggests that Mehserle mistook his gun for a Taser, he said.
"No one wants to believe a cop would just kill somebody like that," he said. "My view is, this is criminal conduct, period."
Orloff said Wednesday that his investigation will focus primarily on what led to the shooting.
Some homicides are lawful, he noted. In this case, Orloff said, "the part that needs dissecting is what, if anything, can be determined about the mental state of the actor," meaning the officer.
There are many possibilities, he said: His office could find no basis for criminal charges; the office could file involuntary manslaughter charges if Mehserle exercised gross negligence, voluntary manslaughter if Mehserle reasonably believed that he was acting in self-defense or murder if Mehserle acted with malice and forethought.
"Our function is to determine whether or not criminal charges should be filed against the officer," he said. "These things are usually an issue of weeks rather than days."
BART Police Chief Gary Gee released a statement this week expressing condolences for Grant's family and saying the authority is cooperating with Orloff's office.
Gee added that BART will complete an "unbiased and thorough investigation" and asked the public to be patient.
BART spokesman Linton Johnson said in a statement that the officer's attorney and his union representative submitted the resignation at a meeting Wednesday morning with BART police investigators.
The resignation was effective immediately.
In the statement, Johnson said the officer's attorney had postponed a meeting with investigators Monday and on Tuesday asked for a delay until next week. That request was denied, and the Wednesday meeting was scheduled. The officer did not show, Johnson said.
Shortly before the funeral for the passenger, 22-year-old Oscar Grant, on Wednesday, Johnson said Mehserle had been moved at least twice because of death threats to him and his family.
The BART officer fatally shot Grant in the back after he and some friends were pulled from a train car following a report of an altercation, according to a BART statement.
On Tuesday, attorney John Burris filed a $25 million claim with BART in which he identified the officer as Johannes Mehserle. Several local media outlets had already identified the officer.
Burris alleges in the claim, "Without so much as flinching the Officer Mehserle stood over Grant and mercilessly fired his weapon, mortally wounding Mr. Grant with a single gunshot wound to the back."
Johnson said Mehserle's attorney -- reportedly David E. Mastagni of Sacramento -- has advised him not to speak to investigators. Nor has Mehserle made any public statements.
An attorney in Mastagni's office, Christopher Miller, confirmed the resignation Wednesday, saying Mehserle had the support of the BART Police Officers' Association.
CNN affiliate KTVU-TV in Oakland obtained videos of the incident and its prelude. One video, which KTVU reported came from a train passenger who wished not to be identified, shows three young men against a wall in the Fruitvale station.
Burris told CNN on Tuesday that the young men had been celebrating the new year at a popular waterfront tourist spot, The Embarcadero. They were heading home when police pulled them from the train car about 2 a.m.
Some of the young men were handcuffed, but not 22-year-old Oscar Grant. The video from the anonymous passenger shows Grant seated on the floor with his back against the wall.
Grant holds up his hands, appearing to plead with police. Burris said Tuesday that Grant was asking police not to use a Taser.
"He said to them, 'Don't Tase me; I have a 4-year-old daughter,' " Burris said.
The interaction on the video is not audible.
Seconds later, police put Grant face-down on the ground. Grant appears to struggle. One of the officers kneels on Grant as another officer stands, tugs at his gun, unholsters it and fires a shot into Grant's back.
Burris said the bullet went through Grant's back and then ricocheted off the floor and through his lungs. Grant died seven hours later at a hospital, KTVU reported.
In Wednesday's statement about Mehserle's resignation, BART General Manager Dorothy Dugger said that the "shooting is a tragic event in every respect for all involved."
"We recognize that the family and friends of Oscar Grant are in mourning, and we extend our condolences," she said.
Johnson has said Mehserle, who had been on the force two years, is devastated and is presumed innocent. He also says that the videos making the media rounds are inconclusive and that there is more to the story than what can be seen on the grainy images.
There are two surveillance cameras at the Fruitvale station, but a BART official said Tuesday that no video is being released at this time.
Burris called the shooting "unconscionable" and said the $25 million claim alleges wrongful death and violation of civil rights by use of excessive force.
BART has 45 days to respond, he said. If the authority rejects the claim, he will file a civil lawsuit, said Burris, who served as Rodney King's co-counsel in King's civil case against the Los Angeles Police Department in the 1990s.
Burris has spoken to witnesses who claim that Grant was trying to resolve the situation.
"He had been telling people to calm down. 'Be cool. Just do what they tell you to do,' " the attorney said.
Johnson told KTVU that authorities are trying to determine whether Mehserle accidentally drew his gun instead of his Taser.
Burris said he is pushing Alameda County District Attorney Tom Orloff to press second-degree murder charges, or involuntary manslaughter charges if evidence suggests that Mehserle mistook his gun for a Taser, he said.
"No one wants to believe a cop would just kill somebody like that," he said. "My view is, this is criminal conduct, period."
Orloff said Wednesday that his investigation will focus primarily on what led to the shooting.
Some homicides are lawful, he noted. In this case, Orloff said, "the part that needs dissecting is what, if anything, can be determined about the mental state of the actor," meaning the officer.
There are many possibilities, he said: His office could find no basis for criminal charges; the office could file involuntary manslaughter charges if Mehserle exercised gross negligence, voluntary manslaughter if Mehserle reasonably believed that he was acting in self-defense or murder if Mehserle acted with malice and forethought.
"Our function is to determine whether or not criminal charges should be filed against the officer," he said. "These things are usually an issue of weeks rather than days."
BART Police Chief Gary Gee released a statement this week expressing condolences for Grant's family and saying the authority is cooperating with Orloff's office.
Gee added that BART will complete an "unbiased and thorough investigation" and asked the public to be patient.
Thursday, January 8, 2009
Tuesday, January 6, 2009
Monday, January 5, 2009
Learning and Social Class
Do you think the designation of a particular social class plays a role in how we learn? Why or why not?
Wednesday, December 17, 2008
Brainy guy, better sperm?
By Brian Alexander
It may seem counterintuitive to those males among us who spent more time in high school reading Dickens or studying calculus than we did making out with Stephanie the cheerleader, but a group of researchers has issued a study finding that higher IQ men have better sperm.
Take that, Mr. Quarterback.
But before the pocket protector set starts strutting in their Radiohead T-shirts, hang on a minute. As interesting and possibly important to a certain subgroup of scientists as the study may be, it says much more about our obsession with grading our masculinity than it does about brains and sperm.
The point of the study was to test a theory about “fitness factor,” explained lead author Rosalind Arden of King’s College, London. Fitness factor, according to the researchers, involves the clues, such as waist-to-hip ratios, that signal we have good genes in general and will produce tip-top babies.
“I chose to analyze the relationship between sperm and intelligence because I thought that if we were serious about the fitness factor idea, then even two [apparently] unrelated traits might be correlated,” she said. In other words, they didn’t set out to prove that smart men have better sperm.
“The bigger idea of the fitness factor,” Arden explained, “is that beauty, health, intelligence, personality - may all exist in a giant web - traced out by the spider of evolutionary fitness.” In other words, one gene or big set of genes that may bestow some fitness traits, like body symmetry, may also confer less obvious ones, like good sperm.
Conveniently for the researchers, in 1985 the U.S. government conducted something called the Vietnam Experience Study, in which war veterans underwent a battery of tests, including intelligence and various physiological measures. Some of the men supplied semen samples. Arden and colleagues examined the data to correlate IQ with semen. It turned out that there was a small link between higher IQ and better semen.
So, smarter guys tend to have higher quality sperm, they found. But the reality is, there is no intellectual push-up a man can do to give himself better— that is, more fit or more aggressive sperm.
“If you’re going to be a Go Master,” Arden said, making a pun of a movie about a genius of the Chinese board game, “do it for the love of the stones - not to improve your sperm quality.”
We’d make our sperm happier just by wearing boxers rather than tighty whities and letting those boys breathe.
While the researchers judged quality based on number, density and swimming ability, sperm experts — also known as andrologists — consider other factors to be equally important to fertility, like how the sperm interacts with an egg. The shape, structure and health of the sperm are also important. A normal sperm has a long tail and an oval-shaped head that whips it forward to the egg.
To get healthy sperm, it's recommend that men take a daily multivitamin with selenium, zinc and folic acid, nutrients that are important for sperm function, according to the Mayo Clinic. Guys should also exercise regularly and maintain a healthy weight. Smoking tobacco, pot or drinking too much alcohol can wreck havoc on sperm. Same for stress and steroids.
So, practically speaking, while possibly important to science, the study doesn’t mean much for the average guy. It is, Arden said, “akin to one tiny piece in one of those god-awful humungous jigsaws given by well-meaning aunts as 'improving' Christmas gifts to small boys.”
But the study did reveal a lot about human psychology. To read some of the breathless press coverage, it was a eugenicist’s dream come true. “There are few better ways of upsetting a certain sort of politically correct person than to suggest that intelligence (or, rather, the variation in intelligence between individuals) is under genetic control,” The Economist gleefully noted.
Yet cause-and-effect is not nearly so clear cut. Genes do influence intelligence and a number of studies have linked higher intelligence with better health, according to Douglas Detterman, a professor of psychology at Case Western Reserve University and editor of the journal Intelligence, in which Arden’s paper appeared. For example, higher IQ men have been shown to have less risk of dying of coronary heart disease. Such findings have spawned a new field called “cognitive epidemiology.” But nobody knows why it occurs.
“There is a lot of speculation,” said Detterman. “It could be that people with lower IQs receive inadequate treatment. Perhaps they require more instruction on how to follow doctors’ orders.”
It might also be that people with lower IQs aren’t inherently less fit; they just make less money and cannot afford top quality care. “Disentangling all these factors is complicated,” he said.
So it looks like smart boys are going to have to stick with bait like Shakespeare’s sonnets and Ferraris bought with proceeds from inventing high-tech gadgets to attract the women with whom we’d like to share those sperm.
It may seem counterintuitive to those males among us who spent more time in high school reading Dickens or studying calculus than we did making out with Stephanie the cheerleader, but a group of researchers has issued a study finding that higher IQ men have better sperm.
Take that, Mr. Quarterback.
But before the pocket protector set starts strutting in their Radiohead T-shirts, hang on a minute. As interesting and possibly important to a certain subgroup of scientists as the study may be, it says much more about our obsession with grading our masculinity than it does about brains and sperm.
The point of the study was to test a theory about “fitness factor,” explained lead author Rosalind Arden of King’s College, London. Fitness factor, according to the researchers, involves the clues, such as waist-to-hip ratios, that signal we have good genes in general and will produce tip-top babies.
“I chose to analyze the relationship between sperm and intelligence because I thought that if we were serious about the fitness factor idea, then even two [apparently] unrelated traits might be correlated,” she said. In other words, they didn’t set out to prove that smart men have better sperm.
“The bigger idea of the fitness factor,” Arden explained, “is that beauty, health, intelligence, personality - may all exist in a giant web - traced out by the spider of evolutionary fitness.” In other words, one gene or big set of genes that may bestow some fitness traits, like body symmetry, may also confer less obvious ones, like good sperm.
Conveniently for the researchers, in 1985 the U.S. government conducted something called the Vietnam Experience Study, in which war veterans underwent a battery of tests, including intelligence and various physiological measures. Some of the men supplied semen samples. Arden and colleagues examined the data to correlate IQ with semen. It turned out that there was a small link between higher IQ and better semen.
So, smarter guys tend to have higher quality sperm, they found. But the reality is, there is no intellectual push-up a man can do to give himself better— that is, more fit or more aggressive sperm.
“If you’re going to be a Go Master,” Arden said, making a pun of a movie about a genius of the Chinese board game, “do it for the love of the stones - not to improve your sperm quality.”
We’d make our sperm happier just by wearing boxers rather than tighty whities and letting those boys breathe.
While the researchers judged quality based on number, density and swimming ability, sperm experts — also known as andrologists — consider other factors to be equally important to fertility, like how the sperm interacts with an egg. The shape, structure and health of the sperm are also important. A normal sperm has a long tail and an oval-shaped head that whips it forward to the egg.
To get healthy sperm, it's recommend that men take a daily multivitamin with selenium, zinc and folic acid, nutrients that are important for sperm function, according to the Mayo Clinic. Guys should also exercise regularly and maintain a healthy weight. Smoking tobacco, pot or drinking too much alcohol can wreck havoc on sperm. Same for stress and steroids.
So, practically speaking, while possibly important to science, the study doesn’t mean much for the average guy. It is, Arden said, “akin to one tiny piece in one of those god-awful humungous jigsaws given by well-meaning aunts as 'improving' Christmas gifts to small boys.”
But the study did reveal a lot about human psychology. To read some of the breathless press coverage, it was a eugenicist’s dream come true. “There are few better ways of upsetting a certain sort of politically correct person than to suggest that intelligence (or, rather, the variation in intelligence between individuals) is under genetic control,” The Economist gleefully noted.
Yet cause-and-effect is not nearly so clear cut. Genes do influence intelligence and a number of studies have linked higher intelligence with better health, according to Douglas Detterman, a professor of psychology at Case Western Reserve University and editor of the journal Intelligence, in which Arden’s paper appeared. For example, higher IQ men have been shown to have less risk of dying of coronary heart disease. Such findings have spawned a new field called “cognitive epidemiology.” But nobody knows why it occurs.
“There is a lot of speculation,” said Detterman. “It could be that people with lower IQs receive inadequate treatment. Perhaps they require more instruction on how to follow doctors’ orders.”
It might also be that people with lower IQs aren’t inherently less fit; they just make less money and cannot afford top quality care. “Disentangling all these factors is complicated,” he said.
So it looks like smart boys are going to have to stick with bait like Shakespeare’s sonnets and Ferraris bought with proceeds from inventing high-tech gadgets to attract the women with whom we’d like to share those sperm.
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About Me
- N. Valdez
- Miami, FL, United States
- I teach AP Psychology, American Government, Economics, American History, World History, and Inquiry Skills at Miami Edison Senior High, where we are "Rising to the Challenge!"