Too much exercise causes cancer!!
You just knew that this had to be the case!
He said overexercise can create more oxidative stress, in which oxygen molecules called free radicals are formed that damage DNA and cells in ways that can accumulate to spur cancer. . . .
Of course, on the other side there is this:
In the study, women who reported high levels of physical activity were 23 percent less likely to develop lung cancer than those who were the least active, report Dr. Kathryn H. Schmitz of the University of Pennsylvania in Philadelphia and colleagues. And among women who smoked, greater activity was tied to a 28 percent lower lung cancer risk, while women who were ex-smokers showed a 37 percent lower risk with more activity. . . .
Of course, on the other side there is this:
posted by John Lott at 5:36 PM
3 Comments:
Hi John, Afraid I can't agree with the position that too much exercise causes cancer. My personal experience has been regular moderate exercise is an extremely powerful cancer treatment and preventative. I suspect this is for two reasons. Cancer needs glucose to grow and regular exercise routes the glucose production to the muscles for repair and energy. Cancer also thrives in an oxygen deprived environment. The increased uptake of oxygen due to exercise raises the pH and oxygen level of the blood. Again a powerful anti-cancer state of agent.
Pdazzler
What an ignorant theory! Exercising as much as you can burns off calories and fat and if you eat too much of what isn't too good for you, that will increase a risk to other things but you cannot say a little too much exercise causes cancer! It's down to what you eat and what you do in your lifestyle, not to how proactive you are! I doubt you are a professional John.
Dear pdazzler and Lauren:
I was citing these studies because I thought that it was so silly. The exclamation points should have been a give away.
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