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A comment on Exercising for Healthier Eyes.

Re:Exercising for Healthier Eyes by jobu on Thursday March 27, 2014 @12:39PM (#7481514)
"These growth factors, especially one called brain-derived neurotrophic factor, or B.D.N.F., are known to contribute to the health and well-being of neurons and consequently, it is thought, to improvements in brain health and cognition after regular exercise."

That's interesting, and it sounds great, but like nearly any study of the brain there is conflicting information from other studies:

"Brain-derived neurotrophic factor (BDNF) overexpression in the forebrain results in learning and memory impairments." http://www.ncbi.nlm.nih.gov/pubmed/19095063*

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Re:Exercising for Healthier Eyes by a_c_s on Thursday March 27, 2014 @01:05PM (#7481746)
Where's the conflict? Plenty of chemicals/hormones/etc. in the body follow the pattern of:

too little = bad enough = good too much = bad

A study showing the chronic, high levels of something are bad doesn't generalize to mean that increasing levels is always (or even usually) a bad thing.

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