I've recently became interested in the effects if testosterone on the cognitive function in men, but cannot find much hard scientific evidence on the subject.
What are the cognitive effects of increasing testosterone levels in men?. There's a tremendous amount of anecdotal evidence from body builders, etc, but I'm looking for hard science, where the levels were measured before and after, and the trials were less than a month long.
Some of the claims made about increased testosterone levels seem very interesting, and I would like to know if any of that is true.
- does increasing testosterone levels increase subjective feeling of well being in men?
- does increased testosterone benefit concentration ?
- does increased testosterone benefit non-sexual motivation or ambition?
- does increased testosterone benefit logical/math/engineering endeavors?
Here's what I see on Wikipedia snippet on testosterone and brain:
The literature suggests that attention, memory, and spatial ability are key cognitive functions affected by testosterone in humans. Preliminary evidence suggests that low testosterone levels may be a risk factor for cognitive decline and possibly for dementia of the Alzheimer's type, a key argument in life extension medicine for the use of testosterone in anti-aging therapies. Much of the literature, however, suggests a curvilinear or even quadratic relationship between spatial performance and circulating testosterone, where both hypo- and hypersecretion (deficient- and excessive-secretion) of circulating androgens have negative effects on cognition.