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Testosterone affects many of the body's functions throughout a man's life. Some studies have attempted to link declining testosterone production in later life to decreased cognitive function, but no firm connection has yet been found.
A number of studies have shown a link between increased consumption of red meat and an increased risk of colon cancer. Dietary changes and regular exercise are the best options for reducing one's risk.
A study in Greece found that men who napped regularly were
significantly less likely to die of heart disease. Naps also tend
to reduce fatigue and stress and improve alertness and mood.
I know that smoking is very bad for me. I've cut down to one
cigarette after lunch and another after dinner each day, with two
or three more on most weekend nights when I socialize. I really
enjoy smoking, but I want to know if I'm harming myself.