Word: libido
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Dates: during 2000-2009
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...Romantic love versus love of the Game? No contest. The raw energy in the roaring slapshot, the primal urge to throw somebody into the boards, the sheer ecstasy of scoring the beautiful goal—to seek these is all the libido we could ever need. Romance and relationships are noisy and complicated, inevitably fraught with unpleasant difficulties. But a simple, crisp, pinpoint pass from one end of the ice to the other—executed with just a single, silent look—is nothing less than two souls moving in perfect harmony...
Testosterone, after all, can boost muscle mass and sexual drive. (It can also cause liver damage and accelerate prostate cancer, but more on that later.) That makes it central to two of this culture's rising preoccupations: perfecting the male body and sustaining the male libido, even when the rest of the male has gone into retirement. So will testosterone become the next estrogen, a hormone that causes men to bang down their doctor's doors, demanding to be turned into Mr. T? Do not underestimate the appeal of any substance promising to restore the voluptuous powers of youth...
Some researchers are taking seriously the still controversial notion of "male menopause," a constellation of physical changes, including fatigue, depression and drooping libido, that they believe can be traced to the decline of hormones, including testosterone, in men over 50. Others are not so sure. "One thing we have to recognize is that the decline in testosterone is also intertwined with changes, such as decrease in blood flow, and psychological and social changes too," says Dr. Kenneth Goldberg, medical director of the Men's Health Center in Dallas. "Simply expecting to take men who are androgen deficient and expecting testosterone...
Once you get past the proven links between testosterone, libido and muscle mass, the benefits of having higher levels of testosterone become harder to prove, though no less interesting to hear about. Just how much of a role does this play in producing behaviors such as aggression, competitiveness and belligerence? Men who take testosterone by injection routinely report that in the first days after the shot, when their T counts are especially high, they feel increased confidence, well-being and feistiness--what you might call swagger. They also describe feeling snappish and fidgety...
...that testosterone and aggression go hand in hand. Castrate species after species, and you get a pussycat. Boost the testosterone with injections and the castrated animal acts more like a tiger. In one study of men, when the testosterone levels were suppressed (in this case by researchers using medications) libido and dominant behaviors dropped. But when a mere 20% of the testosterone was added back, libido and domination climbed to the levels where they had started. Which suggests that men do not need much of the stuff to go on doing whatever it is they have already learned...