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Men Literally Die for Sex

Men Literally Die for Sex Although everyone dies, men die at a higher rate than women across a lifespan — meaning that more men die per year than women.

A new study suggests that this excess mortality is the price of reproductive competition.

Women invest more physiologically in reproduction than men, thus men compete with other men for mating partners and try to make themselves attractive to women.

The researchers suggest that this sort of competition leads to strategies that are riskier for men both behaviorally and physiologically. Because of these greater risks, men have higher levels of mortality.

“If mating competition is responsible for excess male mortality, then the more mating competition there is, the higher excess male mortality will be,” said Kruger, an assistant research professor in the University of Michigan School of Public Health.

In the current study, Kruger shows that two factors related to the level of male reproductive competition contribute to higher rates of risk-taking and mortality.

The first factor is polygyny, the social situation in which one man maintains sexual relations with many women (the opposite is polyandry, which is one women and many men). Several species of primates show high levels of polygyny, where one dominant male mates with most of the females in the group, and other males are left out.

Human cultures have varying degrees of polygyny, and Kruger found that the more prevalent the practice, the higher the rate of male mortality.

In a polygynous culture, men receive enormous evolutionary benefits from becoming dominant. Those guys get all the gals, almost literally. Non-dominant men are left with few, or none, to choose from. In a polygynous group, winning males reap huge rewards; everyone else gets next to nothing.

The second factor: the degree of economic inequality. In mate selection, men are valued for the resource investment that they can provide, bringing benefits to their offspring. The wider the gap between rich and poor, the more likely men are to die young.

In less egalitarian societies, a man with what scientists call “resource control” — money, property and economic security — is more likely to find sexual partners.

In both of these cases, there’s a yawning gap between climbing to the top of the heap — either as the dominant male or the wealthiest — and falling short. To lose position in polygynous or economically extreme societies is to lose almost any chance at finding a sexual partner.

What’s more, Kruger says, these two factors are related, because getting the lion’s share of economic wealth is often virtually the same thing as becoming dominant male.

And so the battle to be “king of the hill” turns deadly. When winners take all, men have very little to lose — and a whole lot to gain — by risking everything to get to the top.

Kruger conducts research in the field of evolutionary psychology, the study of how present-day human thinking and behavior has been shaped by past evolutionary adaptations. It turns out that some other primates display such winner-take-all behavior, and there’s a strong evolutionary reason behind it.

By dominating most or all of the sexual encounters in a group, males who are higher on the social and economic ladder are more likely to pass their genes onto the next generation.

The opposite case, Kruger found, also holds true: The more egalitarian a society, and the more devoted to monogamy, the less extreme the risk-taking. But no human culture, Kruger concluded, is perfectly free of such competition.

Source: University of Michigan

Men Literally Die for Sex

Rick Nauert PhD

Rick Nauert, PhDDr. Rick Nauert has over 25 years experience in clinical, administrative and academic healthcare. He is currently an associate professor for Rocky Mountain University of Health Professionals doctoral program in health promotion and wellness. Dr. Nauert began his career as a clinical physical therapist and served as a regional manager for a publicly traded multidisciplinary rehabilitation agency for 12 years. He has masters degrees in health-fitness management and healthcare administration and a doctoral degree from The University of Texas at Austin focused on health care informatics, health administration, health education and health policy. His research efforts included the area of telehealth with a specialty in disease management.

APA Reference
Nauert PhD, R. (2015). Men Literally Die for Sex. Psych Central. Retrieved on June 19, 2018, from https://psychcentral.com/news/2010/05/26/men-literally-die-for-sex/14091.html

 

Scientifically Reviewed
Last updated: 6 Oct 2015
Last reviewed: By John M. Grohol, Psy.D. on 6 Oct 2015
Published on PsychCentral.com. All rights reserved.