Cardiology

Exploring the role of insulin in heart disease among men

Men have shorter life expectancy than women, in part due to the higher rates of heart disease among men. To address this disparity, heart disease is now being considered with the well-established evolutionary biology theory ...

Obstetrics & gynaecology

Research shows OB-GYNs hesitate to talk about fertility

A new study shows that many OB-GYNs are uncomfortable counseling their patients on fertility at a time when more women are delaying pregnancy and needing their doctors to be more vigilant about this education.

Psychology & Psychiatry

Why do men find a lower waist-to-hip ratio sexier?

Male turkeys famously will attempt to mate with a head on a stick. In fact, gobblers prize a snug snood over the whole hen. How far then can a man's ideal sexual partner be stripped?

Obstetrics & gynaecology

What couples considering IVF need to know

(HealthDay)—In vitro fertilization (IVF) is widely used in the United States to help infertile couples have children. But there are a number of things people should know when considering it, an infertility specialist says.

Health

How often do people have sex?

Australians report having sex once or twice a week, on average. For Brits, it's less than once a week, while Americans report having sex two to three times a week.

Psychology & Psychiatry

Are women more attracted to 'dark and brooding' men?

A paper co-authored by a researcher from the University's Institute of Psychology, Health and Society states that women are generally drawn to men with dark and brooding looks. This in turn may relate to their reproductive ...

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Reproductive success

Reproductive success is defined as the passing of genes onto the next generation in a way that they too can pass those genes on. In practice, this is often a tally of the number of offspring produced by an individual. A more correct definition, which incorporates inclusive fitness, is the relative production of fertile offspring by a genotype. For example, the offspring produced as a result of normal mating are an example of reproductive success, because they too can pass their genetic material on to the next generation. Alternatively, the birth of a mule as a result of the mating of a horse and a donkey is not an example of reproductive success because the mule is sterile and thus not able to continue the germ line.

Reproductive success is part of the calculation for fitness and a key element in the theories of natural selection and evolution.

This text uses material from Wikipedia, licensed under CC BY-SA