By Dr. Brian McDonough, Medical Editor

PHILADELPHIA (CBS) – There is a really strange study being done at McMaster University in Canada. They asked the question, why is there menopause?

READ MORE: Philadelphia Commerce Director Michael Rashid Resigns After He Reportedly Made Anti-Semitic Remarks, Verbally Abused His Staff

To answer it they literally created groups of virtual men and virtual women on the computer and gave them a wide array of genetic patterns and traits.

READ MORE: Philadelphia Union Miss Out On Eastern Conference Championship Amid COVID Crisis

In groups where they programmed genes into the women that would produce infertility after a certain age, menopause occurred, and also programmed the men to prefer younger mates: the menopause genes were passed along, and menopause would appear in the population.

However, if they programmed the men to equally prefer women of all ages, those menopause genes never took hold in the population.

MORE NEWS: Perry, McDonagh Lead Lightning In 7-1 Win Over Flat Flyers

The theory is that physical changes can occur as a result of reproductive issues.