Men are responsible for menopause in women, new research from a team of McMaster University scientists has shown. Biology professor Rama Singh, along with his colleagues Jonathan Stone and Richard Morton, have found that menopause is the result of natural selection. Researchers have proven that men have always had a preference for younger women when it comes to procreation. For this reason, it was not necessary for older women to continue to be fertile after a certain age. Menopause represents an irreversible cessation of the functioning of the ovaries – a final cessation of menstruation, in which there is an impossibility of pregnancy. Doctors define menopause as the period occurring after the last menstrual bleeding. It is a series of changes that can begin between the ages of 30 and 40 and continue into the 50s and even 60s. Menopause is a unique phenomenon in nature. Apart from human beings, only killer whales and whales stop breeding relatively early. “If men procreated with older women, menopause would not have occurred at all,” said Professor Rama Singh. His research was published in the journal PLoS Biolog. Ultimately, the results of the study suggest that menopause could disappear one day, Prof. Singh said. According to him, if women chose only young men to breed with them, then men would lose their fertility at a certain age.