According to The Guardian, children of overweight men may be at greater risk of obesity due to genetic changes carried in their father’s sperm, a study suggests. Scientists found a pattern of genetic markers in the sperm of obese men that have the potential to affect brain development and appetite control. The changes were absent in the sperm of lean men.

Allan Pacey, professor of andrology at Sheffield University, said the study was intriguing and worthy of further investigation. But he added that it was too early to say what the observations meant for human health. “Until we know more, would-be parents should just aim to be as healthy as possible at the time of conception and not be drawn to faddy diets or other activities in order to try and influence the health of their children in ways we don’t properly understand.”

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