In our society we tend to categorize skinny people as healthy and heavier people as unhealthy, but a new study out of England suggests that it isn’t as clear cut. They studied over 75,000 people searching for a gene linked to lower body fat percentage. They found IRS1. In addition to having lower body fact, the gene seems to be connected to higher glucose levels, higher cholesterol, and more visceral fat.

The study claimed that men in particular can appear lean, but still have a change of developing heart disease and diabetes. They suggest that all people—no matter our weight or size adhere to a healthy lifestyle and exercise routine.