Mom’s gastric bypass surgery might benefit her offspring’s DNA


When a woman undergoes weight loss surgery, her own body isn’t the only one affected: children born to women after they’ve undergone gastric bypass procedures exhibit key genetic differences compared to siblings born prior to the surgeries.

That’s according to a small new study published in PNAS this week. Researchers tracked 20 women, all of whom lost nearly 100 pounds following a specific type of gastric bypass surgery — wherein one’s digestive system is redirected to limit food intake and caloric absorption — as well as their children. When the team evaluated children born after a mother’s surgery, they found 5,698 genes that were expressed differently from those of siblings born before a mother had lost weight.

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