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This Probably Isn't Slowing It Down

"The number one thing my patients blame is their thyroid, even after their internist has ordered tests that show it's functioning normally," says Margaret McKenzie, MD, an ob-gyn at the Cleveland Clinic who sees a lot of peri-menopausal and menopausal women dealing with a seemingly sudden weight gain and looking for answers. "The real problem is usually a combination of lifestyle factors, like eating well during the day but having two glasses of wine every night or not getting enough physical activity, especially strength training."
The Takeaway: An underactive thyroid can cause weight gain (hypothyroidism affects roughly 4.6 percent of Americans, and it's most common in people over 60), but it's best to take a hard look at your eating and exercise habits, especially if your doc has run tests that suggest your thyroid isn't responsible.