That's a overweight persons overused go to excuse, "oh its hormonal or I have a poor metabolism". Its a true reason for a very small proportion of people, but not the 60-70%+ in western world that are overweight or obese. Majority never admit its that they drink 6L of sugar laced soda a day, eat a family size bag of chips in one sitting, never exercise, or only eat high calorie fast food.

I have a close family member who since their early teens, has a on-going thyroid issue, who according to BMI, is considered overweight. They are not obese though, never eat or drink poorly, have a job that requires standing all day, are athletic and play on multiple high-energy sports teams, can easily MTB on mountain climbs with me, sometimes over 30 miles in a day, without breaking a sweat, or murder black diamond ski hills all day in the winter. By my measure, they have valid claim to be overweight, solely due to health issues, but they are the far exception, not the norm.