If weight loss is simply cals in / cals out, why do post menopausal women have a harder time losing weight?

Question

Same goes for older people in general. Is it harder to lose weight because they simply move less? What’s happening that makes weight loss so much harder in 30s and above?

In: Biology

Answer 1

Cals in / cals out is all that matters; however cals out is impacted by various factors such as lifestyle, hormones & metabolic rate.