Increased Age-Related Muscle Loss
After around age 30, we naturally experience lean muscle decline by 3-8% every decade. Other age-related illnesses, including arthritis or injuries, also reduce lean muscle. That suggests a higher amount of fat than lean muscle that needs more calories. Consequently, there will be a possible increase in weight if you do not strength train and continue consuming the same food amounts as you did when younger.
Potential Hormonal Changes
Men and women undergo hormonal changes. The effect on weight is more on women during menopause-45-55 years. They undergo a huge estrogen drop, encouraging fat accumulation in the belly region. It becomes more noticeable and increases the risk of diabetes type 2 and blood pressure. Conversely, men experience reduced testosterone levels that disrupt fat distribution and muscle strength. This declines the body’s effects in burning calories, leading to weight gain.