As we age the manner in which we carry adipose tissue changes as we age. We carry more adipose tissue internally.
According to the ACSM, “Disribution of body fat is sex specific from the third to seventh decade. Whereas women tend to exhibit greater increases in internal body fat after age 45 years, men accumulate greater subcutaneous fat. The previously discussed losses in fat free mass with aging have been associated with decreases in basal metabolic rate of approximately 5% per decade throughout adulthood, which in turn is a contributing factor along with genetics in fat gain.”
Hope this is of help.