I have long warned about getting fixated on “weight.” Generally, though body “weight” tends to go up as people age, their lean tissue (bone, muscle, tendons, ligaments, connective fascia, brain matter, etc.) goes down. It atrophies. And one day, when it’s atrophied enough, we finally notice it and call it sarcopenia, osteoporosis, “bad knees,” “bad shoulders,” “bad back,” “dementia,” “Alzheimer’s,” etc. Those conditions were brewing a long time ago. But we refused to acknowledge them until they crossed a threshold of extreme dysfunction; and then we throw our hands up in exasperation: “this was NEVER a problem before; I guess it’s just part of getting older.” Nope. It doesn’t have to be that way.
Even modest consistent training reverses that trend, according to this study: