In my mid 50s I'm now the slimmest I've been since a teenager. Not all good: I can't keep anything in a back trouser pocket as there's no padding to cushion it if I sit on something hard and I cracked a rib because there's no protective padding there either.
All I did was give up oily food. After a while you don't have a choice; you can't eat greasy food. I'd starve to death locked in a McDonalds.
A grip strengthener can be used when walking or driving.
The Sock