I have quite badly arthritic hands and I find that wearing a good, well fitting pair of gloves greatly improves matters for me as is also keeping them warm and even having tools that have warmed handles.
As for getting fat.... Apart from the arthritis, I also have a crumbling spine, cages over some of the vertebrae and now also suffer from some quite bad cardiological and respiratory problems which are restricting my levels of physical exercise, however despite the pain and despite my general inability to do so, I still force myself to do 2 x 4 miles walks each day as well as also trying to do some time on my turbo trainer mounted bike. It hurts, it often leaves me feeling totally washed out, but it is keeping me going, it is also, along with a very healthy diet keeping my weight very much under control.
At the age of 71 in addition to the 9 different medications I am on these days and on a daily basis I always have my first alcoholic drinks at 1600 hrs. with this normally being a 500 or 750 mil beer and a large whisky chaser, we almost always eat at close to 1800 hrs. when we will always have at least one bottle of wine. Now when living over in France where they even serve wine with your meals in hospital they expect everyone to drink and now over here, finally my GP and the consultants I am under all agree my disgusting habit isn't doing me any harm whatsoever
Whenever I am prescribed a different type of medication, I always look my amazing GP straight in the eyes, she then checks the details of the drug before saying "and yes Philip you can take them with a drink" !!