Hey friend, I was having age related issues too - however a friend recommended a couple of books for me, and well I feel 20 years younger (everywhere, as embarrassing it is to say).
If you have the time, take a look at a book called The Starch Solution by Dr. John McDougall. It won't fix everything, but I can't recommend it highly enough for anyone.
If you have Netflix then you can watch a documentary called Forks Over Knives, or What The Health. They are based on the same topic.