My aging knees improved greatly, and I attribute it to eating two small handfuls of walnuts daily.
In the past I have had two cortisone shoots in my right knee over a period of eight years. I haven't had any more shots for several years now. I do not use a cane, but I do not kneel at church, but just sit at the edge of my seat instead.
I am 79 now, and get a lot of health tips from articles and slide shows at Web MD. Great motivators! Right now the only medication I take is one baby aspirin before going to bed.
That site can be very helpful with regard to good eating.
Being five feet tall and weighing 107 pounds consistently helps me feel best.
The food market is where I can check my weight and blood pressure!
Here is the section about diet and fitness: http://www.webmd.com/diet/default.htm