I'm 57 and diagnosed on 23/12/16. Am asointerested in best course of action.
Reading upon things, it appears that "normal" steps, like losing weight, eating well with a variety of fruit and vegetables and exercise seem the way forward. I'm glad it is nothing extreme or unusual. I am thinking to instigate an exercise routine to include walking (we do geocaching as a reason to go for a walk - try googling it), swimming, yoga/Tai Chi. I believe the variety will prove beneficial. I also saw on a programme recently the Japanese daily exercise routine that their elderly do in Parks ona daily basis is called Taisou and there are videos on Youtube, these aren't particularly strenuous but were designed to maintain suppleness in older people.
Hope this is helpful and good luck.