8 Signs in The Body Which Reveal That You Are Not Healthy1. Premature greyingSource: https://www.flickr.com/photos/zenia/526324603/A few stray grey hairs are normal, but if you are under forty and half your hair is grey, it may be a sign of diabetes. This is especially true if you have a family history of diabetes.Pages: 1 2 3 4 5 6 7 8