What puts me at greater risk of osteoarthritis?

Risks of OA: Aging is the most common predicting factor for the development of osteoarthrits. It may be a natural process resulting from wear and tear of the joints as we get older, however it may be faster in some people following certain accidents, repeated injuries, menopause, illnesses, certain activities, or unknown reasons. Obesity, tobacco smoking, and sedentary life style can also increase the risk.

Osteoarthritis Risks: Originally osteoarthritis was believed to be a purely degenerative disease that happened over time. More recent research has shown it may have an inflammatory or autoimmune component that is not well understood. Some theorize certain vitamin or mineral deficiencies may contribute but this is not been definitively proven. Supplements with anti-inflammatory profiles and vitamin d & c may help.

Almost anything: Its a normal part of aging however if you are a high level athlete you may have higher incidence of this as you age.