Osteoarthritis is the progressive breakdown of cartilage that cushions the ends of bones in joints. Traditionally blamed on age and wear-and-tear, emerging evidence points to diet as a major culprit—especially saturated fats.
Researchers at Queensland University of Technology in Australia report that saturated fatty acids, comprising about 20% of the Western diet alongside simple carbohydrates, weaken joint cartilage, particularly in hips and knees.
In their study, published April 18, 2017, in the journal Scientific Reports, the team tested saturated fats from butter, animal fats, palm oil, and simple carbs on rats. They observed changes in the bone beneath the cartilage, diminishing its shock-absorbing role and triggering pain. "Our results imply it's not just wear-and-tear, but diet that drives osteoarthritis onset," explained Professor Xiao from the university's Institute of Health and Biomedical Innovation. Notably, replacing animal fats with lauric acid—the primary saturated fat in coconut oil—led to much milder cartilage degradation.
To support joint health and potentially lower osteoarthritis risk, prioritize reducing saturated fats from animal sources and palm oil while considering alternatives like coconut oil.
