We have to be careful about generalizing about the Inuit, however. They led a generally more physically gruelling existence than many other hunter/gatherers: kayaking tends to compress vertebrae, running and jumping and generally hunting on frozen tundra or ice tends to be harder on the legs, hips, and back, falls tend to be more damaging, and so on. A lot of the increase of compression fractures and osteoarthritis may be due to a harder lifestyle, not necessarily the extremes of the diet. Or of course it could be the diet, or could be some of both. But it's not safe to assume, and I don't think anyone's done the research to definitively answer that question.