A recent study demonstrated that fish oil supplementation (equal to about 3,000 mg twice daily of a standard fish oil capsule) combined with jogging or brisk walking (30 minutes 3-4 times per week) help to improve bone calcium density and strength better than either alone.
The underlying mechanism involved here is reversal of inflammation which both fish oil and exercise improve.
As I have said many times before, a reduction in carbohydrate intake to less than 100 grams per day has a dramatic impact on reversing the abnormal systemic inflammation associated with so many modern illnesses (diabetes, high blood pressure, gout, heart disease and Alzheimer’s Disease).
Although no studiess have looked at the impact of low carbohydrate diet on Osteoporosis, I would expect to see much of the same impact as the above study. I recommend doing all 3.