09/03/2026
Long story short: the group eating 4-6 prunes/day had no bone density loss over the full 12 months. Bonus: a separate analysis also found prunes preserved cortical bone structure and estimated tibial strength – so benefits were not limited to the hip.
Again, that’s prevented bone loss. Not “may support”. Prevented.
And guess what? More was not better. The group assigned to consume double the amount of prunes just had a higher dropout rate (GI tolerance, perhaps?).
Full disclosure: this study was funded by the California Prune Board (who knew there even was such a thing??)
To be perfectly clear, this is bone loss preventions, not reversal, and it’s not a replacement for medical treatment of osteoporosis. Also good to know -- a follow-up study found the bone-preserving benefits of prunes weren’t uniform – the gut microbiome seems to influence who responds optimally to this intervention.
So no, this isn't a magic bullet. It's not going to reverse osteoporosis you already have. But it’s real food, real benefit for your bones and (likely) your gut.