Two new studies have found that the active ingredient in rose hips may help protect and possibly rebuild joint tissue damaged by osteoarthritis (OA) and rheumatoid arthritis (RA). Scientists say rose hips contain a protein called GOPO(R), which has been found to protect cartilage and possibly stimulate its regeneration. GOPO(R) has also been shown to improve mood, increase energy, and boost sleep quality in people who suffer from OA and RA. Experts say GOPO(R) from rose hips may one day prove...