Rose hips are a great source of vitamin C; they contain 50% more vitamin C than oranges. Because of the high vitamin C content, they are an excellent immune system booster and are often used as a supplement to prevent or treat a cold. The fruit acids and pectin in rosehip tea is a mild diuretic and laxative. It is used to improve and relieve the symptoms of kidney disorders, or to help in the case of mild constipation. Rose hips have a high vitamin A content. Vitamin A is commonly referred to as the “skin vitamin”. It helps to regenerate skin cells, healing wounds and scars. It also helps to keep the skin elastic and nourished. This will not only prevent wrinkles but can actually help to minimize any that have already appeared. Vitamin A is also beneficial to the immune system. It can help to prevent infections from both bacteria and viruses. It helps the immune system to fight off any infections that do occur too. Many complementary medicine physicians use rose hips to treat wounds and inflammations. Research in Denmark and Germany used a rose hip remedy. The results showed that the remedy was actually very beneficial in treating rheumatoid arthritis. The group taking the remedy had an improvement in their mobility by 20 to 25%. They experienced less pain and a general overall improvement in mood and the way they felt. The studies showed significant improvement in individuals suffering from osteoarthritis as well, proving the anti-inflammatory properties. Because they contain a variety of antioxidants; carotenoids, flavonoids, polyphenols, leucoanthocyanins and catechins, rose hips are considered to be a good cancer preventative. These same antioxidants are also used to prevent cardiovascular disease.