May support a healthy immune system
One of the most striking advantages of rosehips is their high vitamin C content. While the precise quantity varies depending on the plant, rosehips have been demonstrated to have some of the highest vitamin C levels of any fruits or vegetables. Vitamin C performs numerous important roles in your immune system, including encouraging the creation of white blood cells called lymphocytes, which defend your body from infection, improving lymphocyte function, and aiding in the maintenance of your skin's protective barrier against outside pathogens.
Rosehips are strong in polyphenols, vitamins A and E, and vitamin C, all of which assist to improve and preserve your immune system. While animal studies show that supplementing with concentrated rosehip extract might improve immune function, human data is limited.