Aside from injuries, chronic nosebleed can be caused by a Vitamin C deficiency.
Vitamin C is found in its natural state in most fruit, especially citrus fruit, kiwis, melon and berries, as well as in many vegetables: tomatoes, cabbage, green leafy vegetables, green peppers, Brussel sprouts, broccoli and cauliflower.
As Vitamin C cannot be stored by your body, it is essential to make sure that you are getting enough on a daily basis.
It should also be noted that Vitamin C is somewhat fragile, that is to say, it is easily destroyed by cooking.
It is therefore recommended that, where possible, to eat vegetables raw, not forgetting to wash them well.
Capillary permeability is a factor in some cases of nosebleed. A lack of Vitamin F affects permeability and can cause problems. Your main natural source of Vitamin F is extra virgin, first cold-pressed oils.