If you are prone to nose bleeds, there are a few environmental symptoms that could be causing them, such as low humidity levels, vitamin K deficiencies, allergies, medications, high altitudes, or excessive heat.

The first step to preventing nosebleeds if you are susceptible is to check the environment of your home and office. Check the humidity in the rooms where you normally stay, and if it is very low, raise it a bit. Also, using heaters in the home produce a very dry heat, which can trigger nosebleeds. Keep the heat down.

To keep the nose from drying out, use a saline nasal spray or while showering, be sure to breath in deeply to inhale the moisture into your nose.

There are also medications, spices, and vitamins known to trigger nosebleeds, those that do are often blood thinning agents. Medications like these include aspirin, ginger, ginseng, garlic, and vitamin E.

Also, avoid spicy foods, friend foods, and foods which you may be potentially allergic to, such as milk, and wheat based products.

As a daily precaution, you can place vitamin E or zinc oxide drops in your nostrils if you experience chronic nosebleeds.

Finally eating fruit on a daily basis could help prevent nosebleeds. Citrus fruits in particular contain bioflavonoid, which can help thicken the blood and preventing the nose from bleeding.

And on a final note, you should always consult your doctor if your nose bleeds consistently, or if you are unable to stop it from bleeding. You should also contact your doctor if you begin to bleed from your tear ducts, the nosebleed is the result of an injury, or if you have blood running down from both nostrils.