4. Improve Oral Health
Onions are often used to prevent tooth decay and oral infections. Chew raw onion for 2 to 3 minutes and the natural antibacterial properties in onions will kill any germs in your mouth and throat.
5. Boost Immunity
The phytochemicals in onions supercharge your immune system against toxins and various foreign bodies that can lead to disease and illness (4).
6. Treat Respiratory Issues
Raw onion mixed with honey and brown sugar and set overnight, will form a powerful syrup. After 24 hours, remove the onion and you are left with a powerful cough syrup that will help reduce phlegm and congestion.
7. Stop Nose bleeds
Cut a slice of raw onion and put directly under your nose—the acrid fumes from the onion will help to clot the blood. And thus stop the bleeding.
You can also soak cotton balls in onion juice and place one in your nostrils for 3-4 minutes and the bleeding should stop.
8. Improve Cardiovascular Health
Quercetin in onions has been shown in studies to helps to eliminate free radicals, inhibit low-density lipoprotein oxidation—a significant reaction in atherosclerosis (hardening of the arteries) and coronary heart disease.
It also helps to protect and regenerate vitamin E—a powerful antioxidant known to be beneficial for heart health.
9. Detoxify Your Body
The high levels of sulfur-containing amino acids in onions have a powerful detoxifying effect on the body, according to Dr. James J. Slaga, author of The Detox Revolution.
Studies show that these compounds, called organosulfides, form glutathione, a powerful antioxidant your liver uses for detoxification purposes.