Long before commercial cold treatments, herbalists used a syrup made from the juice of one onion, mixed with honey, to alleviate congestion.
Onion is also excellent for indigestion.
A roasted Onion can be used as a poultice for earaches. Onion is believed to be a natural source of energy, and some people swear that an Onion a day can prevent hair loss. Applied directly to the skin, Onion has special healing properties. Salted Onions are useful for troublesome warts. Onion juice rubbed between the toes 2 to 3 times daily can cure athlete's foot.