Garlic
Health Benefits:-
Garlic's health benefits  have long been known
 (1). Garlic has long been considered a herbal "wonder drug", with a reputation in folklore for preventing everything from the common cold and flu to the Plague. It has been used extensively in herbal medicine. Raw garlic is used by some to treat the symptoms of acne and there is some evidence that it can assist in managing high cholesterol levels. It can even be effective as a natural mosquito repellent.
Some people prefer to take garlic supplements. These pills and capsules have the advantage of avoiding garlic breath.
Modern science has shown that garlic is a powerful natural antibiotic, albeit broad-spectrum rather than targeted. The body does not appear to build up resistance to the garlic, so its positive health benefits continue over time.
A team of Israeli scientists recently used this chemical to successfully kill cancer cells as well as malignant tumors in mice. Allicin is not present in an unbroken clove of garlic. It only gets released when the clove is crushed, so when using garlic in cooking, make sure you crush it and use it. Don't add the entire unbroken clove in your food, as though this will give you the flavour of garlic, The clove needs to be damaged, so it is more effective crushed than cut. When crushed garlic is added to a dish, any parasites, bacteria or other microbes get killed even before the temperature kills them, so if you are worried about eating outside food - the safest option would be to order food with a strong garlic flavour.Garlic, as we all know or should be knowing, is a natural antiseptic, and eating a clove of garlic a day also helps ward off most infections.

Side-Effects
Raw garlic is very strong, so eating too much could produce problems, for example irritation of or even damage to the digestive tract.
There are a few people who are allergic to garlic. Symptoms of garlic allergy include skin rash, temperature and headaches. Also, garlic could potentially disrupt anti-coagulants, so it's best avoided before surgery. As with any medicine, always check with your doctor first and tell your doctor if you are using it.