Yes, it is true. There is a book, available at supermarket checkouts, no less (!!!GGG), that called Garlic and Vinegar, which describes its medicinal properties in detail. Garlic also helps clear out the blood stream and eliminate fats from the body. I try to eat some every day, and use it a lot in cooking. I also give it to my pets--helps to control fleas and worms. A very useful item!