Fat which can come from mono and poly saturated food sources rather than animal fats. Since fat contains more than double the number of calories in food, this should be taken in small quantities to gain or lose weight.
Another way to stay healthy is to give up some vices. Most people smoke and drink. Smoking has been proven to cause lung cancer and other diseases as well complications for women giving birth. Excessive drinking has also shown to do the same. For people who don’t smoke, it is best to stay away from people who do since studies have shown that nonsmokers are also at risk of developing cancer due to secondary smoke inhalation.