Research has proven that taking more than 100 mg daily for an extended period can cause damage in the immune system. Older folks on the other hand, can benefit from taking zinc if they have a deficiency. The supplement can actually help older people bring their intake back up to the levels they should be at. A Lack Of Vitamins Everyone knows that the human body needs a certain amount of vitamins and minerals everyday to function properly and remain healthy. A well balanced diet can supply your body with the vitamins it needs, although problems and disorders can arise if your diet doesn t supply your body with the vitamins it needs. They are high in antioxidants, although those that are produced commercially generally come with chemicals and such that aren t so good for you. Canned fruits and vegetables come with high levels of sugars and calories, which antioxidant supplements don t have. The supplements offer you the levels you need, without any chemicals, sugars, or calories. Even though many researchers and doctors have linked vitamin E to preventing cancer, this hasn t been conclusively proven. There are many doctors that have said in the past that vitamin E can indeed prevent cancer, although no documentation or proof has been given to back up such statements. We all know that it is a very important vitamin, regardless. Vitamin Supplements Although getting the proper amount of vitamins and nutrients from natural food is important, it can be very hard to do. Those who can t get the minerals and such they need from food, turn to vitamins and supplements. With vitamin supplements being a big business, there are many manufacturers to choose from. Even though there are many vitamins that you can benefit from, one of the most important is B12, which can raise your energy levels and help with your immune system. Some other vitamins you ll need to include in your normal diet are vitamin A, C, D, and E. These vitamins are very important to your body, as they help with many different functions.