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. When taking zinc supplements, you should always remember that zinc can indeed interfere with your absorption of copper. The symptoms of vitamin deficiency will normally present themselves when the lack of vitamins is at an advanced level. Those who don t get enough of vitamins A, B1, and B2 for example, will always feel tired, along with a loss of appetite. Other symptoms include mental and emotional stress, chapped lips, and other annoying or painful habits. Funk was the first to discover vitamins as we know them today, although vitamin A was actually the first one discovered, hence the letter A in the title of the vitamin. You can find vitamin A in natural foods such as oranges and yellow fruits. It can also be found in vegetables as well, such as spinach and fats. You can find them in many different foods, or use vitamins and nutritional supplements that contain them. If you are looking to lose weight, nutritional supplements may come in handy. Anytime you decide to diet, you eat much less and may end up missing on foods that contain essential vitamins and minerals. Along with being found in supplement and vitamin form, you can find vitamin C in broccoli, peppers, oranges, lemon juice, mustard greens, cauliflower, papaya, and parsley. Research in the past has shown that there really aren t any advantages to taking excessive amounts of this vitamin. Even though you shouldn t take excessive amounts of vitamin C, you shouldn t have a deficiency in the vitamin either. Antioxidant Supplements A key ingredient to improving your lifestyle and living a healthy life is antioxidants. There are several antioxidant supplements out there that can help you live a healthy life, that are natural and won t cause you any damage. You can also eat different types of food that contain antioxidants as well, although supplements are the ideal way to get the right amounts of antioxidants.