Supplements that contain phytonutrients do have advantages when compared to certain fruits, such as carrots - which can elevate your blood sugar level to a very high level. Phytonutrients found in supplements are the extract of pigments where nutrients are concentrated, meaning that they draw the best from antioxidant foods, leaving the calories and sugar behind. With the most important times of your life, such as childhood, breast feeding, or pregnancy, getting the right amounts of calcium is very important. For children, calcium helps with the growth of teeth and bones, and it prevents blood clots. With adults, calcium helps to prevent osteoporosis. If you are looking to take, or currently taking calcium supplements, you should take them either before or after your meal, with a large glass of liquid, preferably water. There are other causes as well, although the above are the most common. Problems with the digestive tract can be improved quite a bit if you slowly increase your intake of nutrients. A diet that is high in organic matter is the preferred way to improve your digestion, although you may need to use supplements as well. We all know that it is a very important vitamin, regardless. There are studies however, that have proven vitamin E to be very effective in protecting the skin against UV rays. Vitamin E has been shown on numerous occasions to shield the skin from the harmful rays of the sun, which as we all know, can lead to skin cancer. Folic acid is a B vitamin that has been proven to increase energy levels. Even though you can look for vitamins that provide energy, it would be in your best interest to find those that can be effective with fighting fatigue as well. There are vitamins, nutrients, and supplements that are great for fighting fatigue and helping the body stay alert. All About Vitamin A Vitamin A was first discovered back in 1912, by a Polish biochemist named Casimir Funk. He came up with the word vitamine, which was later given the name vitamin. 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.