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You may not know it, but there are two types of vitamins: fat soluble vitamins which are vitamins A D E K and water soluble vitamins, which are all of the other vitamins. Your body needs both of these. Fat soluble vitamins dissolve in fat, and, as you can imagine, water soluble vitamins dissolve in water.

Read on about the sources and benefits of the A D E K group of fat soluble vitamins.

The A D E K fat soluble vitamin group can be stored for anywhere from a few days to up to six months. This means that too high an intake can lead to toxicity, so be careful. Conversely, storage can mean you don't need these vitamins every day.

Vitamin A Sources and Benefits Good for the eyes, and keeps the skin and mucous membranes moist. Anti-oxidant that fights tissue and cellular damage. Found in beef liver, egg yolk, cheddar cheese and fortified milk. Found as beta-carotene, which the body converts to A, in sweet potatoes, carrots, pumpkins, cantaloupe, apricots, (note the orange colors), broccoli, spinach and collard greens.

D2 and D3 Vitamin Benefits and Sources Both D2 and D3 Vitamins benefit and are needed by the human body. D2 and D3 Vitamin benefits include increased dieting success and better absorption and metabolism of calcium and phosphorus. Because of D3 vitamin benefits calcium absorption, it also benefits the bones and teeth, and helps prevent osteoporosis. There are also recent reports in vitamin D helping to prevent Parkinson's disease; D3 vitamin benefits the brain as well.The main source of De3 Vitamins is via exposure of the skin to the sun. Our skin engages in photosynthesis to produce D3 Vitamins. We should ideally get about 10-15 minutes of non-sunscreen protected sun exposure twice a week to obtain maximum D3 vitamin benefits. D2 is found in milk and other dairy products. Vitamin E Sources and Benefits

Youthful skin is a benefit of vitamin E. Recent reports also show that dementia may be prevented by vitamin E. Vitamin E, like vitamin A, is an anti-oxidant. Other benefits of vitamin E are to treat or prevent menstrual pain, low sperm count, eye irritation, cataracts, relief from muscle cramping, brain diseases, rheumatoid arthritis, asthma, cardiovascular disease and prostate and breast cancer. Vitamin E is found in high levels in cod liver oil, and also found in other oily fishes, such as salmon, mackerel and sardines. Non-fish sources include nuts such as almonds and sunflower seeds, safflower oil, sunflower oil and hazelnuts. In short, vitamin E is found in the oily fish and the oily nuts.

Vitamin K Benefits and Sources Vitamin K is excellent for the blood and bones, and is found in large amounts in the pancreas. Vitamin K deficiency shows some similarities to diabetes, according to Japanese researchers. The best sources include collard greens, swiss chard and spinach. The next best sources are broccolli, Brussels sprouts and cabbage, with olive oil, asparagus, okra, green beans and lentils next.