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What You Need To Know About Vitamins
Vitamins are crucial for building tissue, regulating growth and extracting energy from the foods we eat. Our bodies use vitamins in conjunction with the enzymes they produce so certain chemical reactions occur at the right time. Vitamins are also required to produce hormones, manufacture blood cells and other compounds necessary for optimum health.
Some vitamins, such as vitamin D, are produced by the body. Vitamin D is produced when the skin is exposed to sunlight. Unless they are produced by the body, vitamins must be included as a part of the diet. The B vitamins and vitamin C are water soluble vitamins. Water soluble vitamins are absorbed directly into the blood stream. After they are used the waste is excreted in urine or sweat.Vitamins A, D, E and K are fat soluble vitamins. These vitamins are absorbed through the intestines and then stored by the body until needed.
| Vitamin | Significant Sources |
Chief Functions |
Signs of Deficiency |
Signs of Excess |
| Fat Soluble Vitamin A |
Fortified milk, cheese, cream, butter, eggs, liver, dark leafy greens, broccoli, deep orange fruits and vegetables |
Antioxidant, needed for visual acuity, health of the cornea, epithelial cells, mucous membranes, skin health, bone and tooth growth, hormone production and regulation, immunity |
Anemia, night blindness, painful joints, cracks in teeth, diarrhea, depression, frequent infections, keratinization, corneal degeneration, kidney stones, rashes |
Bone pain, nosebleeds, loss of hair, rashes, growth retardation, dry skin, loss of appetite, irritability, fatigue, pain in calves, blurred vision, overreactive immune system, vomiting, diarrhea, abdominal cramps and pain |
| Vitamin D | Fortified milk, eggs, liver, exposure to sunlight |
Promotes the absorption of calcium and phosphorous |
Malformed teeth, abnormal growth, misshapen bones, soft bones, joint pain |
Excessive thirst, headaches, raised blood calcium, irritability, loss of appetite, weakness, nausea, kidney stones, stones in the arteries mental and physical retardation |
| Vitamin E | Green leafy vegetables, wheat germ, whole grain products, nuts, seeds |
Antioxidant, needed for stabilization of cell membranes, regulation of oxidation reactions |
Fibrocystic breast disease, red blood cell breakage, anemia, leg, cramps, difficulty walking, muscle degeneration |
Enhances the effects of anticlotting medicine, general discomfort |
| Vitamin K | Liver, green leafy vegetables, cabbage and similar vegetables, milk |
Needed for synthesis of blood clotting proteins and a blood protein that helps regulate blood calcium |
Hemorrhage | Interference with blood clotting medicine, jaundice |
| Water Soluble Vitamin B-6 |
Green leafy vegetables, meats, fish, shellfish, legumes, poultry, whole grains, ,fruits |
Part of a coenzyme necessary in metabolizing fatty acids and amino acids, helps build red blood cells |
Anemia, convulsions, muscle twitching, irritability, abnormal brain wave patterns |
Fatigue, impaired memory, depression, headaches, restlessness, weakness, numbness, loss of reflexes, nerve damage |
| Vitamin B-12 | Meat, fish, poultry, eggs, milk, cheese |
Part of a coenzyme necessary for new cell generation, helps maintain nerve cells |
Smooth tongue, hypersensitivity, fatigue, anemia, nervous system degeneration to the point of paralysis |
No known symptoms |
| Vitamin C | Citrus fruits, cabbage and similar vegetables, dark green vegetables, cantaloupe, strawberries, peppers, mangoes, papayas, potatoes, lettuce |
Antioxidant, necessary for collagen synthesis, amino acid metabolism, aids in resistance to infection, aids iron absorption |
Anemia, failure of wound healing, blotchy bruises, pinpoint hemorrhages, frequent infections, rough skin, joint pain, bone fragility, depression, hysteria, loosened teeth, muscle degeneration and pain, bleeding gums |
Nausea, aggravation of gout symptoms, diarrhea, abdominal cramps, excessive urination, insomnia, headache |
| Thiamin | Pork, bacon, ham, legumes, nuts, whole grains |
Part of a coenzyme necessary for energy metabolism |
Edema, abnormal heart rhythms, heart failure, enlarged heart, nervous and muscular system degeneration, pain, low morale, wasting, weakness, difficulty walking, loss of reflexes, mental confusion |
No known symptoms |
| Riboflavin | Green leafy vegetables, meat, cheese, milk, yogurt, cottage cheese, whole grain breads and cereals |
Part of a coenzyme necessary for energy metabolism, vision and skin health |
skin rash, reddening of cornea, cracks at corners of the mouth, hypersensitivity to light, magenta tongue |
No known symptoms |
| Niacin | Eggs, meat, poultry, milk, fish, whole grain breads and cereals |
Part of a coenzyme necessary for energy metabolism, supports skin health, nervous system and digestive health |
Black smooth tongue, flaky skin rash on areas exposed to sunlight, mental confusion, diarrhea, loss of appetite, irritability |
Heartburn, low blood pressure, abnormal liver function, fainting, dizziness, vomiting, ulcer irritation, diarrhea, painful flush and rash, sweating |
| Folate | Green leafy vegetables, seeds, liver, legumes, whole grain breads and cereals, pasta |
Part of a coenzyme necessary for new cell generation |
Fainting, diarrhea, mental confusion, depression, smooth red tongue, anemia, heartburn, constipation, frequent infections |
Masks vitamin B-12 deficiency |
| Pantothenic Acid |
Found in many foods |
Part of a coenzyme necessary for energy metabolism |
Fatigue, vomiting, intestinal distress, insomnia |
Water retention (rare) |
| Biotin | Found in many foods |
Used in energy metabolism, fat synthesis, amino acid synthesis and glycogen synthesis |
Hair loss, rash, fatigue, abnormal heart action, loss of appetite, nausea, depression, muscle weakness |
No known symptoms |


