Boron Daily Intake: 1.7-7.0 mg. (RDI not established) Dietary Source: Fruits, vegetables, nuts, wine, cider, beer Deficiency Symptoms: Depressed growth, osteporosis Importance: Proper mineral absorption Inhibits Absorption: Triglycerides Enhances Absorption: Calcium, magnesium, phosphorus, vitamin D Calcium Daily Intake: 500 - 1500 mg Dietary Source: Leafy green vegetables, milk, cheese, yogurt, shellfish, bone meal, dolomite, almonds, liver Deficiency Symptoms: Back and leg pains, heart palpitations, tetany, brittle bones, insomnia, tooth decay, muscle pains Importance: Necessary for development of healthy, strong bones and teeth; assists blood clotting, nerve transmission and tranquilization, heart rhythm Inhibits Absorption: Lack of hydrchloric acid, exercise, magnesium, D, stress Enhances Absorption: Magnesium, hydrochloric acid, A, D, C, F, iron Cesium Daily Intake: 0.1-17.5 mcg. (based on urinary elimination) Dietary Source: Foods grown in mineral-rich soil Deficiency Symptoms: Not determined Importance: Energy, brain function, cancer prevention Inhibits Absorption: Unknown Enhances Absorption: Unknown Chromium Daily Intake: 130 mcg. Dietary Source: Whole grain cereals, clams, corn oil, brewer's yeast Deficiency Symptoms: Depressed growth rate, atherosclerosis, intolerance in diabetics Importance: Increases effectiveness of insulin; stimulates enzymes in metabolism of energy; healthy blood circulatory system; synthesis of fatty acids, cholesterol and protein Inhibits Absorption: Unknown Enhances Absorption: Unknown Cobalt Daily Intake: 15-32 mcg. Dietary Source: Meats, leafy green vegetables, fruits, poultry, milk, clams, organ meats Deficiency Symptoms: Retarded growth rate, pernicious anemia Importance: Maintains red blood cells; functions as part of B-12; activates some enzymes in body Inhibits Absorption: Unknown Enhances Absorption: Copper, iron, zinc Copper Daily Intake: 1 mg -  2 mg Dietary Source: Soybeans, raisins, nuts, bone meal, organ meats, fish, legumes, molasses Deficiency Symptoms: Skin sores, impaired respiration, general weakness Importance: Part of many enzymes; works with vitamin C to form elastin; formation of red blood cells; color of hair and skin; good for bone formation Inhibits Absorption: High intakes of zinc Enhances Absorption: Zinc, cobalt, iron Iodine Daily Intake: 70 mcg - 150 mcg. Dietary Source: Mushrooms, iodized salt, fish, kelp tablets Deficiency Symptoms: Obesity, irritability, dry hair, nervousness, cold hands and feet Importance: Regulates energy production and rate of metabolism; enhances thyroid function; needed for prevention of goiter;  good for healthy hair, skin, nails, teeth Inhibits Absorption: Unknown Enhances Absorption: Unknown Iron Daily Intake: 10 mg - 18 mg. Dietary Source: Cherry juice, liver, eggs, fish, wheat germ, leafy green vegetables, shredded wheat, dried fruits, poultry Deficiency Symptoms: Weakness, difficulty in breathing, anemia, constipation, brittle nails Importance: Needed for formation of hemoglobin and myoglobin; promotes protein metabolism; stress and disease resistance; promotes growth; good for healthy teeth, skin, nails, bones Inhibits Absorption: Excessive zinc, coffee, excessive phosphorus Enhances Absorption: Copper, C, folic acid, B-12, calcium Lithium Daily Intake: 730 mcg.  Dietary Source: Foods grown in mineral-rich soil Deficiency Symptoms: Depressed growth, reduced fertility, reduced longetivity, depression Importance: Proper endocrine regulation, brain function, promoter of actin filament assembly (Actin is an integral component  of striated muscle cells.) Inhibits Absorption: Vanadium, cobalt, aluminum Enhances Absorption: Cobalt, B-12 Magnesium Daily Intake: 200 mg - 450 mg. Dietary Source: Molasses, whole grains, honey, nuts, kelp tablets, tuna, bran, green vegetables, bone meal, fish Deficiency Symptoms: Muscular excitability, confusion, nervousness, tremors Importance: Catalyst in the utilization of carbohydrate-fat-protein, phosphorus, calcium, possible potassium; good for energy; healthy maintenance of bones, arteries, heart, nerves, teeth Inhibits Absorption: Unknown Enhances Absorption: B-6, protein, calcium, C, D Manganese Daily Intake: 3.5 mg. Dietary Source: Whole grains, nuts, legumes, leafy green vegetables, bananas, celery, pineapple, liver, egg yolks Deficiency Symptoms: Hearing loss, ataxia, dizziness Importance: Enzyme activation, maintains sex hormone production; helps carbohydrate and fat production, tissue respiration; utilizes vitamin E; needed for normal skeletal development Inhibits Absorption: Excessive intake of phosphorus and calcium Enhances Absorption: Phosphorus, calcium, B-1, E Molybdenum Daily Intake: 160 mcg. Dietary Source: Milk, dairy products, legumes, organ meats, grains Deficiency Symptoms: Depressed growth, low appetite, impaired reproduction and fertility Importance: Proper mental function, proper amino acid metabolism Inhibits Absorption: Unknown Enhances Absorption: Sulfur-amino acids Nickel Daily Intake: 35-700 mcg./d. Dietary Source: Chocolate, nuts, dried beans, grains Deficiency Symptoms: Depressed growth, dermatitis Importance: Optimal growth, healthy skin, bone structure, enhances alkaline phosphate Inhibits Absorption: Iron, copper Enhances Absorption: Unknown Phosphorus Daily Intake: 0.8 mg - 1.3 g. Dietary Source: Legumes, milk & milk products, bone meal, nuts, yellow cheese, eggs, fish, grains, poultry Deficiency Symptoms: Pyorrhea, weight loss, appetite loss, irregular breathing, fatigue, nervousness, overweight Importance: Works with calcium to form bones, teeth; cell growth and repair; utilizes carbohydrate-fat-protein; heart muscle contraction; nerve activity Inhibits Absorption: Excessive intake of magnesium, white sugar, iron Enhances Absorption: Protein, manganese, iron, calcium, A, F, D Potassium Daily Intake: 3500 mg. Dietary Source: Meats, whole grains, legumes, dried fruits, dates, figs, peaches, nuts, seafood, bananas, apricots Deficiency Symptoms: Respiratory failure, cardiac arrest, poor reflexes, dry skin, nervousness, irregular heartbeat (slow), insomnia Importance: Controls activity of heart muscles, nervous system, kidneys; rapid growth; muscle contractions; nerve tranquilization Inhibits Absorption: Coffee, diuretics, sugar, stress, alcohol, cortisone, laxatives Enhances Absorption: B-6, sodium Selenium Daily Intake: 70 mcg. Dietary Source: Broccoli, onions, tuna, herring, bran and wheat germ, brewer's yeast, whole grain Deficiency Symptoms: Premature aging Importance: Works with vitamin E, preserves tissue elasticity; protein utilization Inhibits Absorption: Unknown Enhances Absorption: Vitamin E Silicon Daily Intake: 21-46 mg. (RDI not established) Dietary Source: Unrefined high-fiber grains, cereal products, root vegetables Deficiency Symptoms: Impaired formation of bone and cartilage (low collagen content) Importance: Essential for the repair, maintenance and formation of healthy connective tissue Inhibits Absorption: Unknown Enhances Absorption: Calcium Vanadium Daily Intake: 12.4-30 mcg. (RDI not established) Dietary Source: Shellfish, mushrooms, parsley, dill seed, black pepper Deficiency Symptoms: Impaired perinatal survival, depressed growth, enhanced hematocrit, plasma cholesterol, lipids and phospholipids Importance: Regulation of energy production, inhibition of cholesterol synthesis, enhances bone and tooth formation Inhibits Absorption: Unknown Enhances Absorption: Zinc, copper, iron Zinc Daily Intake: 8 mg - 15 mg. Dietary Source: Organ meats, brewer's yeast, fish, soybeans, liver, spinach, mushrooms, sunflower seeds Deficiency Symptoms: Sterility, delayed sexual maturity, loss of taste, poor appetite, fatigue, retarded growth Importance: Aids in digestion and metabolism of phosphorus and protein; component of insulin and male reproductive fluid; burn and wound healing process; prostate, carbohydrate digestion Inhibits Absorption: High intake of calcium, alcohol Enhances Absorption: Phosphorus, copper, calcium, A