An Essential Amino Acid
Lysine cannot be produced in the body and must be obtained from the diet. Deficiencies of lysine are rare, but do occur on occasion in individuals who do not get a balanced diet. Deficiencies have been linked to fatigue, lack of concentration, irritability, hair loss, anemia and reproductive problems. Even when lysine is not deficient, studies have found that its supplementation has beneficial effects on health.
Cold Sores, Bone Health and Other Benefits
Lysine weakens the virus that causes cold sores, reducing the recurrence and severity of cold sores and speeding up their healing. Lysine also has roles in bone health by helping with calcium absorption and collagen formation. Lysine helps to maintain levels of carnitine, an important nutrient for energy. Lysine
also helps maintain growth, body mass and nitrogen stores. As a factor in the production of hormones, enzymes and antibodies, it can help speed recovery times after injury or surgery.
Benefits Beyond Deficiency Prevention
Lysine's abilities to fight viruses, speed up recovery times and enhance bone health make it a valuable nutrient for health. Clinical trials have found that supplemental lysine is very safe and well tolerated.