Barley Grass Juice Powder By The Vitamin Shoppe Overview & Drug Interactions

Calcium is a vital nutrient found in various foods such as dairy products, certain vegetables, and many fortified items. Over 99% of the body's calcium is stored in the bones and teeth, predominantly as hydroxyapatite. The remaining calcium circulates in the blood, extracellular fluid, muscles, and other tissues, where it is essential for processes like nerve signaling, muscle contraction, vascular activities, glandular secretion, and maintaining cell membrane and capillary permeability. It also plays critical roles in enzyme reactions, respiration, kidney function, and blood clotting, and is involved in neurotransmitter and hormone release, amino acid uptake, vitamin B12 absorption, and gastrin secretion. Calcium balance changes with age: it is positive during periods of growth, stable in adulthood, and tends to become negative in older age. Calcium loss occurs through feces, urine, sweat, and shedding skin cells. In women, reduced estrogen levels decrease calcium absorption and retention, increase bone turnover, and lead to lower bone mass. Calcium supplements come in various forms, including citrate and carbonate, which differ mainly in their calcium content and absorption rates. Calcium citrate is easily absorbed and can be taken without food, making it suitable for older adults or those with low stomach acid. In contrast, calcium carbonate, which contains a higher percentage of calcium, is best absorbed when taken with meals.

Barley, a widely used grain renowned for its high fiber content, serves both as a staple food and an ingredient in brewing various types of alcoholic beverages. Research suggests that barley's dietary fiber may reduce the risk of coronary heart disease. Studies indicate that daily consumption of 3-12 grams of barley can help lower total cholesterol and LDL cholesterol levels in adults with hypercholesterolemia. A key component of barley is beta-glucans, a soluble fiber known for its health benefits. Barley also contains tocopherols and tocotrienols, forms of vitamin E with antioxidant properties that further enhance its nutritional value. Moreover, barley contains hordenine and lunasin, compounds under study for their potential health-promoting effects.