Efficiency of calcium absorption decreases as intake increases, therefore it is better to take calcium in smaller doses throughout the day Net calcium absorption is as high as 60% in infants and young children, where as it decreases to 15-20% in adults and continue to decrease as people age Role of Calcium For growth and mineralisation of growing bones Plays a crucial role in various physiological functions like blood coagulation, neuromuscular transmission, muscle contraction etc.įood sources of Calcium Dairy products like milk, cheese and yoghurt- rich natural sources of calcium Vegetables like spinach, broccoli and cabbage contains calcium- but bioavailability poor Grains contains small amount of calciumĬalcium absorption About 30% of calcium in food is absorbed, but it varies with type of food consumed. Calcium and Vitamin D supplementation Dr Hasmukh Gala SevenHills HospitalĬalcium 99% of calcium present in bone and teeth Less than 1% of calcium present in blood, intracellular fluid & muscle Serum calcium is tightly regulated Body uses bone as a reservior for, and as a source of calcium to maintain constant concentrations of calcium in blood, muscle & intracellular fluidsĬalcium Metabolism Bone undergoes continuous remodeling with constant resorption & deposition of calcium The process of bone resorption and formation changes with age Formation > resorption in period of growth in children & adolescent Resorption > Formation in aged individual & post-menopausal women increasing risk of osteoporosis
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