Calcium Consumption and Osteoporosis

Calcium Consumption and Osteoporosis


We know by now that we need to eat the right foods, need to work out, and do stuff that is healthy for us. Because maintaining good health does not happen by accident, it requires work and smart lifestyle choices. But sometimes when we wake up at 6 am to hit the gym before work or shunning the donuts in breakfast, it’s easy to lose sight of for what are we doing all these. So here are some top articles choices that can keep you motivated to lead a healthy lifestyle and keep diseases at bay.

Calcium Consumption and Osteoporosis

It is obvious that calcium consumption has strong relation with osteoporosis, as the main mineral in bones is calcium. Calcium deficiency due to inadequate intake (lower than recommended intake of dietary calcium) plays very important role in causation of osteoporosis. If there is any inadequacy of calcium intake during growth and development period, especially before puberty there is increased risk of development of osteoporosis in later adult life. Nutritional factors other than calcium also influence the peak bone mass, which may be lower than normal if there is deficiency of calories, protein, and other minerals.

Inadequate intake of dietary calcium during adult life causes relative secondary hyperparathyroidism (increased secretion of parathyroid hormones). Increased parathyroid hormones in blood leads to an increase in the rate of bone remodeling (demineralization of bones or calcium from bones is used to maintain blood calcium levels) to maintain normal serum calcium levels. Increased (or normal) parathyroid hormones in blood causes hydroxylation of vitamin-D in the kidney to produce more of 1,25-dihydroxyvitamin-D [1,25(OH)2D], as well as increased rate of absorption of calcium from gastrointestinal tract. In addition parathyroid hormones reduce excretion of calcium through kidneys by increasing reabsorption of calcium from kidneys.

The above mentioned role of parathyroid hormones are only compensatory mechanisms to maintain normal calcium level in blood and to use calcium in an economic way so that calcium is not wasted and used the best possible ways. But if dietary calcium intake is subnormal for long period of time, it has negative effects on bone mass and skeleton, because of increased remodeling rates and the ongoing imbalance between resorption and formation at remodeling sites cause increased loss of bone tissue.

It is recommended that the ideal intake of calcium should be 1000-1200 mg per day. But even most Americans consume on an average 600-800 mg per day, which is considered less than normal and inadequate to maintain calcium balance. Intake of less than 400 mg per day is associated with high incidence of osteoporosis and related problems.

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