Drinking coffee does not cause osteoporosis

The incidence and indirect mortality of osteoporosis are very high. General types of osteoporosis have clinical manifestations in middle age, and women have a higher incidence than men, sometimes referred to as "postmenopausal osteoporosis".

Osteoporosis is usually asymptomatic unless there is a fracture. It can be characterized by varying degrees of back pain or spontaneous fractures and spinal compression fractures, often accompanied by loss of height. Osteoporosis focuses on prevention, starting intervention in young or middle age, emphasizing regular exercise, quitting smoking or drinking, and having enough calcium in your diet. Recreational activities in adolescents and early adulthood are helpful in preventing hip fractures. Postmenopausal women should eat 1.0-1.5 grams of calcium a day. Weight-bearing exercise can increase bone mass. Bone has metabolic activity in human life. After the bone development is complete, the bone continues to be remodeled at a rate of about 10% a year. Some scientific articles believe that caffeine increases the loss of calcium in urine. In fact, the human body contains about 1100 grams of calcium, 99% of which is deposited in bones and teeth. With the increase of urine loss, it is almost impossible to reduce the amount of bone calcium. For those who already have osteoporosis and have a negative calcium balance, simply adding milk to the coffee can eliminate the risk and prevent the problem.

Some observational studies have shown that consumption of caffeinated drinks is associated with reduced bone mass and an increased risk of fracture. Some data have shown that increased caffeinated coffee intake over a lifetime is graded associated with decreased bone mineral density (BMD) of the hip and spine, and this correlation is not associated with age, obesity, multiparity, years of menopause, smoking, alcohol consumption, use of estrogens, thiazides and calcium supplements. However, in most women who drink at least one cup of milk a day, their bone mineral density does not change when they drink coffee for the rest of their lives. Human physiology and control balance studies have shown that caffeine itself has a weak inhibitory effect on intestinal calcium absorption, but has no effect on 24-hour urinary calcium excretion.

Low calcium intake is associated with easy fracture. Caffeine has little adverse effect on calcium absorption, and drinking 1-2 spoonfuls of milk is enough to make up for it. All the evidence shows that moderate coffee consumption does not change calcium digestion and absorption, increase urinary calcium excretion, and does not lose it from stools. If you eat more than 1 liter of coffee a day, urinary calcium excretion and calcium loss will increase, but adding milk to coffee can solve the problem.

Moderate caffeine intake has no direct effect on bone metabolism. Moderate caffeine intake does not cause osteoporosis in the elderly, nor does it increase the risk of fracture. Some studies have shown that the risk of hip fracture is moderately associated with high caffeine intake (more than 4 cups per day), while others suggest that intake of calcium, milk, phosphorus, protein, vitamin C and caffeine are not associated with hip fractures. These studies also suggest that exercise in childhood and adolescence is beneficial to the prevention of such fractures. Menopause is associated with reduced bone mineral density and osteoporosis, which can be aggravated by smoking, which is caused by reduced calcium absorption. Moderate caffeine intake has no effect, but older people and postmenopausal women must avoid consuming large amounts of caffeine. Caffeine of more than 500 milligrams per day can cause osteoporosis, but only for women who eat less than 800 milligrams of calcium a day. Lack of milk intake in the elderly is associated with osteoporosis, which can be prevented by adding 2 to 3 cups of coffee and milk a day.

The statement that drinking coffee every day is a risk factor for osteoporosis must be corrected to "lifelong caffeinated coffee consumption is significantly associated with reduced bone mineral density, but only for women between the ages of 20 and 50 who drink less than one cup of milk a day." When women consumed up to 1 cup of milk a day, those who drank the most coffee and those who drank the least had the same bone mineral density at the lumbar vertebrae and hips. Caffeine or coffee-induced calcium loss and bone loss were not significant for those with adequate calcium intake.

Insufficient calcium intake is the main reason for the prevalence of osteoporosis. Metabolic studies have found that caffeine has no significant effect on calcium balance, which is based on a daily intake of at least 800 milligrams of calcium. Therefore, the solution to prevent osteoporosis is not to reduce coffee intake, but to supplement adequate calcium intake. Since childhood, coffee with milk has been a more enjoyable and healthier drink than other artificially produced caffeinated drinks such as cola. Drinking coffee every day can improve mood and concentration, coupled with proper physical activity, can prevent osteoporosis.

On the other hand, regular consumption of carbonated cola drinks may increase the risk of low bone mineral density in women, according to a study published in November in the American Journal of Clinical Nutrition. Compared with those who drank cola less than once a month, the bone mineral density of femur and tibia of those who drank cola every day was 3.7% lower on average, and the bone mineral density of triangle was 5.4% lower on average. These results are similar to those of drinking coke, but not entirely the same as those of decaffeinated cola. There was no significant relationship between the intake of non-cola carbonated drinks and bone mineral density. Although the daily total phosphorus intake of cola drinkers was not significantly higher than that of non-cola drinkers, the ratio of calcium to phosphorus was lower.