Old people drinking strong tea is easy to hurt the kidneys and hurt the bones
Drinking tea in moderation is good for health every day, but drinking tea often may damage kidney function and cause osteoporosis. The potential harm cannot be ignored.
Today, there is a disease called “tea-type fluorosis”, which refers to chronic fluorosis caused by repeated intake of excessive amounts of high-flavor tea or tea products.
Fluorosis can lead to fatigue, loss of appetite, dizziness, headache, memory loss and other symptoms.
Strong tea contains high levels of fluoride, and drinking strong tea can damage the kidneys.
Because the kidney is the main excretion organ of fluoride, when the excess excess fluoride in the body exceeds the excretion capacity of the kidney, the fluoride will accumulate in the body, and the fluoride content of the kidney will increase significantly.
Experiments have shown that excess fluoride in the kidney can cause damage to the renal cortex and medullary tubules of animals.
Too many people always think that drinking strong tea can hangover.
In fact, strong tea not only does not hangover, but also hurts the kidneys.
The reason is that theophylline in strong tea can rapidly produce diuretic effect through the kidneys, so that the already oxidized acetaldehyde enters the kidney prematurely.
Acetaldehyde is toxic to the kidneys, which can damage glomerular and tubular cells and cause damage to kidney function.
Therefore, drinking strong tea and hangover is not enough.
Drinking more tea is easy to hurt.
A foreign study on the drinking habits and fracture risk of 3,170 elderly people over 50 years old in the United States showed that people who drink 5 cups of strong tea every day have a 70% higher risk of fracture than those who do not drink strong tea.
According to a survey of 4,659 Inner Mongolian herders by domestic epidemiologists, because they drink tea for a long time, the degree of osteoporosis is 17% higher than that of Han people who do not drink strong tea.
Because the content of caffeine in concentrated tea is reduced, and caffeine can inhibit the absorption of calcium in the duodenum, and accelerate the discharge of calcium in the urine.
Due to the dual effects of inhibiting absorption and accelerating excretion, calcium deficiency in the body is easy to induce calcium loss in the bone, which may cause osteoporosis over time.
Therefore, each time tea should not exceed 5 grams, no more than two teas a day.
In addition, brick tea, Pu’er tea fluorine-containing carboxylic acid, should not drink too much.