Tea damage

Tea

Tea is made from the Camellia sinensis. Tea is the second most consumed drink in the world after water. The standard black or red tea is made by oxidizing and fermenting the leaves of the plant before drying. Green tea is produced by evaporation These leaves are dried without oxidation, so black or red tea differs from green tea in many properties. Black or red tea is the most productive in the world.

The history of the production of black or red tea is not entirely clear, but it is confirmed that black tea appeared in Chinese markets in the 16th century, where green tea was produced and drank only in China, and the consumption of green tea is still greater than red or black In China, black tea then spread to the rest of the world.

Tea is a safe drink for the majority of people as long as it is consumed in moderate amounts, but if taken in large quantities, equivalent to five cups of black tea a day, it becomes unsafe, and produces side effects because of its content of caffeine, and these symptoms range from Between headache and sweating, headache, tension, stomach ache, insomnia, diarrhea, vomiting, irregular heartbeat, irritability, dizziness, tinnitus, dizziness, convulsions, confusion, confusion, rapid breathing, If you drink black tea in very large quantities, containing 10 grams of caffeine, can lead to very serious effects may lead to death, the cup contains about 67 mg of caffeine.

Warnings and hedges for tea

children : Tea in normal quantities safe for children, but should not be multiplied.
Pregnancy and lactation : Drinking tea during pregnancy and lactation in small amounts is safe, but you should not drink more than three cups a day, as this amount gives about 200 mg of caffeine, not exceeding this limit safe, because eating more caffeine increases the risk of abortion, Sudden infant death, withdrawal symptoms of caffeine at birth, low birth weight and other negative effects.
Anemia : Drinking tea can cause anemia worse for people with iron deficiency anemia, due to the role of tea in reducing the ability of the body to absorb iron and benefit from it.
Anxiety disorders : Caffeine can cause poor condition of people with these disorders.
Bleeding Disorders : Caffeine can cause slow blood clotting, so be careful when taking sources such as tea and coffee in people with bleeding disorders.
Diabetes : Caffeine can affect the level of sugar in the blood, so you should monitor blood sugar and take caution when you eat caffeine sources in people with diabetes.
Spasmodic seizures : Caffeine can increase the incidence of seizures and reduce the work and efficiency of drugs used to treat this situation, so those who have these seizures should not eat large amounts of caffeine.
diarrhea : Caffeine in large quantities can cause an increase in poor diarrhea.
Glaucoma : Caffeine-containing tea increases the pressure within the eye within 30 minutes of drinking, and continues for 90 minutes.
Take medications : Some drugs prolong the duration of caffeine in the blood, so consult with your doctor to see if the drug has this effect.
Conditions that become worse due to estrogen , Such as breast cancer, uterine cancer, ovarian cancer, migraine endometrial disease, and uterine fibers, where tea can act similar to estrogen.
Hypertension : Caffeine found in tea raises blood pressure in people with high, but this effect is temporary and does not happen in people who used to drink tea and coffee regularly.
IBS : When taking caffeine in large quantities it increases the diarrhea, and can increase symptoms of irritable bowel syndrome worse.
Osteoporosis : Caffeine-containing tea increases the amount of calcium the body borrows with urine, so no more than two to three cups of tea per day. Calcium thrown in the urine can be replaced with more calcium than supplements.
Older women With genetic problems in the representation of vitamin D, they should be careful about caffeine sources.
Bladder hyperactivity disorder : Caffeine increases the risk of bladder hyperactivity and causes an increase in the symptoms of this disorder in those infected with it, so be careful to take the sources of caffeine in this case.

Benefits of Tea

Caffeine-containing beverages such as tea increase alertness, mindfulness, even sleep deprivation, and contain a small amount of theophylline (theophylline). Caffeine and theophylline increase the rate Heartbeat and body activation.
Tea is a source of polyphenols that act as antioxidants that protect DNA from oxidative damage and its health consequences.
Some studies suggest that taking tea reduces the risk of atherosclerosis, especially in women.
Caffeine-containing beverages can help raise blood pressure in people with stress after eating or standing.
It was found that women taking tea reduces the chance of kidney stones by 8%.
Studies have found that drinking tea reduces the risk of heart attacks, and found that people who used to drink tea for at least a year before having a heart attack are less likely to die in this crisis than those who drink tea.
Improvement of osteoporosis, where studies found that older women who drink black tea have stronger bones, and found that eating black tea reduces the risk of fractures, especially pelvic fracture in men and women, and some preliminary studies indicate the ability of tea in Reduce the risk of osteoporosis.
The antioxidants found in tea (polyphenols, specifically catechins) reduce the risk of certain cancers. Several studies have found that regular tea, both green and black, reduces the risk of women developing uterine cancer. The study suggests that black and green tea may reduce the risk of lung, bladder, kidney, and lung cancer. I took black tea down the risk of oral cancer, pancreatitis, and prostate.
Caffeine-containing beverages can reduce the risk of Parkinson’s disease.
Continuous intake of tea can reduce the risk of diabetes and high cholesterol.
Flavonoids found in tea can reduce the risk of stroke.
Some preliminary studies point to the ability of black tea to prevent tooth decay, but this effect needs further research to confirm it.
Tea can be useful for diarrhea, vomiting and headache, but these effects need further research.