Advantages and disadvantages of coffee effects of caffeine on human health

So far, no conclusive evidence has been found that drinking coffee in moderation is harmful to human health. For healthy people, the biggest disadvantage of saying caffeine is that it may make people like to drink it constantly. After absorbing caffeine, after 12 to 24 hours no longer absorb caffeine, there will be some tiredness or inability to concentrate completely, and so on.

Drinking a moderate amount of coffee, that is, only two to four cups a day, will do no harm to your health. Some studies have found that drinking too much coffee can lead to bone loss. People with high blood pressure had a significant increase in blood pressure after drinking two or three cups of coffee a day.

The chemical name of caffeine is trimethylxanthine, which is found in more than 60 kinds of plant products. Caffeine is mild in nature and can stimulate the sympathetic nervous system, thus producing refreshing and fatigue-relieving effects. Caffeine can dilate the arteries leading to the heart and increase blood flow. it can also help the arteries in the head contract, helping to relieve migraines.

Coffee contains more than 500 chemicals, and caffeine is just one of them. It is said that coffee may have some adverse side effects, but at least one has been shown to be unrelated to caffeine and high serum cholesterol. The researchers say it is not caffeine that causes the increase in serum cholesterol, but coffee bean oil. However, the oil is not difficult to remove, as long as a piece of paper is used to make coffee, the oil can be filtered out.

People who drink a lot of caffeinated drinks every day are mostly people who work too much, work too hard and are in poor health. People who drink a lot of coffee also tend to have the habit of smoking, and smoking has been proved to be associated with many serious diseases, not because of coffee consumption.

Caffeine and low caffeine

The most remarkable thing about caffeine is that the taste of coffee has nothing to do with how much caffeine it contains. Caffeine itself has a slight bitter taste, and its concentration basically comes from the degree of roasting (the deeper it is, the thicker it is). The concentration of coffee is formed by the ratio of coffee to water in the process of brewing.

Bullet an average 142g cup of coffee contains 60-180mg (mg) of caffeine, depending on the concentration of coffee and the type of coffee used when mixing.

Bullet A cup of ordinary 42g (g) Espresso contains 90-120mg (mg) of caffeine. The amount of caffeine also depends on the concentration of coffee and the type of coffee used when mixing.

Bullet roasting process has little effect on caffeine. Caffeine above 77 degrees Celsius can be quickly dissolved in water, so it has been completely dissolved with coffee during brewing.

Bullet different types of coffee trees also contain different amounts of caffeine. Arabica coffee contains about 1% per cent caffeine, while robusta coffee contains about 2% per cent caffeine.

Whether caffeine has an effect on health is a topic of great concern to many people. So far, no conclusive evidence has been found that drinking coffee is harmful to human health.

Many studies have shown that coffee is actually good for the human body in many ways. For example, coffee can stimulate athletes to create better results, and the moderate stimulation caused by coffee is beneficial to many daily activities, such as relieving work stress, refreshing effect, and so on. Drinking a moderate amount of coffee will not affect human health, but it is a good drink.

Low caffeine

All ways to remove caffeine are to increase the moisture content of green coffee beans (unroasted coffee beans), making it easy to remove caffeine. The caffeine is then extracted with a solvent, dried in the sun, and shipped to the roaster.

The solvents used to remove caffeine include water, ethyl acetate, chloromethane and carbon dioxide. These methods can be used to produce safe, good-tasting decaf coffee. The flavor of decaffeinated coffee depends on the quality of the beans, the properties of the blend, the roasting techniques and the methods used to remove caffeine.

Heart disease

Men who drink five or more cups of coffee a day for a long time may be prone to heart disease. However, recent studies have found that women who drink less than five cups of coffee a day do not have an increased risk of heart disease, and women who drink more than six cups a day do not seem to have an increased risk of heart attack. People with high blood pressure and cardiovascular disease: because coffee will make the heart beat faster and increase blood pressure, which is disadvantageous to the control of the disease.

Drinking decaffeinated coffee is more likely to lead to an increase in blood LDL cholesterol, resulting in damage to blood vessels. It is speculated that this may be because coffee manufacturers usually use stout coffee beans (Robusta), a fragrant coffee bean, to make decaffeinated coffee to supplement the aroma that is lost when caffeine is removed.

Coffee contains phenolic compounds, which are powerful antioxidants that delay the oxidation of LDL for up to three times, dissolve clots in the blood and prevent thrombosis, enhance vasoconstriction and avoid headaches. A small amount of coffee can also enhance myocardial contractility, promote blood circulation and prevent cardiovascular disease.

cancer

It has been reported that drinking a lot of coffee can lead to pancreatic cancer. But since then important studies have failed to confirm this, so the researchers withdrew this conclusion. Several other studies have failed to prove a link between coffee drinking and breast cancer. Drinking a lot of coffee seems to reduce the risk of bowel or rectal cancer, with people who drink at least five cups of coffee a day 40% less likely to develop colon cancer than non-drinkers, according to a study by Boston University.

Reproductive health

About 70-80% of pregnant women drink coffee, and most doctors and researchers now agree that it is safe for pregnant women to drink coffee. Studies have shown that daily consumption of up to 300mg of caffeine (about 3 cups of brewed coffee) does not have a bad effect on fertility. However, in order to avoid any problems, researchers suggest that doctors and their pregnant patients' caffeine intake should be at the lowest point of moderation (200-300mg/ days).

In 1988, due to some of the latest studies on caffeine, caffeine consumption has been deliberately reduced, and there is not enough evidence to prove that caffeine has adverse effects on human reproductive function. Since then, this idea has been confirmed by continuous research.

In 1980, researchers gave a group of pregnant mice a lot of coffee every day. As a result, some of the mice they gave birth to lost their toes. After the results were published, the US Food and Drug Administration advised pregnant women to drink less coffee, preferably not at all. Two years later, another study of 12000 pregnant women found that pregnant women who drank four or more cups of coffee a day were likely to give birth prematurely or give birth to underweight babies. But although it was later found that smoking was the main cause, the Food and Drug Administration advised pregnant women to drink less coffee.

Drinking too much coffee may hinder the development of the fetus, but it has not been proved to lead to premature delivery or underweight at birth. A study published by the University of North Carolina in 1995 also pointed out that researchers could not prove that caffeine may lead to preterm labor. Consuming more than 300 milligrams of caffeine a day (equivalent to about three cups of coffee) will make it more difficult for women to get pregnant. However, enough studies have shown that caffeine reduces women's chances of conception, increases the risk of miscarriage and slows fetal development. Many public health experts advise pregnant women to refrain from drinking coffee or to limit themselves to one cup a day.

Preterm labor

Too much coffee may increase the chances of abortion and fetal growth retardation. In 1992, a study found that women who smoked and drank heavily had a higher risk of preterm labor, proving that the risk of drinking coffee was very low. None of the findings of the study can confirm the conclusion that drinking caffeinated drinks is associated with preterm labor.

Osteoporosis

Two or more cups of coffee a day may increase the risk of osteoporosis and fractures in postmenopausal women. Osteoporosis is not specific to women, but most of it occurs in women. the causes of osteoporosis include calcium and protein intake, smoking, exercise habits, age and weight. Caffeine intake affects the reduction of bone mineral density, which occurs only in women who are limited to one glass of milk a day as adults. Coffee can only indirectly cause a lack of calcium balance, for example, some women use it instead of calcium-rich drinks.

One glass of milk provides enough calcium to offset the negative effects of eight cups of caffeine. This highlights the fact that caffeine is not a high risk factor for osteoporosis. Inadequate calcium intake is the main cause, and secondary factors, such as caffeine, have an effect.

At present, there is no direct evidence that caffeine can lead to osteoporosis, but caffeine increases calcium excretion, but it is not the main cause of osteoporosis. Insufficient calcium intake is the main cause. Therefore, it is still recommended that attention should be paid to the full intake of calcium.

Caffeine has an adverse effect on calcium metabolism. Leaving aside factors such as exercise and smoking, women who drink a lot of coffee lose more calcium through urination than non-drinkers, so their bones become thinner and bones are more likely to break. Moderate coffee drinkers who drink at least one cup of milk a day are enough to replenish the calcium lost by drinking two cups of coffee.

Control weight

Caffeine helps control weight. Caffeine increases the rate at which the body consumes calories. The effect of caffeine can last for more than two and a half hours. 100 mg of caffeine (about 1 cup of coffee) can increase the body's metabolic rate by 3% to 4. The more caffeine is absorbed, the greater the increase. If you also exercise at the same time, the heat will be consumed faster. Growing teenagers and children are more sensitive to the excitatory effect of caffeine, and they are more likely to have palpitations and affect sleep, and coffee has the side effect of reducing appetite, which is disadvantageous to the nutritional intake of children. Patients with peptic ulcers should drink less coffee because caffeine stimulates gastric acid secretion and may worsen the course of peptic ulcers.

Caffeine can also stimulate people's physical fitness. A small amount of caffeine can also improve exercise ability. Caffeine can turn body fat into fuel for muscles during exercise, so that muscles can work longer hours to get tired. Http://www.coffeebug.org

Conclusion

Most studies show that healthy people who drink the right amount of coffee are harmless to their health. For pregnant women or those in poor health, they want to minimize the risk, so they reduce their coffee intake to a moderate minimum. Whatever the right amount, follow this constant truth, so that most people can enjoy caffeinated foods and drinks without harming their health.