Drinking coffee: not only X is tall but also very healthy.

Coffee is one of the most popular drinks in the world. There are usually several coffee shops in busy neighborhoods, and the occasional aroma in the crack of the door slows down the hurried pedestrians.

In addition to recreation, coffee is also an important refreshing drink for many people, such as office workers and student parties. Many people need to drink two cups of coffee a day in order to have enough energy to cope with the busyness of the day.

Hearing that many people have headaches, palpitations and other discomfort after drinking coffee, they can't help but wonder: is coffee harmful to health?

Drinking coffee is bad for the heart. Not necessarily!

The ingredients of coffee are complicated.

Generally speaking, the amount of caffeine in each cup of coffee is about 100~200mg. Coffee also contains chlorogenic acid and other active substances that can affect the physiological process of the human body, not to mention countless new substances created by the Maillard reaction during the roasting of coffee beans.

1. Uncomfortable symptoms caused by caffeine

A large part of the effect of coffee is provided by caffeine. In addition to being refreshing, most of the uncomfortable symptoms such as palpitations, headaches and insomnia in coffee-sensitive people are caused by caffeine, which can raise blood pressure by about 3mmHg.

However, caffeine is still a "low toxic substance".

Data from mouse experiments speculate that for an adult who weighs 60Kg, consuming about 10 grams of caffeine is "dangerous"-the "median lethal dose" (LD50) commonly used in toxicological tests to measure the toxicity of substances-which is equivalent to drinking 100 cups of coffee at a time.

Obviously, there is no danger at all if coffee is used as a drink. If you drink 100 glasses of water in one breath, you need to worry about the electrolyte disorder caused by water poisoning.

The human body is very tolerant to caffeine, and if you take 200mg caffeine for three days, the body's spontaneous countermeasures can offset these cardiovascular effects of caffeine.

2. Alcohols in coffee affect cholesterol metabolism.

In addition, some alcohols in coffee (coffee alcohol, coffee bean alcohol, etc.) will affect the metabolism of cholesterol.

Studies have shown that after two months of brewed coffee (espresso and fancy coffee, which are common in coffee shops), blood cholesterol levels and low-density lipoprotein (LDL), which is responsible for delivering cholesterol, are increased, while filtered coffee does not affect the amount of cholesterol in the blood.

Perhaps it is the pressurized substances extracted from espresso that cause these changes.

In particular, I would like to point out that cholesterol is not "unhealthy" for healthy people, cholesterol is also an essential substance for the human body. Although many kinds of coffee may increase the amount of blood cholesterol a little, it does not cause dangerous "hypercholesterolemia".

In fact, the risk of cardiovascular disease associated with high cholesterol is reduced by drinking coffee.

Studies have shown that for those who already have coronary heart disease or even have had a myocardial infarction, drinking coffee will not affect their heart function at all, let alone trigger a new round of pain.

What about arrhythmias? Although many people experience temporary discomfort such as palpitations after drinking coffee, coffee does not cause several really dangerous arrhythmias, even for people who have already had a heart attack, according to a new study.

Second, drinking coffee is actually quite healthy

In addition, tell those from the "do not drink coffee will die star" people a big piece of good news: over the decades, numerous studies have shown that regular coffee drinkers have shown considerable resistance to several major types of modern diseases.

However, drinking coffee does not protect against cancer.

In addition, if you also rely on smoking to refresh yourself, I'm sorry, as the most notorious drug in human history, the protective effect of coffee is nothing at all.

Although some people feel palpitations after drinking coffee, regular coffee drinkers have not found that drinking coffee can lead to some really dangerous arrhythmias such as ventricular fibrillation and atrial fibrillation. on the contrary, coffee reduces the likelihood of its occurrence.

For diseases such as cerebral infarction and cerebral hemorrhage, drinking 1-3 cups a day can significantly reduce the risk, and if drinking 4-6 cups, the reduction will be even greater.

The data also show that there is a group of coffee fanatics who drink more than six cups of coffee a day, and their cerebral vessels are neither good nor bad, just like ordinary people.

There are even many studies that suggest that coffee also plays a role in protecting against Alzheimer's disease.

Third, worry that coffee is bad for your health? I'll teach you some tricks.

Are you sensitive to coffee? Are you worried that coffee will cause calcium loss? Here are a few tips to help you enjoy your coffee.

Don't drink coffee when taking medicine.

Drink decaffeinated coffee

Drink no more than 5 cups a day

Drink a small amount of coffee for a week

Add two tablespoons of milk to each cup of coffee

Drink coffee while ensuring a healthy diet.

After caffeine enters the body, like many other drugs, it is metabolized through the liver, while many foods, such as grapefruit juice and alcohol, as well as various drugs, affect the liver's ability to metabolize coffee to varying degrees.

Sometimes when the metabolic capacity of the liver is suppressed, the metabolism of caffeine slows down, and caffeine stays in the body for longer, resulting in longer refreshing and cardiovascular stimulation.

Therefore, people who are sensitive to coffee may need to be careful not to drink coffee while taking medicine, or they can drink it with a low-caffeinated variety.

I have seen some people on the Internet worry about the loss of calcium caused by drinking coffee, but in fact, this problem does not exist.

First, caffeine requires a large dose, such as at least 5 to 6 cups of coffee a day, to really affect calcium metabolism in the kidneys.

In addition, the human body has a strong adaptability, drinking continuously for a week, the human body's tolerance to coffee will be greatly improved.

Finally, the rate of calcium loss caused by coffee is so low that the loss of calcium caused by one cup of coffee can be easily offset by two tablespoons of milk. Therefore, people who like milk with coffee don't have to worry at all.

For people who like black coffee, as long as other diets are healthy and balanced, there is no evidence that coffee can cause health problems such as bone loss and osteoporosis.

Is coffee a magic medicine? It's impossible!

Here is very clear to you: there is no magic medicine in the world, no matter how good coffee is, it is no exception!

Don't try to get a healthy body and mind through one thing.

Perhaps the role of coffee is because people who like to spend time making coffee for themselves are better able to take care of themselves; perhaps it is the healthy lifestyle they have always maintained, rather than the coffee itself, that brings health.