Is Coffee Good for You? The Health Risks and Benefits

Coffee can be either healthful or harmful depending on how much is consumed and the individual's constitution. Moderate intake is linked to a lower risk of Alzheimer's disease, Parkinson's disease, gallstones, and fatty liver, while excessive consumption may cause insomnia, stomach irritation, higher cholesterol, reduced iron absorption, and even osteoporosis.

A typical drip coffee contains about 85 milligrams of caffeine per 230 milliliters, so daily intake matters. Practical steps such as setting a caffeine limit, using paper filters, and choosing when to drink can help balance coffee's positive and negative effects across the brain, liver, heart, digestion, metabolism, and women's health.

Is coffee a healthful beverage or a hidden health risk? This question has long puzzled many enthusiasts. In fact, whether coffee is good or bad for the body depends on how much you drink and your individual constitution. Moderate intake can reduce the risk of Alzheimer's disease and Parkinson's disease, and lower the occurrence of gallstones and fatty liver; but excessive consumption may lead to insomnia, stomach irritation, elevated cholesterol, impaired iron absorption, and even osteoporosis. This article will systematically sort out the pros and cons of coffee from multiple dimensions including the head, liver and gallbladder, cardiovascular system, gastrointestinal tract, metabolism, and women's health, and provide practical advice such as the daily caffeine limit, paper filtering, and timing of consumption, to help you drink with peace of mind and enjoyment.

Is coffee a health killer?

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Coffee's effects on health can be described as mixed. Too much intake brings a series of negative effects, such as difficulty falling asleep, stomach irritation, elevated cholesterol levels, hindered iron absorption, and an increased risk of osteoporosis. However, as long as you get the balance right and drink a moderate amount every day, it can actually help reduce the probability of Alzheimer's disease and Parkinson's disease, while also reducing the occurrence of gallstones and fatty liver.

No matter how busy you are, still have a cup of coffee?

Coffee is an essential daily beverage for many people, but some also treat it as a poison harmful to health. If we were to judge whether coffee is good or bad, we could probably hold an all-night debate. I remember when I was in graduate school, rich coffee aromas often drifted out of the professors' offices, and a group of us teachers and students in nutrition always discussed various nutrition questions amid the scent of coffee. Isn't this scene rather contradictory? Shouldn't people who study nutrition avoid drinking coffee? In fact, coffee truly has both positive and negative effects on health, and the key is to drink it in moderation according to your own condition.

Drinking coffee the right way is what makes it enjoyable!

Coffee is truly a beverage that makes people both love and fear it, and that mellow aroma is an almost irresistible temptation. According to the statistical results of various studies, drip coffee sold in general coffee shops contains about 85 milligrams of caffeine per 230 milliliters (different shops may have more or less due to differences in strength). Basically, daily caffeine intake should preferably not exceed 300 milligrams. In addition, my advice is that unless there is a special need, try not to drink decaffeinated coffee, because the process of removing caffeine requires extraction with organic solvents, so decaffeinated coffee inevitably retains some organic solvents that are harmful to health. Some pregnant women deliberately choose decaffeinated coffee to avoid caffeine, but as a result may end up drinking organic solvents. However, later the food industry widely adopted supercritical extraction technology, and the hidden danger of organic solvent residue has been greatly reduced. In addition, some instant coffees are made by roasting green coffee beans and then blending in coffee flavorings and non-dairy creamer; drinking this kind of "coffee" gives you none of the benefits coffee should have.

Coffee that people both love and hate

Now, let us reveal the true face of coffee.

When it comes to the components in coffee, most people first think of caffeine, but coffee beans contain far more substances than that, so coffee's effects on health are not limited to caffeine. Below we analyze the pros and cons of coffee one by one according to different parts of the body:

• Effects on the head and brain

【Pros】

1. Reduces Alzheimer's disease: multiple studies have found that people who drink 2 to 5 cups of coffee a day are less likely to develop Alzheimer's disease in old age than those who do not drink coffee or drink less than 1 cup a day.

2. Enhances cognitive ability: research shows that if older adults maintain the habit of drinking coffee, it helps improve cognitive function and short-term memory.

3. Lowers the risk of Parkinson's disease: research results show that people with a regular coffee-drinking habit have a relatively lower probability of developing Parkinson's disease in old age.

4. Relieves headaches: caffeine has an analgesic effect and can reduce migraine and headache symptoms.

【Cons】

1. Causes irritability and sleep disturbances.

2. Some people who drink too much coffee experience irritability, restlessness, and difficulty falling asleep.

• Effects on the liver and gallbladder

【Pros】

1. Reduces fatty liver: some studies have found that coffee drinkers have a lower incidence of fatty liver, with the preventive effect especially evident for alcoholic fatty liver.

2. Lowers the chance of gallstones: research shows that people who drink 2 to 3 cups of coffee a day have a 40% lower probability of developing gallstones than those who never drink coffee. However, among people who drink decaffeinated coffee, the gallstone rate did not decrease.

【Cons】

None found so far

• Effects on the cardiovascular system

【Pros】

1. Lowers the chance of myocardial infarction in women.

2. A Spanish study lasting more than 20 years, by observing the effects of drinking coffee, found that women who drink 2 to 3 cups of coffee a day can reduce the mortality rate from myocardial infarction by about 25%.

【Cons】

1. Raises cholesterol: coffee beans contain a compound called cafestol, which raises the body's cholesterol level, with the effect especially significant in women. Coffee that is generally brewed directly by machine without paper filtering tends to contain cafestol; if it is filtered again with paper after brewing, most of the cafestol can be removed, reducing the risk of elevated cholesterol. Therefore, it is recommended to filter coffee with paper.

2. Increases the risk of anemia: some people are used to having a cup of coffee immediately after a meal, which easily hinders the absorption of iron from the meal and leads to iron-deficiency anemia. It is best to drink coffee 1 to 2 hours after a meal.

• Effects on the gastrointestinal tract

【Pros】

1. Helps with bowel movements.

2. Coffee is a good substance for promoting intestinal peristalsis. When bowel movements are not smooth, you can try drinking some black coffee, and the urge to go will come quickly, which can relieve constipation.

【Cons】

1. Sometimes it easily irritates the stomach.

2. Coffee easily damages the gastrointestinal mucosa, so it is recommended not to drink it on an empty stomach. If you have gastritis, gastric ulcers, or duodenal ulcers, you should stop drinking coffee.

• Effects on metabolism

【Pros】

1. It has the effect of lowering diabetes risk.

2. People who drink coffee regularly every day can reduce the risk of developing type 2 diabetes.

• Effects on women

【Cons】

1. Increases the risk of osteoporosis: drinking coffee has a relatively large impact on bone density in postmenopausal women, and heavy coffee drinking by postmenopausal women increases the danger of osteoporosis. It is recommended that postmenopausal women limit themselves to 2 cups of coffee per day, and it is best to add milk to the coffee when drinking it (not non-dairy creamer or cream balls).

2. Increases the risk of premature birth: research has found that the more caffeine is consumed, the higher the probability of premature birth in pregnant women. Therefore, pregnant women had better not drink coffee; if they really want to drink it, they should limit themselves to 1 cup for a taste.

Health tips

1. Everyone should drink coffee according to their own physical condition, learn to look up or ask about the caffeine content of the coffee they often drink, and it is safest to keep daily caffeine intake at no more than 300 milligrams.

2. No matter which kind of coffee you drink, it is recommended to filter it with paper first to filter out substances that raise cholesterol.

3. Do not drink coffee immediately after a meal, so as not to affect iron absorption and cause anemia over the long term.

4. If postmenopausal women need to drink coffee, it is recommended to add milk to the coffee.

The above content is compiled by CoffeeHunters, a coffee news website.