Is drinking coffee on an empty stomach harmful? matters needing attention in drinking coffee

1. Caffeine can stimulate the central nervous system and muscles, so it can boost the spirit, improve thinking and memory, and restore muscle fatigue.

two。 Action on the cardiovascular system can improve heart function, dilate blood vessels and promote blood circulation.

3. For the gastrointestinal system, it can help digestion and help decompose fat.

4. Recently, a new study in the United States shows that drinking coffee can increase libido, because coffee can improve blood circulation, speed up the heartbeat, and stimulate the activity of the nervous system, so regular coffee drinkers are more sexually active than non-regular drinkers. Not only that, but also reduce the risk of impotence.

The harmful effects of caffeine

1. Aggravate high blood pressure: caffeine is often combined with other simple painkillers because of its analgesic effect, but if you take it in large quantities for a long time, if you already have high blood pressure, using a lot of caffeine will only make your situation worse. Because caffeine alone can raise blood pressure, coupled with emotional stress, it can have a dangerous multiplication effect, so people at risk of high blood pressure should especially avoid drinking caffeinated drinks during stressful times at work. Some people who drink coffee all the year round think they are immune to the effects of caffeine, but this is not the case. One study shows that blood pressure can rise for up to 12 hours after drinking a cup of coffee.

two。 Induce osteoporosis: caffeine itself has a good diuretic effect. If you drink a lot of coffee for a long time, it is easy to cause bone loss and adversely affect the preservation of bone mass. For women, it may increase the threat of osteoporosis. But the premise is that people who don't get enough calcium in normal food, or people who don't move very often, plus women after menopause, calcium loss caused by lack of estrogen, coupled with a large amount of caffeine, may pose a threat to bones. If you can enjoy it in a reasonable amount, coffee beans contain vitamin B and nicotinic acid, and roasted beans contain more free fatty acids, caffeine and tannins than raw coffee beans, so coffee itself has calories, but not much. The main calories come from the cream and sugar you add to your coffee. You can still stop eating without choking.