Nine types of people are not suitable for drinking coffee and black tea

Nine types of people are not suitable for drinking coffee and black tea

Coffee and black tea are essential drinks in many people's daily lives, bringing a refreshing aroma and a refreshing effect. However, not everyone is suitable for drinking these two drinks. According to medical research, there are nine specific types of people who should avoid or limit their intake of coffee and black tea.

1. Pregnant women

Pregnancy is a critical period for fetal development. Therefore, pregnant women need to pay special attention to their eating habits. Although one or two cups of coffee may not have a direct impact on the fetus, excessive intake can increase the risk of miscarriage, premature birth, and low birth weight.

2. Lactating women

Breastfeeding is one of the important ways to ensure the healthy growth of newborn babies. However, consuming large amounts of caffeinated beverages can cause it to be passed to babies through breast milk and may cause them to have sleep problems, anxiety and restlessness.

3. People with heart disease

Caffeine is a stimulant that can increase heart rate and blood pressure. For people who already have heart problems, consuming too much caffeine may cause heart rhythm abnormalities, high blood pressure, or even a heart attack.

4. Hypertension patients

High blood pressure is a common health problem, and caffeine constricts blood vessels and increases tension in the artery lining. This means that consuming too much caffeine may lead to higher blood pressure levels and further worsen symptoms of high blood pressure.

5. People with sensitive digestive systems

Some people are prone to acid reflux, stomach ulcers, or other digestive problems. Coffee and black tea contain large amounts of tannic acid, which can irritate the stomach lining and cause discomfort. They also increase bowel movements, which in some cases can lead to problems such as diarrhea or constipation.

6. Insomniac

Caffeine is a neurostimulant that increases alertness and concentration. For those who already have sleep problems, consuming too much caffeine may worsen insomnia symptoms and make it more difficult to fall asleep.

7. People with anxiety and depression

Caffeine can increase the release of neurotransmitters such as adrenaline and norepinephrine in the brain. These substances are associated with psychological problems such as anxiety and depression. For people who already have symptoms of anxiety or depression, consuming too much caffeine may worsen these problems.

8. People with impaired liver function

The liver is one of the main detoxification organs in the body, and caffeine needs to be metabolized by the liver before it can be excreted from the body. If you have impaired liver function or are undergoing treatment, you should limit your intake of caffeinated beverages.

9. Osteoporosis patients

Large intake of dark tea containing tannic acid may affect calcium absorption, thereby increasing the risk of osteoporosis. For people who already have osteoporosis problems, they should reduce their intake of dark tea.

In short, coffee and black tea are favorite drinks for many people, but they are not suitable for everyone. If you belong to one of the above nine types, please choose your drinks carefully and follow the advice given by your doctor or nutritionist.