The three types of people who are determined not to eat grapefruit are people with high blood pressure, people with bad stomach and people with bad liver.

First, people with hypertension

For people with hypertension, you should not eat grapefruit during taking antihypertensive drugs, because grapefruit is rich in various insulin components and vitamin C. Therefore, for your own health, you should avoid eating grapefruit.

Second, people with bad stomachs

For people with poor gastrointestinal tract, grapefruit is rich in acidic substances and pectin, and the acidity and pectin content of grapefruit are high, so people with poor stomach can't eat grapefruit.

Third, people with poor liver

Grapefruit is a cold fruit. For people with poor liver, grapefruit contains some organic acids. Therefore, people with poor liver should try to avoid eating grapefruit, but they can eat some fruits such as litchi, kiwi, pitaya, apple and lemon.

Grapefruit selection skills and key points:

1, skin feel: Touch the skin of grapefruit. If it feels rough or even a little prickly, then this grapefruit may be fresh. If the skin feels too smooth, it may be grapefruit that has been stored for too long.

2, look at the shape: observe the overall shape of grapefruit, many people think that the top and bottom are as wide and narrow, it will be better and more symmetrical, and the pulp will definitely be full, but it is not. When choosing grapefruit, you should choose the one with a sharp top, but not too sharp. The bottom is round, like a "tumbler", which will have a better taste and more juice.

3, press the skin: press the grapefruit skin with your hand. In fact, the grapefruit skin is also very particular, and its elasticity can test the thickness of the grapefruit skin. If you press it, it will rebound quickly and have a sense of resistance, which means that the grapefruit pulp is full, thin and fleshy, so you can buy it with confidence.

Reference to the above content: Baidu Encyclopedia-Grapefruit