Effect of eating citrus on blood pressure
At least 30 substances in citrus fruits have been proved to be beneficial to human health. For patients with hypertension and cardiovascular and cerebrovascular diseases, rutin contained in citrus has recognized antihypertensive effect. Flavanone and citrus flavonoids can maintain the normal elasticity of human blood vessels, reduce the fragility and permeability of blood vessel walls, and prevent capillary bleeding, which is beneficial to people who are prone to bleeding at ordinary times, especially those who are prone to arteriosclerosis.
Citrus is full of treasures.
Citrus contains a large number of terpenoids represented by limonene, which has the functions of refreshing the brain, reducing stress reaction, eliminating fatigue and relieving tension. Eating a citrus will make you feel relaxed and happy when you are busy, nervous and anxious at work. Orange peel is rich in hesperidin, which has the functions of lowering blood pressure and dilating coronary artery. Citrus is also rich in minerals and trace elements, especially potassium, which is beneficial to hypertension and cardiovascular and cerebrovascular diseases. However, although citrus is a treasure, eating too much (especially red orange) is easy to get angry, and there will be symptoms such as bitter mouth, dry mouth, sore throat and constipation.
Taboos for eating citrus
Because eating too many oranges is easy to get angry, don't eat more than three oranges a day. The interval between drinking milk and eating citrus every day should be at least 1 hour, so as to prevent the organic acids in citrus from coagulating protein in milk and causing abdominal distension, abdominal pain and diarrhea. Because citrus contains ingredients that inhibit the ability of liver to metabolize drugs, the interval between taking medicine and eating citrus for patients with hypertension, cardiovascular and cerebrovascular diseases should be at least 2 hours, so as to avoid the sudden increase of drug concentration in blood and lead to adverse drug reactions.
Citrus contains carotene. Due to the intake of citrus (more than1~ 2kg per day) or carrots in a short period of time, the liver can't metabolize carotene into vitamin A in time, so that the content of carotene in the blood suddenly increases, leading to yellow pigmentation in the skin and tissues, resulting in carotene anemia and yellow skin.
Nutritional value of another citrus-grapefruit
Grapefruit is a substitute in citrus family, with pale yellow, reddish brown and red skin, smooth skin and yellowish white, pink and crimson flesh. In addition to the nutritional components of citrus, it is mainly rich in lycopene (which has strong antioxidant effect and can scavenge free radicals), potassium, vitamin C, vitamin P and grapefruit enzyme.
Grapefruit has the characteristics of low fat, low calorie, high cellulose and strong antioxidant effect, and has the functions of preventing cardiovascular diseases, delaying aging, losing weight and assisting anti-cancer. Because grapefruit contains more citric acid, it is not advisable to eat too much, and drink milk at the same time, so as to avoid the protein in milk solidifying and affecting absorption.
Never eat fruit indiscriminately.
1, don't eat a lot of fruit in a short time.
Excessive consumption of fruit will lead to copper deficiency in human body, which will lead to the increase of cholesterol in blood and cause coronary heart disease, so it is not advisable to eat too much fruit in a short time. Secondly, fruit itself is sugar. Eating too much sugary food and doing less exercise can cause hyperglycemia or elevated blood lipids. Obesity, diabetes, hyperlipidemia and fatty liver patients, as well as pregnant women should pay special attention.
2. Fruits should not be juiced for drinking.
Many people think that drinking fresh fruit juice is delicious and convenient. However, nutrition experts remind that except for people with bad teeth, it is best not to juice fruits, but to eat them directly is more nutritious. Because drinking fruit juice will reduce people's intake of cellulose rich in fruits. These celluloses have the health care functions of preventing and reducing diabetes and cardiovascular diseases, and can also effectively stimulate gastrointestinal peristalsis and promote defecation.
3. Buy less fruit cut by the roadside.
Fruit is rich in vitamin C, which is easily oxidized in the air. High temperature and sunlight will make it lose, while the nutritional content of fresh fruit peeled and diced in advance may be reduced. Also, fresh fruits that are not disinfected when cutting fruits, and fruits that are not cleaned when cutting with a knife, are easily contaminated by bacteria.
4. The fruit will produce nitrite after freezing.
Nutrition experts remind that frozen fruits contain nitrite, and eating too much nitrite can cause headaches, dizziness, nausea, vomiting and other symptoms.
Eating immature bananas can lead to constipation.
Mature bananas are rich in dietary fiber, which can increase the volume of feces and promote intestinal peristalsis. Immature bananas may have the opposite effect. Containing more tannic acid will inhibit the secretion and peristalsis of gastrointestinal fluid. If you eat too much, it will cause constipation or aggravate constipation.
6, eating mangoes needs to prevent allergies.
Mango contains a lot of fruit acids, amino acids and so on. These substances contain more irritating substances, which will cause allergies when they come into contact with human skin. In severe cases, they will be red, swollen and painful. But not everyone is allergic to mango. Even if they are allergic, the allergic time and symptoms are different. Some people will react the next day after eating mango, and some people will have symptoms after two or three days.
7. It is not advisable to eat fruit immediately after a meal.
Eating fruit immediately after a meal will not help digestion, but will cause flatulence and constipation. Therefore, it is advisable to eat fruit 2 hours after meals or 1 hour before meals.
8. Rinse your mouth after eating fruit.
Some fruits contain a variety of fermented sugars, which are very corrosive to teeth. If you don't rinse your mouth after eating, fruit residues in your mouth can easily cause dental caries.
9, fruit avoid alcohol disinfection.
Although alcohol can kill bacteria on the surface of fruit, it will change the color, fragrance and taste of fruit. Alcohol and acids in fruits will reduce the nutritional value of fruits.
10, avoid peeling raw fruits.
Some people think that the vitamin content in the peel is higher than that in the pulp, so when eating fruit, eat it with the skin. As we all know, when fruit is damaged by diseases and insect pests, pesticides are often sprayed, which will soak and remain in the wax of the peel, so the pesticide residue in the peel is much higher than that in the pulp.
1 1, eat fruit in the afternoon and absorb it well.
Some people are used to eating fruit when they get up. In fact, most fruits are cold foods, and eating them just after getting up will stimulate the stomach. It is best to eat fruit at three or four in the afternoon, which is conducive to the absorption and utilization of nutrients.
12, the risk of buying imported fruits
Many consumers think? Foreign fruit? It's safer. In fact, the quality and safety mechanism of fruits in China is relatively sound, and foreign fruits travel across the ocean, so more preservatives and preservatives are needed in fresh-keeping storage, which is relatively more dangerous than local fruits.
Finally, fruits and vegetables are indispensable and cannot replace each other. If you only eat fruit, you will lack nutrients such as folic acid; Eating too little vegetables will lack cellulose and may cause constipation.