Apples contain a large amount of sugars and potassium salts, and excessive intake is not conducive to heart and kidney health; people with coronary heart disease, myocardial infarction, kidney disease, or diabetes should not eat too many. Banana:
Bananas are cold in nature and contain a high amount of sodium salt. People with chronic nephritis, high blood pressure, or edema should be especially cautious when eating them. Due to their high sugar content, diabetics should eat them in moderation. Citrus:
Citrus fruits are cool in nature. Elderly people with weak functions of the stomach, intestines, kidneys, or lungs should not eat too many, as it may easily induce symptoms such as abdominal pain and weakness in the lower back and knees. Eating too many oranges can also easily lead to "heatiness," causing mouth sores, red and swollen eyes, and triggering hemorrhoids. Watermelon:
Watermelon has a high water content and is an excellent fruit for cooling off in the summer heat. However, its flesh is cold in nature, and elderly or frail people who eat too much may easily experience abdominal pain or diarrhea. People with heart failure and severe edema should also not eat too much. Lychee:
Consuming lychees in large quantities continuously can cause a person's face to turn pale and lead to symptoms such as dizziness, palpitations, cold sweats, yawning, and fatigue. This is caused by lychees inducing an exogenous hypoglycemic reaction, which is medically known as "lychee disease." Persimmon:
The flesh of persimmons contains a large amount of tannins and persimmon gum. Tannins have a strong astringent effect, so patients with constipation should not eat too many. Additionally, eating persimmons on an empty stomach or after eating crab can easily lead to persimmon stones. Therefore, patients with gastritis, excessive stomach acid, or a weak spleen and stomach, as well as those who are fasting or fatigued, should avoid or eat very few persimmons.