Eating These Fruits in Winter Can Lead to Poisoning
In winter, people can eat summer fruits like watermelons and strawberries, but they are quite expensive. However, nutritionists recommend that it's best to eat the cheapest seasonal fruits in winter. This is because off-season fruits not only have low nutritional value but are also expensive, making them unsuitable for regular consumption.
Eating These Fruits in Winter Can Lead to Poisoning
"The value of off-season fruits compared to seasonal ones lies in the novelty of eating them, not their nutrition." Those colorful, bright, and tempting off-season fruits are often grown in greenhouses, lacking the necessary sunlight, wind, and soil conditions of seasonal fruits. Therefore, the most nutritious fruits are the cheapest varieties, which are often the seasonal ones.
Fruits should be bought in the quantity you plan to eat, as each fruit has its optimal storage temperature and shelf life. The longer they are stored, the more their nutritional value and flavor deteriorate. Most fruits should be stored in the refrigerator without washing first, otherwise they can easily spoil and rot. They should ideally be consumed within a week. However, fruits like bananas, pineapples, mangoes, papayas, and lemons should only be stored in a cool, shaded corner indoors and are not suitable for long-term refrigeration.
Grapes
Additionally, some unscrupulous vendors use chemical ripening agents to sell off-season fruits, which can harm human health. Here are a few examples of dangerous off-season fruits.
1. Grapes
Some unscrupulous vendors and farmers use a ripening agent—ethephon. Users dilute ethephon with water, immerse unripe green grapes in the solution, and within a day or two, the green grapes turn purple. Although this chemical has low toxicity, long-term consumption is harmful to human health.
2. Bananas
To make banana skins appear tender and yellow, some unscrupulous vendors use sulfur dioxide to ripen them. However, the flesh remains hard and not sweet at all. Sulfur dioxide and its derivatives can harm the human respiratory system, cause damage to the brain, liver, spleen, and kidneys, and even affect the reproductive system.
Strawberries
3. Watermelons
Excessive use of ripening agents, expanders, and highly toxic pesticides can make watermelons toxic. Such watermelons have uneven stripes on their rind, exceptionally bright red flesh when cut, but white seeds, and leave a strange taste in the mouth after eating.
4. Strawberries
Large, irregularly shaped strawberries with hollow centers are usually caused by excessive hormones. Strawberries treated with ripening agents or other hormonal drugs have a shorter growth period, look fresh in color, but their flavor becomes dull. This type of strawberry should be consumed with caution. Eating large quantities can affect normal human development, such as causing premature development in children.
Vegetable Purchase Recommendations for Winter:
1. Some vegetables may still show signs of unripeness on their skin or other parts after being force-ripened, so be careful when buying. You can remove residual toxins by methods like exposing them to light, peeling, blanching in water, or stir-frying.
2. If you can't resist the temptation of various off-season vegetables in winter, it's best to choose options like onions, carrots, and eggplants, which have less pesticide residue. Try to avoid buying vegetables with strange shapes or colors.
3. Try to buy fresh ingredients from the market and cook them yourself, rather than buying pre-made products. Pre-made foods often undergo repeated processing, which can easily destroy their nutritional value. It's also difficult to ensure their freshness, and they may even contain harmful additives.
Recommendations for What Vegetables to Eat in Winter
As green leafy vegetables are relatively scarce in winter, what vegetables should you eat? Winter is suitable for eating root vegetables like sweet potatoes and potatoes. They are rich in vitamin C, vitamin B, and red sweet potatoes also contain a significant amount of carotene.
Among the common vegetables available in winter, in addition to Chinese cabbage, you should also choose options like cabbage, radishes (both red and white), carrots, soybean sprouts, mung bean sprouts, and rapeseed. These vegetables are rich in vitamins. By frequently rotating varieties and combining them wisely, you can meet the body's vitamin needs.
Different types of vegetables contain different nutrients. It is recommended to eat vegetables daily, and several times a week. To answer what vegetables to eat in winter, choose from five types: dark green, orange/yellow, legumes, starchy vegetables, and other vegetables. By frequently changing varieties and ensuring diversity, you can fully absorb different nutrients from various foods.
You should consume about 500 grams of vegetables daily to provide a good amount of vitamin C, carotene, and a considerable amount of minerals like calcium and iron. Among these, colored vegetables and leafy greens should account for about 50%. So, what vegetables to eat in winter? Eat more dark green vegetables like broccoli, kale, and other dark leafy greens. Orange-red vegetables include carrots, sweet potatoes, and pumpkins. For example, for a 2000-calorie diet (about 1000 calories for a 1-year-old child), the dietary guidelines recommend the following vegetable intake: 3 cups of dark green vegetables per week (1 cup is about 240 grams), 2 cups of orange/yellow vegetables per week, 3 cups of legumes (dry beans) per week, 3 cups of starchy vegetables per week, and 6.5 cups of other vegetables per week.
Recommended Vegetables for Flu Season
Colorful vegetables—Tomatoes, carrots, and spinach are rich in antioxidants that protect immune cells from environmental damage and enhance the ability of white blood cells to kill foreign microorganisms. At the same time, because these foods also contain large amounts of vitamin C, they help resist the flu and enable patients to recover quickly. Colorful fruits like cape gooseberries and kumquats have the same effect.
Vegetables rich in vitamin E—Studies have confirmed that sufficient vitamin E in children can significantly enhance the ability of T cells to fight infections. Therefore, foods rich in vitamin E, such as various dark green vegetables, almonds, and malt, are also essential during flu season.
Garlic and onions—In Western folk medicine, drinking onion juice to treat coughs is popular. Onions can enhance the immune activity of T cells, thereby boosting the overall immune response. Foods containing immune-active substances similar to those in garlic and onions can act as cleansing and disinfecting agents in the human body, killing and eliminating toxins and bacteria.