Group 1 - The article discusses common foods perceived as healthy but lacking in actual nutritional value, such as rice oil, soup, fruit juice, and brown sugar water [1][2][3][10] - Rice oil is often mistakenly believed to be highly nutritious, but it mainly provides carbohydrates and water, similar to regular rice, without any special health benefits [2] - Soup is primarily composed of water and fat, with limited protein, vitamins, and minerals compared to the original ingredients, making it less nutritious than expected [3][4] Group 2 - The nutritional comparison of chicken soup and its meat shows that the soup contains significantly lower energy, protein, and essential nutrients, indicating that drinking soup does not equate to consuming the actual food [4] - Drinking fruit juice is not equivalent to eating whole fruits, as juicing leads to nutrient loss, particularly vitamin C, and can negatively impact blood sugar levels due to the release of free sugars [6][7][9] - Brown sugar water is not an effective source of iron, as the iron present is poorly absorbed, and excessive sugar intake can lead to health risks such as obesity and dental issues [10][11]

Group 1 - The article emphasizes that many popular health practices may not be beneficial and could even be harmful to health [1] - Drinking honey water in the morning can raise blood sugar levels, which is detrimental for diabetics, and may not effectively prevent constipation for most people [2] - Consuming salt water in the morning is unnecessary for detoxification and can lead to excessive salt intake, increasing the risk of osteoporosis and hypertension [3] Group 2 - Drinking plain water at a temperature between 20°C and 40°C is recommended as the best choice for the first drink in the morning, as excessively hot water can increase the risk of esophageal cancer [4] - White rice porridge is nutritionally poor and may exacerbate malnutrition if consumed exclusively, while incorporating whole grains can improve nutritional intake and stabilize blood sugar levels [6] - Bone broth is often believed to be a good source of calcium, but its actual calcium content is minimal, making it ineffective for calcium supplementation [7] Group 3 - While pig's trotters are rich in collagen, they do not effectively contribute to collagen synthesis in the body compared to other protein sources [8] - The high saturated fat content in pig's trotters can be detrimental to cardiovascular health, suggesting limited consumption [9] - Drinking red sugar water for menstrual pain relief is based on psychological effects rather than any specific nutritional benefit, and it is ineffective for pain caused by underlying medical conditions [10] Group 4 - Juicing fruits leads to a loss of nutrients, particularly vitamin C, and can significantly increase blood sugar levels due to the release of free sugars [12][14] - Cooking oil that smokes can produce harmful trans fats and carcinogens, and it is advised to use a method that prevents this [15] - Consuming food while it is still hot can pose risks, as temperatures above 65°C are classified as carcinogenic, and can also affect the glycemic index of starchy foods [16] Group 5 - Allowing food to cool at room temperature before refrigerating can promote bacterial growth, increasing the risk of foodborne illness; it is safer to store hot food directly in sanitized containers [18]