According to the Japanese newspaper Asahi Shimbun, eating 3-5 oranges a day can prevent osteoporosis, a research result published in the American scientific journal PLoS ONE. So, is this study true? It is reported that the Japanese Fruit and Vegetable Research Institute has conducted a survey on the relationship between beta-cryptoxanthin blood concentration and health for more than a thousand residents since 2003, showing that the risk of osteoporosis is 92% lower for people who eat 4 oranges a day compared to those who do not eat oranges every day. Is this really the actual effect? In fact, people with osteoporosis have fragile bones and sometimes fractures can occur even when subjected to minor external forces, and such patients are often encountered in outpatient clinics. From the point of view of dietary prevention, oranges are rich in nutrients. In each hundred grams of orange pulp, it contains 56 mg of calcium, which is relatively high compared with some fruits, and is conducive to the supplementation of calcium elements. However, eating more oranges in order to increase these calcium elements still has certain side effects. For example, it is easy to cause fire in the corners of the mouth, people with poor intestines and stomach are also prone to induce gastric fecal stones, too much consumption of citrus fruits can also cause “orange disease”, the main symptom is the appearance of yellow skin. There are many dietary measures to prevent osteoporosis, such as drinking milk, increasing the intake of soy products and green leafy vegetables, nuts and so on. Drink less alcohol and less coffee. In winter, if the sun is better, you should enjoy nature’s sunlight more often, because timely exercise and sun exposure can slow down the loss of bone mass and also promote calcium absorption as well as bone cell activity. The time of activity is generally recommended from 9:00 to 10:00 a.m. and 2:00 to 5:00 p.m. is better.