1. Because of the soft function of jade, some people with excessive yang in the body are not suitable to wear jade ornaments, such as internal heat, strong liver fire and high blood pressure. 2. Pregnant women should be cautious when wearing jade, especially those containing radioactive elements, because wearing it for a long time may affect the fetus. 3. Patients with long-term illness should avoid wearing jade during the treatment with medical devices, because they may interfere with these devices. 4. Because the energy characteristics of jadeite are relatively stable, some people who are sensitive to energy, such as epilepsy patients and heart patients, should wear it carefully. The effects of jade on human body are: 1. Jade can balance human energy and nourish the body. It can reconcile the yin and yang of the human body, dispel the accumulated gas and make the human body in a harmonious state. 2. Jade ornaments can improve people's mood, enhance people's confidence and courage, and help people shield the interference of negative energy. 3. Jade also has the function of exorcism, which can open up bad gas fields and introduce good gas fields to help people get good health and wealth.