2. Most tea contains vitamins and various trace elements, such as fluorine, selenium, phosphorus, potassium and calcium. The nutritional value is very high. You can generally drink some tea during weight loss, because drinking some tea during weight loss can promote the metabolism of the body, promote gastrointestinal peristalsis, help digestion, clear stool, eliminate intestinal toxicity and relieve constipation. However, you should drink tea water in moderation during weight loss, because tea contains a lot of tea polyphenols, tannic acid and other substances. Drinking too much tea during weight loss may lead to a large loss of nutrients in the human body, which may easily damage the gastrointestinal tract and cause patients to have discomfort such as abdominal pain, diarrhea and nausea.