The symptoms of white hair and bad breath are generally caused by different reasons. White hair can be caused by neurasthenia, aging and other factors, while bad breath is generally caused by gastrointestinal and oral diseases, or it may be caused by the same reason, such as aging. 1. As age continues to rise, the body’s metabolic rate gradually slowed down, the body’s function has been reduced, so that the secretion of salivary glands decreased, and the scalp can not get enough nutrients, resulting in white hair, bad breath phenomenon. 2. Long-term mental tension or excessive work pressure can lead to weakened nerve function, causing endocrine disorders in the human body, which can not provide sufficient nutrition for the hair, the symptoms of white hair. Long-term brushing of the oral cavity is not clean or long-term residual food residues, which will lead to chemical reactions in the oral cavity of the food, and will cause local inflammatory reactions in the oral cavity, resulting in the symptoms of bad breath. Gastrointestinal tract dysfunction can cause the food accumulated in the stomach to react, thus causing bad breath. Therefore, it is recommended to go to a regular hospital for a comprehensive examination to make a clear diagnosis when the symptoms of gray hair and bad breath occur.