Loss of appetite is known as loss of appetite. There are several causes of loss of appetite, seasonal factors being one of them, with more patients experiencing indigestion in the summer. Generally, food with acidic taste is good for appetite. It is important to eat a diet rich in easily digestible foods such as porridge and pasta. If children have digestive problems, they should be supplemented with certain vitamins and trace elements, such as zinc and calcium. Adults eat more seasonal vegetables, fruits and melons, and can also consume a small amount of vinegar to promote digestion.