The symptoms of not being able to eat much food and hiccups may be caused by bad dietary habits, mental stress, or stomach diseases. 1. Bad eating habits: some people like to overeat in daily life, eat faster, it is easy to swallow a lot of air, resulting in gas accumulation in the stomach, the patient will not be able to eat, but also hiccups. 2. Mental tension: If you are under mental stress and emotional tension and anxiety when eating, you will involuntarily speed up your breathing and swallow air, meanwhile, mental tension, stimulation of vagus nerve and spasm of gastrointestinal smooth muscle will make you unable to eat with hiccups. 3. Stomach diseases: If you suffer from gastritis, reflux esophagitis and other diseases, usually have a loss of appetite, hiccups, acid reflux and other symptoms. If the hiccups are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner to clarify the cause and give targeted treatment.