HUMAN NUTRITION

Detailed explanation-1: -Dyspepsia (indigestion) is a common symptom characterised by discomfort or pain in the upper abdomen. It typically occurs after eating or drinking. Symptoms may include early satiation, uncomfortable fullness, bloating, nausea, vomiting, belching, flatulence, heartburn, regurgitation and diarrhoea.

Detailed explanation-2: -Nausea is an uneasiness of the stomach that often accompanies the urge to vomit, but doesn’t always lead to vomiting. Vomiting is the forcible voluntary or involuntary emptying ("throwing up") of stomach contents through the mouth.

Detailed explanation-3: -The timing of the nausea or vomiting can indicate the cause. When appearing shortly after a meal, nausea or vomiting may be caused by food poisoning, gastritis (inflammation of the stomach lining), an ulcer, or bulimia. Nausea or vomiting one to eight hours after a meal may also indicate food poisoning.

Detailed explanation-4: -Dry heaving, sometimes called retching, refers to vomit-like feelings without any substance. Dry heaving happens when you attempt to vomit. Your airway closes off while your diaphragm contracts. Sometimes nausea accompanies dry heaving.

Detailed explanation-5: -Chronic nausea is when queasiness is constant or comes and goes for several days or more. It can be a symptom of a number of health conditions, like peptic ulcer disease or gastroesophageal reflux disease (GERD). People who are pregnant may also experience chronic nausea, better known as morning sickness.