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Symptoms and Causes (source : Mayo Clinic)

Overview
Diabetes mellitus refers to a group of diseases that affect how the body uses blood sugar (glucose). Glucose is an important source of energy for the cells that make up the muscles and tissues. It's also the brain's main source of fuel.

The main cause of diabetes varies by type. But no matter what type of diabetes you have, it can lead to excess sugar in the blood. Too much sugar in the blood can lead to serious health problems.

Chronic diabetes conditions include type 1 diabetes and type 2 diabetes. Potentially reversible diabetes conditions include prediabetes and gestational diabetes. Prediabetes happens when blood sugar levels are higher than normal. But the blood sugar levels aren't high enough to be called diabetes. And . . .

Symptoms and Causes (source : MEDICAL NEWS TODAY)

Postnasal drip is when the sensation of mucus buildup at the back of the throat causes discomfort. The nose, throat, and sinuses are all constantly producing mucus. Mucus is a thick and slippery substance that helps to keep the airways from drying out throughout the day. The air people breathe is full of germs, pollen, and other environmental pollutants. When the air enters the body, these particles can create problems if they are not filtered out. It is the job of mucus to trap these foreign bodies and help eliminate them.

Mucus usually goes unnoticed. It harmlessly mixes with saliva throughout the day and is swallowed or blown from the nose. However, if the body produces too much mucus, it becomes much more noticeable. When this . . .

Symptoms and Causes (source : Mayo Clinic)

Anorexia (an-o-REK-see-uh) nervosa — often simply called anorexia — is an eating disorder characterized by an abnormally low body weight, an intense fear of gaining weight and a distorted perception of weight. People with anorexia place a high value on controlling their weight and shape, using extreme efforts that tend to significantly interfere with their lives. The physical signs and symptoms of anorexia nervosa are related to starvation. Anorexia also includes emotional and behavioral issues involving an unrealistic perception of body weight and an extremely strong fear of gaining weight or becoming fat. . . .