Stomach fat (belly fat, abdominal fat)
fat tissue deposited in the midsection of the body around the abdominal organs. Studies have shown that an increased amount of belly fat is associated with an increased risk of heart disease, diabetes, some cancers, and early death. Two measurements, waist circumference and waist-to-hip ratio, have been used by researchers to identify those with increased belly fat.
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- Stomach flu
A gastrointestinal illness caused by a microorganism. Stomach flu is not related to the influenza (flu) virus.
- Stomach paralysis
Formally called gastroparesis, this is a medical condition in which the muscle of the stomach is paralyzed by a disease of either the stomach muscle itself or the nerves controlling the muscle. As a consequence, food and secretions do not empty normally from the stomach, and there is nausea and vomiting. Gastroparesis may be associated […]
- Stomach, Pavlov
A pouch fashioned surgically from part of the stomach (but isolated from the rest of the stomach) that opens via a fistula (canal) on to the abdominal wall. At different points along the dogs’ digestive tracts, the Russian physiologist Ivan Petrovich Pavlov (1848-1936) surgically created pockets (“Pavlov pouches”) from which he could obtain secretions, the […]
- Stomatitis, Vincent
This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead tissue from the mouth and throat due to the spread of infection from the gums. Certain germs (including fusiform bacteria and spirochetes) have been thought to be involved, but the full story behind this long-known disease is still not […]
- Stone, kidney
A stone in the kidney or a stone that originates in the kidney but has passed lower down in the urinary tract. Kidney stones are a common cause of blood in the urine and pain in the abdomen, flank, or groin. The development of kidney stones is related to decreased urine volume or to increased […]