Rapid weight loss and vomiting in dogs
Vitamin A deficiency can occur as either a primary or a secondary deficiency. Alpha-carotene and gamma-carotene also have a single retinyl group, which give them some vitamin activity. Early weaning from breastmilk can also increase the risk of vitamin A deficiency. S. Vitamin A is a fat-soluble vitamin and depends on micellar solubilization for dispersion into the small intestine, which results in poor use of vitamin A from low-fat diets. Nausea or vomiting one to eight hours after a meal may also indicate food poisoning. This article is about the family of vitamers. When to Call the Doctor About Nausea and Vomiting. Adults have a lower risk of becoming dehydrated, because they can usually detect the symptoms of dehydration (such as increased thirst and dry lips or mouth ). Future of U. The causes of vomiting differ according to age. S. Zinc deficiency can also impair absorption, transport, and metabolism of vitamin A because it is essential for the synthesis of the vitamin A transport proteins and as the cofactor in conversion of retinol to retinal. Gastroparesis or slow stomach emptying (a condition that can be seen in people with diabetes ). Health Care: What You Need to Know. Asprin: The Wonder Drug in Your Medicine Cabinet. Vitamin A can be found in two principal forms in foods. Eating Hot Peppers May Help You Live Longer. Retinol, the form of vitamin A absorbed when eating animal food sources, is a yellow, fat-soluble substance. Since the pure alcohol form is unstable, the vitamin is found in tissues in a form of retinyl ester. 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 and vomiting are not diseases, but they are symptoms of many conditions such as. Adults caring for sick children need to be aware of these visible signs of dehydration: dry lips and mouth, sunken eyes, and rapid breathing or pulse.
In foods of animal origin, the major form of vitamin A is an ester, primarily retinyl palmitate, which is converted to retinol (chemically an alcohol ) in the small intestine. Secondary vitamin A deficiency is associated with chronic malabsorption of lipids, impaired bile production and release, and chronic exposure to oxidants, such as cigarette smoke, and chronic alcoholism. Nausea is an uneasiness of the stomach that often comes before vomiting. The retinol form functions as a storage form of the vitamin, and can be converted to and from its visually active aldehyde form, retinal. A primary vitamin A deficiency occurs among children and adults who do not consume an adequate intake of provitamin A carotenoids from fruits and vegetables or preformed vitamin A from animal and dairy products. But young children have a greater risk of becoming dehydrated, especially if they also have diarrhea, because they often are unable to communicate symptoms of dehydration. The carotenoid beta- cryptoxanthin possesses an ionone group and has vitamin activity in humans. Ingestion of toxins or excessive amounts of alcohol. Study Casts Doubt on Common Morning Sickness Drug. However, certain food- borne bacteria, such as salmonella, can take longer to produce symptoms. Health Care: What You Need to Know. None of the other carotenes have vitamin activity. Some examples of serious conditions that may result in nausea or vomiting include concussions, meningitis (infection of the membrane linings of the brain ), intestinal blockage, appendicitis, and brain tumors. Chemical structure of retinol, one of the major forms of vitamin A. The timing of the nausea or vomiting can indicate the cause. Usually, vomiting is harmless, but it can be a sign of a more serious illness. Future of U. All forms of vitamin A have a beta-ionone ring to which an isoprenoid chain is attached, called a retinyl group. For the form usually used as a supplement, see Retinol. For children, it is common for vomiting to occur from a viral infection, food poisoning, milk allergy, motion sickness, overeating or feeding, coughing, or blocked intestines and illnesses in which the child has a high fever. Recurrent vomiting in pregnancy can lead to a serious condition called hyperemesis gravidarum in which the mother may develop fluid and mineral imbalances that can endanger her life or that of her unborn child.
