Unlike most drugs, caffeine, or a derivative, is present in a number of beverages including coffee, tea, cocoa and some sodas. But your caffeine intake may vary according to what you drink.
There is twice as much caffeine in a pound of tea as in a pound of coffee. But a pound of tea will yield 160 cups, whereas a pound of coffee, just 40. So a cup of tea only contains one half of the caffeine contained in a cup of coffee.
Sodas contain at least as much caffeine as tea, many contain more. And even chocolate is known to contain caffeine, albeit in trace amounts. Caffeine is one of a group of chemicals called xanthines, and thus is mildly diureticOne of a series of drugs which are used to promote urination in the patient. They are given to reduce the volume of non-cellular fluids, usually in the treatment of hypertension, congestive heart failure and edema.
Whether the drug falls into the category of thiazides, mercurials, loop diuretics, carbonic anhydrase inhibitors, thiazide-like diuretics or potassium-sparing diuretics will depend on the condition of the patient.
Visit our comprehensive glossary for more pregnancy terms and definitions., although not enough to warrant medical use.
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Caffeine is a stimulant of the central nervous systemAn intricate network of structures that runs extensively throughout the body and activates, coordinates and controls all functions of the body.
The nervous system consists of two parts, the central nervous system and the peripheral nervous system. The central nervous system is composed of the brain and the spinal cord. The peripheral nervous system includes the cranial nerves and spinal nerves.
Afferent fibers carry sensory impulses to the central nervous system. Efferent fibers carry motor impulses in the form of electrical energy from the central nervous system to the muscles and other organs.
Somatic fibers are those associated with the bones, muscles and the skin. Visceral fibers are those associated with the internal organs, blood vessels and mucus membrane. All of the functions are coordinated by a network of tiny structures including neurons, axons, dendrites and ganglia.
Visit our comprehensive glossary for more pregnancy terms and definitions.. The effects of the drug vary from person to person, but usually about two cups of coffee is enough to generate a response in most people. Unusually high doses of caffeine will lead to restlessness, sleeplessness, trembling, palpitations and diarrhea.
Researchers are undecided on the whether caffeine affects pregnant mothers. Various studies have reported conflicting results about an increase in the rate of miscarriage due to caffeine, but there is currently no definitive answer. Studies do agree that caffeine can cross the placentaThe placenta is a large disk shaped membrane responsible for providing nourishment to the fetus during pregnancy. It consists of three parts, the fetal part made up from the chorion membrane surrounding the fetus, the maternal part, formed from the decidua basalis layer of the uterine lining, and the intervillous space between the two plates. It is connected to the fetus by the umbilical cord and consists of tissue from both the mother and the embryo.
Its function is complex. It has been described as a simple organ that combines the functions of a kidney-dialysis machine, heart and lung machine and intravenous drip. It consists of enormous numbers of blood vessel branches that permit the exchange of nutrition and oxygen, from the mother's bloodstream to the fetus and the removal of wastes to the mother to be excreted. The placenta's remarkable quality is that it does so without the blood of the mother mixing with that of the baby.
It also is responsible for the production of vital hormones including, estrogen, progesterone, and human chorionic gonadotropin. After birth, the placenta is delivered, and is sometimes referred to as the afterbirth.
Visit our comprehensive glossary for more pregnancy terms and definitions. to the baby. The chemical can affect the calcium metabolism of the fetus and may increase the chance of respiratory problems in the newborn. It is generally agreed that moderate caffeine intake during pregnancy is acceptable and recommendations usually limit consumption each day to three cups of coffee, five cans of soda or six cups of tea.
There are of course alternatives. Many coffee shops serve high quality decaffeinated coffees, teas and even dark roasted espresso varieties. But why not take this opportunity to explore a wider range of beverages. Freshly squeezed fruit juices have always been popular, and mixed fruit blended with ice can make a delicious thick smoothie. Many herbal and green teas are readily available and have a rich history of healthful properties. Becoming knowlegeable about them can be a passion in it's own right. Hot steamed milk flavored with syrups can be comforting during the Winter and those same syrups can be mixed with sparkling water to make refreshing Summer drinks.
There is no evidence of caffeine being the cause of congenital birth defects. Caffeine can pass to your breast milk and may be the cause of irritability in your baby. Infants metabolize caffeine slower that adults and so it can accumulate in the body of your baby.
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