Except for plain water, tea is the world's most widely-consumed drink. Although expectant mothers should avoid green tea, the National Institutes of Health consider moderate amounts of black tea safe for pregnant and nursing women.

Tea is appreciated all over the world for its qualities as a mild physical stimulant, and its psychological value as a soothing, relaxing beverage for its aficionados. It looms large in the traditional medicine and folklore of Asia, and modern medicine is beginning to take an interest in its potential healing ability.

Gastritis is inflammation of your stomach's lining. The Better Health Channel website states that the principal cause of gastritis is infection with the Helicobacter pylori bacterium, although other factors -- alcohol consumption, certain prescription drugs -- may also cause this health problem.

Tea, whether it's black, green, white or any other color, is a wise beverage choice because it offers numerous health benefits. But tea also contains tannins, which can be good for certain reasons, but the compounds aren't always beneficial.

If you love waking up to a cup of hot tea, keep on sipping. This beverage is high in antioxidants, and research shows it may help prevent heart disease, build stronger bones and even improve your mood, according to Harvard Health Publications. Tea isn't perfect, however, and does sometimes come with side effects.

The herb chamomile has a role in traditional and alternative health practices. Two types of this plant are used to make teas. German chamomile and Roman or English chamomile each purport to offer relief for digestive problems.

Most adults function well on around seven to eight hours of sleep per night. On evenings when sleep eludes you, it is best to abandon your bed, flip on the television or pick up a book, suggests the National Institute of Neurological Disorders and Stroke.

An electrolyte mineral that helps regulate your heartbeat and balance the fluid levels in your body, potassium can help offset the adverse effects of consuming too much sodium. Potassium is readily available in many plant foods, including tea, and healthy adults need about 4,700 milligrams daily.

Herbal teas are natural remedies that are made by steeping parts of the root, plant or flower of the herb in boiling water. Many herbs are relatively benign when taken in moderate consumption, and can be safely combined with other herbs that have similar effects, such as chamomile and peppermint teas.

When your physician orders certain tests, you may need to fast for several hours prior to the test assure accuracy. Nutrients in the foods you eat and beverages you drink can influence test results. For some tests, even the stimulation of digestion enzymes interferes with test results.

Having an upset stomach can be a mild, temporary distraction or a very painful experience, depending on the severity of the symptoms. While some teas, such as those containing caffeine, can cause or exacerbate the symptoms, many herbal teas can offer relief.

Tea is a widely enjoyed beverage in many different cultures. This versatile drink can be served in a variety of flavors, both hot and cold. Several varieties of tea, particularly green tea, may impart health benefits for some conditions.