Black tea, also known as black leaf tea and English tea, is an infusion made from the aged stems and leaves of a Camellia sinesis plant. It contains a small amount of caffeine, which gives the tea its stimulant properties.

More people favor black tea over other variations of tea because while other teas quickly lose their flavor when put in storage for a long time, black tea retains all its flavor for up to several years. It is often consumed alone, or combined with other ingredients to make it more flavorable.

This type of tea is helpful when it comes to raising alertness and increasing memory, information processing and learning skills. Black leaf tea is also handy in treating low blood pressure and headaches. It can prevent the onset of heart diseases like heart attacks and atherosclerosis. It can alleviate the symptoms and complications of Parkinson’s disease and reduce the risks of developing cancers in the breast, ovaries, lungs, colon and stomach.

The tea is often recommended for people with type 2 diabetes and various stomach disorders because it helps relieve diarrhea and vomiting. It is also an effective diuretic and can help prevent kidney stones.

Although tea is all-natural, it can have side-effects from over consumption due to its caffeine content. Caffeine overdose side effects include nervousness dizziness, sleep problems and confusion. People who are anemic, have anxiety disorders, bleeding problems, preexisting heart conditions, diabetes and glaucoma are cautioned against drinking black tea and must get their doctor’s advise first before consuming it.