Tea, a beverage made from steeping parts of the Camellia sinensis plant or other herbs in water, is a popular drink worldwide. If you are trying to lower your cholesterol levels naturally, green tea is a good starting place- but other types may also help. True teas come from the Camellia sinensis plant.Types of true tea including green tea, white tea, oolong tea, and black tea are differentiated based on how they are manufactured. True tea is caffeinated.