The tea leaf contains calcium, phosphorus, potassium, magnesium, iron, iodine, fluorine, and other vitamins very useful for humans. Tea is said to contain four times as much vitamin P (flavenoids) as citrus plants and twice as much caroten (pro-vitamin A) as carrots. It slakes thirst, enhances energy and capacity for work, and has a positive effect on the human nervous system. Tea helps one sweat and improves blood circulation. Historical sources...

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