First of all, let's clarify what is meant by “green tea”. It is an oriental beverage obtained by infusing the leaves of the Camellia sinensis plant. What distinguishes it from other types of tea is the absence of fermentation (the leaves are harvested very young) and the heat stabilization process it undergoes. It is in fact roasted or steamed to inhibit oxidation and preserve its characteristic green colour.
Properties of Green Tea
A cup of green tea contains:
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water
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trace elements important for the human body such as iron, magnesium, zinc, and sodium
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numerous vitamins such as C, B1, B2, B3, and B6
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high amounts of polyphenols, particularly Epigallocatechin gallate. This substance is present in quantities 10 times higher than those found in black tea
Health Benefits of Green Tea
Scientific research on green tea is very active, and today it appears to have confirmed the numerous benefits of the infusion.
First of all, thanks to the presence of Epigallocatechin gallate, this beverage strengthens antioxidant defences, reducing tissue ageing and the onset of arteriosclerosis. It seems that cell protection also occurs in an anti-tumour perspective: regular consumption of green tea could prevent the development of cancerous formations over time.
Green tea is also a panacea for the cardiovascular, respiratory, and neurological systems. It combats hypertension, osteoporosis, and urinary tract infections. It increases metabolism and helps fight water retention (therefore, it’s an excellent ally for weight loss!). In short, it is an extremely useful beverage for overall health and well-being.
At this point, however, a doubt might arise: are there perhaps any contraindications to consider?
Does Green Tea Have Contraindications?
The answer to this question is “yes and no”. In a healthy individual, any issues related to the consumption of green tea are due more to excess than to the substance itself. This beverage contains caffeine: if you've drunk litres and litres of green tea, don't be surprised if you're feeling a bit jittery!