Dconsidered for millennia an elixir of well-being, green tea it’s much more than just a hot drink. Obtained from the leaves of Camellia sinensis – the same shrub they also come from black, white and oolong tea – green tea owes its fame to non-fermented process with which it is produced: this process allows you to keep its active substances intactespecially precious ones polyphenols. Cultivated for centuries in countries such as India and Chinatoday accompanies the habits of those who want to take care of their body in a conscious way. But if the benefits are famous, less known are its potential pitfalls: incorrect consumption can in fact transform this “healthy” habit into a riskespecially for those who hire medications or have liver problems.
The best known benefits of green tea
The combination of catechins and caffeine of green tea can moderately increase the thermogenesis, the process by which the body burns energy and calories to produce heat. This explains why green tea is often associated with weight management. It is a slight but real support, but should be considered as part of a larger package that includes balanced nutrition and movement. The result is concrete but measured support: not a magic wandbut a natural ally in the routine of those who want to feel lighter.
Heart and blood pressure: green tea is a friend of blood vessels
Several studies indicate that the Green tea can help maintain healthier cholesterol levels and support the elasticity of blood vessels. These effects, together with the antioxidant action, could contribute to reduce some risk factors linked to stroke and coronary heart disease. It is not a cure, but an extra help within a balanced lifestyle. In this way, green tea indirectly contributes to smoother blood flow and to a more protected heart.
The right ally to reduce the damage of smoking
Thanks to its antioxidants, green tea also shows a potential protective effect on the respiratory system, especially in those exposed to irritating factors such as smoking. The catechins they can help reduce the impact of oxidative stress on the airways.
The power of polyphenols against aging
Green tea is very rich in polyphenols, in particularEGCGone of the most powerful natural antioxidants. These compounds help neutralize free radicals, contributing to the protection of cells and slowing down the processes of premature aging. It is one of the main reasons why green tea is considered a functional drink.
The side effects of green tea
Despite its reputation as a natural elixir, green tea is not without side effects, especially when consumed in large quantities or in the form of concentrated extracts. There caffeine can cause insomnia, nervousness, tachycardia and tremorsWhile the tannins they can irritate the gastric mucosa and reduce iron absorptionproving problematic for those who suffer from anemia, gastritis or reflux.
Extracts, if taken in excess, can also have impacts on liver or thyroid. The rule remains simple: moderation and common sense. Reasonable consumption, within a healthy lifestyle, makes green tea a valid wellness companion, but always with the advice of a professional when necessary.
Incompatible with some drugs
Green tea can interact with numerous drugs, reducing their effectiveness or increasing their toxicity: this is the case, for example, of anticoagulantsof some antihypertensives like nadolol, gods oral contraceptives and various chemotherapy. For this reason, moderate and conscious consumption is essential, especially in the presence of pharmacological therapies or specific medical conditions.
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