Green tea has been a popular beverage for centuries and has been extensively researched for its health benefits. In this blog, we will explore the many benefits of drinking green tea, backed by scientific evidence.
Aids in weight loss
Green tea contains catechins, which are natural antioxidants that are believed to boost metabolism and increase fat burning. A meta-analysis of 11 studies showed that green tea consumption can result in significant weight loss and a reduction in body mass index (BMI) (1). Another study found that consuming green tea for 12 weeks resulted in a significant reduction in body fat percentage and waist circumference (2).
Improves brain function
Green tea contains caffeine and an amino acid called L-theanine, which have a synergistic effect on brain function. Caffeine is a stimulant that can improve mood, alertness, and cognitive performance. L-theanine has a calming effect and can reduce anxiety. A review of studies found that green tea consumption can improve cognitive function, attention, and memory (3).
Lowers risk of certain cancers
Green tea contains polyphenols, which are natural compounds with powerful antioxidant properties. These polyphenols, particularly epigallocatechin gallate (EGCG), have been shown to inhibit the growth of cancer cells and reduce the risk of certain cancers, such as breast, prostate, and colorectal cancer (4).
Reduces risk of heart disease
Green tea has been shown to have a beneficial effect on several risk factors for heart disease, including blood pressure, cholesterol levels, and oxidative stress. A meta-analysis of 14 randomized controlled trials found that green tea consumption resulted in a significant reduction in both systolic and diastolic blood pressure (5). Another meta-analysis of 13 randomized controlled trials showed that green tea consumption significantly reduced LDL (bad) cholesterol levels (6).
Improves dental health
Green tea contains polyphenols, which have antimicrobial properties that can help to prevent the growth of bacteria in the mouth. A study found that rinsing with green tea extract for 3 minutes significantly reduced plaque formation and improved gum health (7).
Boosts immune system
Green tea contains polyphenols and catechins, which have been shown to have immunomodulatory effects, meaning they can regulate the immune system. A study found that green tea consumption for 4 weeks significantly increased the activity of natural killer cells, which are an important part of the immune system (8).
Enhances skin health
Green tea contains antioxidants that can help to protect the skin from damage caused by UV radiation and other environmental factors. A study found that applying a green tea extract to the skin for 8 weeks resulted in a significant improvement in skin elasticity and hydration (9).
In conclusion, green tea is a healthy beverage with numerous benefits, backed by scientific evidence. Regular consumption of green tea can aid in weight loss, improve brain function, lower the risk of certain cancers and heart disease, enhance dental health, boost the immune system, and improve skin health. So, it’s a great idea to incorporate green tea into your daily routine to enjoy its many benefits.
References:
Hursel R, Viechtbauer W, Westerterp-Plantenga MS. The effects of green tea on weight loss and weight maintenance: a meta-analysis. Int J Obes (Lond). 2009 Sep;33(9):956-61.
Nagao T, Hase T, Tokimitsu I. A green tea extract high in catechins reduces body fat and cardiovascular risks in humans. Obesity (Silver Spring). 2007 Jun;15(6):1473-83. Dietz C, Dekker M. Effect of green tea phyto