Green tea and green tea extract are two popular dietary supplements that are known for their numerous health benefits. While both of these supplements are derived from the leaves of the Camellia sinensis plant, they differ in their composition and efficacy.
Green tea is made by steeping the leaves of the Camellia sinensis plant in hot water. This process extracts the water-soluble compounds present in the leaves, including polyphenols, flavonoids, and catechins. These compounds are known for their antioxidant and anti-inflammatory properties, which can help protect against a variety of chronic diseases, including cancer, heart disease, and diabetes.
Green tea extract, on the other hand, is a concentrated form of the active ingredients found in green tea. It is typically made by extracting the water-soluble compounds from the leaves of the Camellia sinensis plant using a solvent such as ethanol or water. This process results in a higher concentration of polyphenols, flavonoids, and catechins than is found in green tea.
So, what is the difference in efficacy between green tea and green tea extract? While both supplements have been shown to have health benefits, studies suggest that green tea extract may be more effective than green tea alone. This is because the higher concentration of active ingredients in green tea extract allows for a greater biological effect.
For example, a study published in the Journal of Nutrition found that taking green tea extract for 12 weeks led to significant reductions in body weight, body mass index, and waist circumference compared to a placebo. Another study published in the Journal of the American College of Nutrition found that green tea extract was more effective than green tea alone at reducing inflammation and oxidative stress in overweight women.
However, it is important to note that green tea extract may also have some potential side effects. The high concentration of active ingredients can cause stomach upset, nausea, and even liver damage in some individuals.
In conclusion, while both green tea and green tea extract have health benefits, studies suggest that green tea extract may be more effective due to its higher concentration of active ingredients. However, it is important to use caution when taking any new dietary supplement and to talk to your healthcare provider before starting any new regimen.