The Journal of Nutrition, Health & Aging reports that three cups of green tea per day may help elderly people with metabolic syndrome lose weight.
Scientists from the Pontifical Catholic University of Rio Grande do Sul (PUCRS) report that green tea consumption was linked to an average loss of 1.2 kg (2.6 lbs) over a 60-day period and a reduction in waist circumference of about 2 cm (0.8 in).
The potential benefits of green tea may be related to the ability of the polyphenols in the beverage to increase thermogenesis or via an alternate mechanism of appetite suppression.
Other benefits of green tea include reducing the risk of Alzheimer’s and improving cardiovascular and oral health.
The new study involved elderly people with metabolic syndrome (MetS). MetS refers to a cluster of conditions, including high blood pressure, raised blood sugar level, excess body fat around the waist or low HDL (the “good” cholesterol) and increased blood triglycerides—all of which are known to significantly increase the risk for heart disease, stroke and diabetes.
Forty-five elderly people with MetS were randomly assigned to one of two groups: The first group was required to consume three cups of green tea per day made from 1.0 g sachets, and the other group was instructed not to make changes to their lifestyle.
After 60 days of intervention, the researchers report that the green tea group displayed “statistically significant weight loss” from an average of 71.5 kg (157.6 lbs) at the start of the study to 70.3 kg (154.9 lbs) at the end. No significant changes were observed in the control group.
In addition, both groups displayed significant decreases in BMI and waist circumference, but the decreases were greater in the green tea group, the researchers said.