Study Reveals Impact of Time-Restricted Eating and Calorie Restriction on Sex Hormones
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A recent study published in the European Journal of Clinical Nutrition evaluated the effects of time-restricted eating (TRE) and caloric restriction (CR) on sex hormones.
Time-restricted eating is a weight loss intervention, with a reduced eating window (4–10 hours) and fasting for the remaining time with energy-free beverages.
Despite the health benefits of time-restricted eating, there have been concerns about its impact on sex hormones. Some studies claim that time-restricted eating may negatively affect estrogen levels, which might lead to irregularities in the menstrual cycle and fertility issues. Similarly, research on males claims that time-restricted eating might reduce testosterone, muscle mass, and libido. However, the impact of time-restricted eating on sex hormones is largely unknown and requires further investigation.
For the study, researchers conducted a 12-month study to compare the effects of time-restricted eating (TRE) and calorie restriction (CR) on reproductive hormones in males and females. Participants were divided into three groups: caloric restriction, time-restricted eating, and control. The study had two phases: weight loss and maintenance, each lasting six months.
TRE participants ate freely from 12 PM to 8 PM and fasted until noon, later extending their eating window to 10 AM to 8 PM in the maintenance phase. The caloric restriction group reduced their daily energy intake by 25% initially, then consumed their calculated energy needs. The control group maintained their usual diet and exercise routines.
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