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The meta-analysis is interesting, but without the patient perspective and lived experience, it only tells part of the story
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Fortunately both came back positive
While some initial cellular changes may occur quickly, most studies show that it takes about 3 to 4 weeks of consistent daily supplementation to see a significant rise in blood glutathione levels
A 2021 study published in the New England Journal of Medicine (Wilding et al., NEJM, 2021) found that semaglutide 2.4 mg produced an average weight loss of approximately 14.9% of body weight over 68 weeks in adults with obesity, compared to 2.4% in the placebo group
However, a 2025 study found that people who used weight-loss medication regained weight more rapidly, with an average monthly weight regain of 0.4kg compared with 0.1kg in those who followed behavioural weight management programmes
