The pathogenesis of sarcopenia is complex and multifaceted: the chronic catabolic condition, increased energy expenditure, reduced appetite, side effects of multiple therapies, alterations in circulating levels of hormones, low protein synthesis, and the presence of ascites or portosystemic shunts are all factors contributing to muscle atrophy in cirrhotic patients [23]
Torres F, Gonzalez-Candia A, Montt C, et al
Take-home message: - Peptides and assorted experimental drugs, like TB-500 and MK-677, are being recommended by fitness influencers to grow bigger muscles, lose fat, and recover from injuries faster - These drugs, many of which are claimed to boost levels of growth hormone, were studied in rodents and very small groups of human volunteers before being abandoned for not being beneficial or for causing unacceptable side effects - They are banned by the World Anti-Doping Agency and appear to be illegal in Canada and the United States, but can be purchased online
Abstract Factors modulating cellular radiosensitivity can be of huge relevance considering the growing use of ionizing radiation in therapy and diagnosis
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