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There is ongoing debate about cardiovascular risks: some studies have suggested that testosterone treatment might be associated with a higher incidence of heart attack or stroke in older men, though definitive evidence is inconclusive

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However, the weight loss that comes from these injections is more likely to be a result of the changes in diet and exercise routines that people often adopt when they seek these treatments, rather than from the injections alone

This article covers the mechanistic differences that determine experimental outcomes, dosing considerations for research protocols, and what the existing clinical data actually supports versus what marketing claims suggest