The cost of weight loss injections (e.g., GLP-1 agonists like semaglutide) varies widely – typically €100–300 per month depending on country, insurance, and dosage. Can a DNA test help? Only to a limited extent. Some gene variants (e.g., FTO, MC4R) are associated with weight regulation, but their effect sizes are small and not specific to injection response. Lifestyle factors (diet, exercise) dominate. A DNA test might theoretically offer clues about metabolism or satiety, but there is no strong evidence that it can guide the choice or dose of weight loss injections. The evidence is mostly mechanistic or from GWAS with small effects. Be cautious of marketing claims: no genetic test replaces medical advice. Anyone considering weight loss injections should first have blood markers (glucose, liver enzymes) and overall health assessed by a doctor.
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