Sample verdict
Does a genetic test pick the best diet for weight loss?
AnswerMYTH CertaintyModerate FirmnessStable
The 'DNA diet' tests available today do not predict which diet makes you lose the most weight.
NOT supported: the 'DNA diet' genetic tests available today do not predict which diet loses more weight. Two randomized trials designed for this found no advantage in matching the diet to the genotype — but this does not mean genetics is irrelevant to health, rather that these commercial tests do not deliver what they promise
This is a sample: the answer to a real claim in our base. The studies behind the answer, and the appraisal of each one, come with the plan.