The Guardian view on peptides: Robert F Kennedy Jr would leave public health policy to the hucksters | Editorial

The US health secretary says he is a big fan of peptides. Many are promising drugs, but the only way to know their utility is proper clinical trials Robert F Kennedy Jr, the US health secretary, is a chaotic person, but his Make America Healthy Again (Maha) agenda tends to follow a predictable logic. Large-scale, mandatory public health interventions – such as childhood vaccine requirements – are generally treated with suspicion and undermined. Personal choice – to drink unpasteurised milk, for example – is to be unleashed, and unburdened by regulation. In theory, Maha promises freedom and autonomy; in practice it tends to replace the precautionary principle with exhortations for individuals to “do your own research”, and sidelines scientific expertise in favour of “wellness” hucksters and profiteers. This is particularly obvious in Mr Kennedy’s recent claims that he will open up the sale of “about 14” injectable peptide drugs to the public. Peptides are molecules often used by our bodies for sending signals – so there are many kinds of peptides, and the safety and efficacy of each is a separate question. The widely used “weight-loss jab” drugs are peptides but so are the toxic com