Medical studies are almost always bogus

How many times have you encountered a study — on, say, weight loss — that trumpeted one fad, only to see another study discrediting it a week later?

That’s because many medical studies are junk. It’s an open secret in the research community, and it even has a name: “the reproducibility crisis.”

For any study to have legitimacy, it must be replicated, yet only half of medical studies celebrated in newspapers hold water under serious follow-up scrutiny — and about two-thirds of the “sexiest” cutting-edge reports, including the discovery of new genes linked to obesity or mental illness, are later “disconfirmed.”

Though erring is a key part of the scientific process, this level of failure slows scientific progress, wastes time and resources and costs taxpayers excesses of $28 billion a year, writes NPR science correspondent Richard Harris in his book “Rigor Mortis: How Sloppy Science Creates Worthless Cures, Crushes Hope, and Wastes Billions” (Basic Books).

“When you read something, take it with a grain of salt,” Harris tells The Post. “Even the best science can be misleading, and often what you’re reading is not the best science.” ...