Why Physical Activity Does Little to Control Weight

There are things we know we don’t know and things we know we know; but sometimes the things we know we know aren’t so. An article by Herman Pontzer in the February 2017 issue of Scientific American, “The Exercise Paradox,” describes new research findings that challenge our conventional wisdom about diet, exercise, and weight loss.

Update: Homeopathy in Brazilian Scientific American

Last week I wrote about a regrettable piece on homeopathy that was published in Scientific American Brasil.  There have been gratifying developments. Within hours, the editor in chief of Scientific American, Mariette DiChristina, appeared in the Comments. She said that Scientific American does not condone the pseudoscience of homeopathy, that the piece clearly should not have

Scientific American Declares Homeopathy Indispensable to Planet and Human Health

I recently received an e-mail from one of SBM’s readers in Brazil, Felipe Nogueira Barbara de Oliveira, a PhD candidate in Medical Science who holds an MS in Computer Science and is who is trying to promote critical thinking and scientific medicine in his country. He sent me a jpeg copy of a short piece

Misleading Ads in Scientific American

I’m frequently asked, “Is what that ad says really true?” Three recent inquiries have been about products advertised in Scientific American. An ad may acquire a certain cachet by appearing in a prestigious science magazine, but that doesn’t mean much. Scientific American’s editorial standards apparently don’t extend to its advertising department. I remain skeptical about