Doctors slam calcium and vitamin D conflict of interest

Two New Zealand doctors have lambasted academics, advocacy organisations and companies that recommend calcium and vitamin D supplements to prevent or treat osteoporosis despite evidence that they don’t work.

They write in the BMJ that a focus on profit and vested interests over evidence-based research is fuelling this misguided advice.

Drs Andrew Grey and Mark Bolland from the University of Auckland argue that some prominent academics and specialist societies have undeclared commercial and