A new study estimates that 85 per cent of new drugs offer few if any new benefits while having the potential to cause serious harm due to toxicity or misuse.
The author of the research delivered a damning attack on 'Big Pharma' at a meeting of sociology experts in the US.
Professor Donald Light described the pharmaceutical industry as a 'market for lemons' - one in which the seller knows much more than the buyer about the product, and takes advantage of this fact.
'Sometimes drug companies hide or downplay information about serious side-effects of new drugs and overstate the drugs' benefits,' said Prof Light, a professor of comparative health policy at the University of Medicine and Dentistry in New Jersey, US.
Then, they spend two to three times more on marketing than on research to persuade doctors to prescribe these new drugs.
He alleged that the pharmaceutical industry owned companies in charge of drug testing and provided 'firewalls' of legal protection behind which information about dangers or lack of effectiveness could be be hidden.
TVNL Comment: See how long it takes for this professor to die.
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