Overtreatment with drugs kills many people, and the death rate is increasing. It is therefore strange that we have allowed this long-lasting drug pandemic to continue, and even more so because most of the drug deaths are easily preventable.
In 2013, I estimated that our prescription drugs are the third leading cause of death after heart disease and cancer,1 and in 2015, that psychiatric drugs alone are also the third leading cause of death.2 However, in the US, it is commonly stated that our drugs are “only” the fourth leading cause of death.3,4 This estimate was derived from a 1998 meta-analysis of 39 US studies where monitors recorded all adverse drug reactions that occurred while the patients were in hospital, or which were the reason for hospital admission.5
This methodology clearly underestimates drug deaths. Most people who are killed by their drugs die outside hospitals, and the time people spent in hospitals was only 11 days on average in the meta-analysis.5 Moreover, the meta-analysis only included patients who died from drugs that were properly prescribed, not those who died as a result of errors in drug administration, noncompliance, overdose, or drug abuse, and not deaths where the adverse drug reaction was only possible.5
Many people die because of errors, e.g. simultaneous use of contraindicated drugs, and many possible drug deaths are real. Moreover, most of the included studies are very old, the median publication year being 1973, and drug deaths have increased dramatically over the last 50 years. As an example, 37,309 drug deaths were reported to the FDA in 2006 and 123,927 ten years later, which is 3.3 times as many.6
In hospital records and coroners’ reports, deaths linked to prescription drugs are often considered to be from natural or unknown causes. This misconception is particularly common for deaths caused by psychiatric drugs.2,7 Even when young patients with schizophrenia suddenly drop dead, it is called a natural death. But it is not natural to die young and it is well known that neuroleptics can cause lethal heart arrhythmias.
Many people die from the drugs they take without raising any suspicion that it could be an adverse drug effect. Depression drugs kill many people, mainly among the elderly, because they can cause orthostatic hypotension, sedation, confusion, and dizziness. The drugs double the risk of falls and hip fractures in a dose-dependent manner,8,9 and within one year after a hip fracture, about one-fifth of the patients will have died. As elderly people often fall anyway, it is not possible to know if such deaths are drug deaths.
Another example of unrecognised drug deaths is provided by non-steroidal anti-inflammatory drugs (NSAIDs). They have killed hundreds of thousands of people,1 mainly through heart attacks and bleeding stomach ulcers, but these deaths are unlikely to be coded as adverse drug reactions, as such deaths also occur in patients who do not take the drugs.
The 1998 US meta-analysis estimated that 106,000 patients die every year in hospital because of adverse drug effects (a 0.32% death rate).5 A carefully done Norwegian study examined 732 deaths that occurred in a two-year period ending in 1995 at a department of internal medicine, and it found that there were 9.5 drug deaths per 1,000 patients (a 1% death rate).10 This is a much more reliable estimate, as drug deaths have increased markedly. If we apply this estimate to the US, we get 315,000 annual drug deaths in hospitals. A review of four newer studies, from 2008 to 2011, estimated that there were over 400,000 drug deaths in US hospitals.11
Drug usage is now so common that newborns in 2019 could be expected to take prescription drugs for roughly half their lives in the US.12 Moreover, polypharmacy has been increasing.12
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