Virtually all of the victims whose deaths are falsely labeled as due to heroin overdose, moreover, are addicts who have already developed a tolerance for opiates--- and even enormous amounts of morphine or heroin do not kill addicts. In the Philadelphia study of the 1920s, for example, some addicts reported using 28 grains (1,680 milligrams) of morphine or heroin per day. 19 This is forty times the usual New York City daily dose. In one Philadelphia experiment, 1,800 milligrams of morphine were injected into an addict over a two-and-a-half-hour period. This vast dose didn't even make him sick. 20
Nor does a sudden increase in dosage produce significant side effects, much less death, among addicts. In the Philadelphia study, three addicts were given six, seven, and nine times their customary doses--- "mainlined." Far from causing death, the drug "resulted in insignificant changes in the pulse and respiration rates, electrocardiogram, chemical studies of the blood, and the behavior of the addict." 21 The addicts didn't even become drowsy. 22
Recent studies at the Rockefeller Hospital in New York City, under the direction of Dr. Vincent P. Dole, have confirmed the remarkable resistance of addicts to overdose. Addicts receiving daily maintenance doses of 40 milligrams to 80 milligrams of methadone, a synthetic narcotic (see Chapter 14), were given as much as 200 milligrams of unadulterated heroin in a single intravenous injection. They "bad no change in respiratory center or any other vital organs." 23
. . .
At some point in the history of heroin addiction, probably in the early 1940s, the custom arose among coroners and medical examiners of labeling as "heroin overdose" all deaths among heroin addicts the true cause of which could not be determined. These "overdose" determinations rested on only two findings: (1) that the victim was a heroin addict who "shot up" prior to his death; and (2) that there was no evidence of suicide, violence, infection, or other natural cause. 24 No evidence that the victim had taken a large dose was required to warrant a finding of death from overdose. This curious custom continues today. Thus, in common coroner and medical examiner parlance, "death from heroin overdose" is synonymous with "death from unknown causes after injecting heroin."
During the 1940s, this custom of convenience did little apparent harm. Most deaths among heroin addicts were due to tetanus, bacterial endocarditis, tuberculosis, and other infections, to violence, or to suicide, and they were properly labeled as such by coroners and medical examiners. It was only an occasional death which baffled the medical examiner, and which was therefore signed out as due to "overdose." But, beginning about 1943, a strange new kind of death began to make its appearance among heroin addicts. 25 The cause of this new kind of death was not known, and remains unknown today--- though it is now quite common.
A striking feature of this mysterious new mode of death is its suddenness. Instead of occurring after one or more hours of lethargy, stupor, and coma, as in true overdose cases, death occurs within a few minutes or less--- perhaps only a few seconds after the drug is injected. Indeed, "collapse and death are so rapid," one authority reports, "that the syringe was found in the vein of the victim or on the floor after having dropped out of the vein, and the tourniquet was still in place on the arm." 26 This explains in part why nalorphine and other narcotic antagonists, highly effective antidotes in true opiate overdose cases, are useless in the cases falsely labeled overdose.
An even more striking feature of these mysterious deaths is a sudden and massive flooding of the lungs with fluid: pulmonary edema. In many cases it is not even necessary to open the lungs or X-ray them to find the edema; "an abundance of partly dried frothy white edema fluid [is seen] oozing from the nostrils or mouth" 27 when the body is first found. Neither of these features suggests overdose--- but since "overdose" has come to be a synonym for "cause unknown," and since the cause of these sudden deaths characterized by lung edema is unknown, they are lumped under the "overdose" rubric.
Not all of the deaths attributed to heroin overdose are necessarily characterized by suddenness and by massive pulmonary edema, but several studies have shown that a high proportion of all "overdose" deaths share these two characteristics. 28