Suicide and homicide rates and fluoride.
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Biomedical subjects
Publications and source records attributed to D Lester.
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A theory was proposed to account for the appearance of suicide. The lack of immediate availability of the preferred means for killing oneself and the religious belief that suicide is an unacceptable action both serve to reduce the likelihood of suicide. This theory was tested and confirmed using an ecological analysis of the continental states of the USA. The two variables together accounted for 46 percent of the variation of the suicide rates of the states.
A study of self-poisoning in pregnant women showed that attempts at suicide were spread out over the three trimesters, with more in the second trimester, while those attempting abortion poisoned themselves in the first two trimesters. Women admitting suicidal intent in their self-poisonings frequently requested an abortion (33%) while those claiming, that the self-poisoning was an accident rarely requested an abortion (3%).
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The concept of "subcultures" is applied to depressed and suicidal teenagers. A case example is presented of a group of five teenagers, three of whom killed themselves. The characteristics of the group members are described in order to pinpoint the defining values of a teenage suicidal subculture.
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The present results fail to find an excess of deaths from suicide (and natural deaths and homicides) around the birthday. Thus there is no evidence for a "birthday blues" effect.
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The variation of suicide and homicide rates in the major standard metropolitan statistical areas of the United States was explored to see whether regional variations in temperature and precipitation could account for some of the variation. Controls for temperature eliminated the North-South variation in suicide rates, but not the North-South variation in homicide rates or the East-West variation in suicide rates. Only the correlation between precipitation and homicide rates survived controls for latitude and longitude.
A study of the various United States as of 1940 showed that suicide rates were higher and homicide rates were lower in states where the quality of life was higher. These findings support a hypothesis derived from Henry and Short's theory of suicide and homicide.
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