The results of this study indicated that of the 17.3% who said that they regularly used substances, 40% said that they used more than one substance, but 3.9% specifically reported using three or more substances, indicating that there is a lot of overlap in the use of different substances. The researchers compared their results to earlier German studies and found that substance dependence seems to be increasing, at least in Germany. Gender differences
Women and men differ in various ways when it comes to addictions. Research has shown that women are more likely to be polysubstance dependent. It has been noted that a larger percentage of women use licit (legal) substances such as tranquilizers, sedatives, and stimulants. On the other hand, men are more likely to use illicit (illegal) substances such as cocaine, methamphetamine, and other illicit substances. Research suggests that women addicts more frequently have a family history of substance use. When asked to describe their onset of addictions, women more frequently describe their addiction as sudden where as men describe them as gradual. Females have a higher percentage of fatty tissues and a lower percentage of body water than men. Therefore, women absorb substances more slowly. This means these substances are at a higher concentration in a womans bloodstream. Female addicts are known to be at greater risk for fatty liver disease, hypertension, anemia, and other disorders. See also
Self-medication

References
External links

A great resource for more information: http://www.nida.nih.gov/nidahome.html
The birth and mortality numbers from the CBS include all livebirths, regardless of gestational duration, and all stillbirths from 24 weeks of gestation and onwards. In the Perinatal Registry, gestational duration of both liveborn and stillborn children is available. They register all liveborn and stillborn children from 22, 24 or 28 weeks of gestation and onwards (dependent on the report: fetal, neonatal or perinatal mortality). Therefore, data from these institutions on (still)births can not simply be compared one-on-one. United Kingdom
The registration of stillbirths has been required in England and Wales from 1927 and in Scotland from 1939 but is not required in Northern Ireland. Sometimes a pregnancy is terminated deliberately during a late phase, for example due to congenital anomaly. UK law requires these procedures to be registered as "stillbirths". England and Wales
For the purposes of the Births and Deaths Registration Act 1926 (as amended), section 12 contains the definition:"still-born" and "still-birth" shall apply to any child which has issued forth from its mother after the twenty fourth week of pregnancy and which did not at any time after being completely expelled from its mother, breathe or show any other signs of life.A similar definition is applied within the Births and Deaths Registration Act 1953 (as amended), contained in s.41. The above definitions apply within those Acts thus other legislation will not necessarily be in identical terms.