Autism spectrum disorders

Cannabis use in pregnancy linked to a greater risk of autism

In the largest study of its kind, Ottawa researchers found that children whose mothers reported using cannabis during pregnancy were at greater risk of autism. The incidence of autism was 4 per 1000 person-years among children ...

Obstetrics & gynaecology

Mapping changes to metabolic pathways during pregnancy

A large team of ob-gyns, regenerative medicine and fetal development specialists and metabolic researchers in China has tested macaques and mapped many of the changes that happen to metabolic pathways in primates during pregnancy.

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Pregnancy

Pregnancy (latin graviditas) is the carrying of one or more offspring, known as a fetus or embryo, inside the uterus of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Obstetrics is the surgical field that studies and cares for high risk pregnancy. Midwifery is the non-surgical field that cares for pregnancy and pregnant women.

Childbirth usually occurs about 38 weeks after conception; i.e., approximately 40 weeks from the last normal menstrual period (LNMP) in humans. The World Health Organization defines normal term for delivery as between 37 weeks and 42 weeks. The calculation of this date involves the assumption of a regular 28-day period.

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