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Nausea and vomiting, known as morning sickness, occurs in 80% of pregnant women. [9] Although described as "morning sickness," pregnant women can experience this nausea any time of day or night. The exact cause of morning sickness remains unknown.
Morning sickness is very common among pregnant women, which argues in favor of its being a functional adaptation and against the idea that it is a pathology. Fetal vulnerability to toxins peaks at around 3 months, which is also the time of peak susceptibility to morning sickness.
Expecting women know to anticipate morning sickness, a potentially debilitating side effect that plagues 80% of pregnant women. But scientists haven’t been sure as to why the misery occurs ...
Most people who get pregnant develop a condition called morning sickness; some, like Catherine, Princess of Wales, and actress Amy Schumer, have such severe forms that they need to be hospitalized ...
Nausea or "morning sickness" is common during early pregnancy but may occasionally continue into the second and third trimesters. In the first trimester nearly 80 % of women have some degree of nausea. [9] Pregnancy should therefore be considered as a possible cause of nausea in any sexually active woman of child-bearing age. [8]
Previous studies have suggested sickness and nausea in pregnancy could relate to GDF15 being produced by the placenta, but researchers said the “full mechanistic understanding is lacking”.
However, there is a lack of sources which describe major TB epidemics with definite time spans and death tolls. Hepatitis B : According to the World Health Organization, as of 2019 [update] there are about 296 million people living with chronic hepatitis B, with 1.5 million new infections each year.
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