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robynmac/Getty Images. Eggs are an amazing source of both vitamins B12 and D, which may support the development of the baby’s nervous system and contribute to a healthy birth weight ...
Superfetation (also spelled superfoetation – see fetus) is the simultaneous occurrence of more than one stage of developing offspring in the same animal. [1] [2] [3] In mammals, it manifests as the formation of an embryo from a subsequent menstrual cycle, while another embryo or fetus is already present in the uterus.
The presence of mercury in fish is a health concern for people who eat them, especially for women who are or may become pregnant, nursing mothers, and young children. Fish and shellfish concentrate mercury in their bodies, often in the form of methylmercury, a highly toxic organomercury compound.
Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse, which can lead to twin babies from two separate biological fathers. [1] [2] The term superfecundation is derived from fecund, meaning able to produce offspring. Homopaternal superfecundation is fertilization of two ...
By MARY CLARE JALONICK and LAURAN NEERGAARD Associated Press WASHINGTON (AP) -- The Food and Drug Administration is updating its advice for pregnant women on the appropriate levels of mercury in ...
The seafood industry has taken a toll on the ocean's resources, and many marine species have been impacted. Years of overfishing have reduced some populations to below sustainable levels, and ...
Pregnant woman eating fruit. Nutrition and pregnancy refers to the nutrient intake, and dietary planning that is undertaken before, during and after pregnancy. Nutrition of the fetus begins at conception. For this reason, the nutrition of the mother is important from before conception (probably several months before) as well as throughout ...
Specialty. Obstetrics and gynaecology. A vanishing twin, also known as twin resorption, is a fetus in a multigestation pregnancy that dies in utero and is then partially or completely reabsorbed. [ 1][ 2] In some instances, the dead twin is compressed into a flattened, parchment-like state known as fetus papyraceus. [ 3]