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Superfetation. 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.
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 pregnancy and breastfeeding.
merc67/Getty Images. Think kale, spinach, arugula and Swiss chard.They’re all rich with folate, plus some other beneficial pregnancy nutrients cited by ACOG like vitamin C, the minerals iron ...
Environmental toxicants and fetal development. Environmental toxicants and fetal development is the impact of different toxic substances from the environment on the development of the fetus. This article deals with potential adverse effects of environmental toxicants on the prenatal development of both the embryo or fetus, as well as pregnancy ...
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 ...
Fans of Ashley Graham expressed concern after the supermodel shared a full-term pregnancy photo. Is it safe to carry twins to 40 weeks? And how long is the average twin pregnancy? Experts weigh in.
Fetus in fetu (or foetus in foetu) is a rare developmental abnormality in which a mass of tissue resembling a fetus forms inside the body of its twin. An early example of the phenomenon was described in 1808 by George William Young. [ 1 ] There are two hypotheses for the origin of a fetus in fetu. One hypothesis is that the mass begins as a ...
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 ...