ABSTRACT
There is a paradigm shift in science at present that indicates that the onset of many
diseases, including reproductive diseases and dysfunctions, are already programmed
in utero or in the early postnatal period. This new field is called the developmental
basis of health and disease. Although focus has been on the role of in utero nutrition
and its effects on subsequent adult-onset diseases, it is clear that exposure to environmental
stressors/toxicants in utero or during early development can also increase susceptibility
to disease later in life. The mechanism for this in utero and early developmental
effect is thought to be altered epigenetic control of gene expression, which alters
developmental programming and results in a tissue that may appear normal but is functionally
compromised. Although this concept is still a hypothesis, this review addresses the
current state of data relating to proving its importance and role in reproductive
diseases. If the developmental basis of disease is shown to be true, then examination
of the etiology of disease and prevention and intervention strategies will need to
be modified to fit the new paradigm.
KEYWORDS
Development - environmental exposures - reproduction - transgenerational effects -
epigenetics
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