Risk factors for complete molar pregnancy from a case-control study.

Area of Science:

• Reproductive health
• Nutritional science
• Epidemiology

Background:

• Molar pregnancy is a rare complication of pregnancy.
• Geographic variations in molar pregnancy incidence suggest environmental factors.
• Nutritional deficiencies are potential contributors to molar pregnancy.

Purpose of the Study:

• To investigate demographic, reproductive, and dietary factors associated with complete molar pregnancy.
• To identify potential nutritional risk factors for molar pregnancy.

Main Methods:

• A multivariate analysis compared 90 women with complete molar pregnancy to 90 matched controls.
• Data collected included demographic, reproductive, and dietary histories.
• Dietary intake of carotene, a vitamin A precursor, was assessed.

Main Results:

• Women with molar pregnancy were more likely to be born outside North America (RR=1.9) and over age 30 (RR=1.6).
• Lower dietary carotene intake was associated with increased molar pregnancy risk.
• Higher carotene intake correlated with a reduced risk (RR=0.6) and a decreasing trend in risk.

Conclusions:

• Dietary carotene deficiency is a plausible nutritional risk factor for complete molar pregnancy.
• Carotene intake may influence the geographic distribution of molar pregnancy.
• Further research is warranted to explore other nutritional factors.