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Teratogenic

Capable of causing birth defects in a fetus.

Describes agents (drugs, infections, nutrient excesses or deficiencies) that disrupt embryonic development. Excess vitamin A is a classic nutrition-related teratogen.

How one textbook covers it

Advanced Nutrition and Human Metabolism, 8th ed. (Gropper) — Glossary
Describes agents (drugs, infections, nutrient excesses or deficiencies) that disrupt embryonic development. Excess vitamin A is a classic nutrition-related teratogen.