OEHHA defines reproductive toxicity (or reproductive harm) as a chemical’s interference with a person’s ability to give birth to a normal, healthy child. California believes that marijuana smoke and delta 9-THC products could affect male and female reproductive systems, thereby inhibiting people’s ability to reproduce, or leading to “effects on the developing embryo, fetus, or child, resulting from exposure during pregnancy.” Because of this, both substances have been listed in Prop 65.