Just as a counterpoint, I'd suggest that the science of pregnancy and parenthood is some of the least solid you're likely to encounter. Pregnant people and children are some of the hardest to study in a rigorous way, both because of the myriad of factors involved and the difficulty in performing research. Doing something like a double-blind test between a treatment and a placebo on a group of children who can't rationally consider the tradeoffs or consent is radically more complicated than doing the same kind of study on adults.