Vitamin B9 · The Neural-Tube Nutrient
The single strongest case in prenatal nutrition: starting before conception cuts the risk of neural tube defects by roughly half.
Maternal Health
Preconception & Fertility
Before pregnancy: building stores
10 entries. 3 rest on strong human evidence. Ordered with the best evidenced first.
10 entries in Preconception & Fertility
A World Map of Who Adds It to the Food
Whether a country adds folic acid to its food supply changes neural-tube-defect rates at the population level, and the world is split on whether to do it.
Multiple Micronutrient Supplements
Evidence grade 4 of 5, Strong. Read how the Atlas grades evidence.The Global Shift from Iron-Folate Alone
In much of the world the prenatal question is not which boutique formula, but whether to give multiple micronutrients at all instead of just iron and folic acid.
The Thyroid and Brain-Development Mineral
Iodine builds thyroid hormones that steer fetal brain development, and need rises in pregnancy, yet many prenatal supplements still leave it out.
Alcohol, Excess Caffeine, and High-Risk Herbs
The short, well-evidenced list of things to keep out of a pregnancy, where the guidance is unusually clear.
The Window That Closes Before You Know
The most consequential prenatal nutrition often has to happen before pregnancy is even known, which is why preconception is its own subject.
Five Places, Five Different Answers
A side-by-side of how the US, UK, EU, Japan, and lower-income regions actually approach prenatal nutrition differently.
How Prenatal Guidance Differs by Region
The advice a pregnant person gets depends heavily on where they live, and the differences between the US, Europe, the UK, and the wider world are larger than most people realize.
The Overlooked Brain-Building Nutrient
A nutrient most prenatal vitamins skip, that the vast majority of pregnant people fall short on, and that supports the same brain and spinal-cord development as folate.
The Nutrient Plant-Based Diets Must Plan For
Works hand in hand with folate, matters most for those eating little or no animal food, and is one nutrient a plant-based pregnancy genuinely has to plan around.