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
Core Prenatal Nutrients
Folate, iron, iodine, choline, DHA, vitamin D
18 entries. 3 rest on strong human evidence. Ordered with the best evidenced first.
18 entries in Core Prenatal Nutrients
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.
Bone Mineral and Preeclampsia Shield
A bone mineral most people fall short on, and one of the few supplements with strong trial evidence for lowering preeclampsia risk where dietary calcium is low.
The Fetal Brain and Preterm-Birth Fatty Acid
A fatty acid that builds the fetal brain and eye and, in good trials, lowers the risk of preterm birth, with a real twist about who actually benefits.
The Nutrient and the Contaminant in One Food
The same food that is the best natural source of DHA also carries mercury, and fear of the contaminant has driven many pregnant people to underconsume the nutrient.
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.
The Oxygen-Carrying Mineral
Pregnancy roughly doubles iron demand to build maternal blood volume and supply the growing fetus, and deficiency is the most common nutritional shortfall in pregnancy worldwide.
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.
Essential, and the One to Watch the Ceiling On
A nutrient pregnancy genuinely needs, and the clearest example of a vitamin where too much, in the wrong form, causes serious birth defects.
How Much "Eating for Two" Really Means
"Eating for two" is one of the most persistent prenatal myths; the actual extra energy need is modest and weight-gain targets depend on starting weight.
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.
The Contested Sunshine Vitamin
A nutrient everyone agrees matters, where the experts genuinely disagree on how much, what blood level to aim for, and whether to screen at all.
Reading the Label Behind the Marketing
Prenatal vitamins are not standardized or pre-tested, and the gaps between brands, missing choline, low calcium, token iodine, are exactly what the label ghostwrites past.
The Quiet Mineral of Growth and Repair
Essential for growth, immunity, and healing, with a small and weakly recommended effect on preterm birth, and a real depletion problem after delivery.