Folic acid: start before you know, not after.

If there's one thing on this whole list worth acting on today, it's this. Folic acid isn't a wellness trend or a nice-to-have — it's one of the few things in early pregnancy with decades of solid evidence behind it. And the catch is entirely about timing: by the time most people find out they're pregnant, the window where it matters most has often already begun to close.

What it actually does.

Folic acid is a B vitamin your baby needs to build the neural tube — the structure that becomes the brain and spinal cord. When there isn't enough folate at the right moment, the neural tube can fail to close properly, leading to serious conditions like spina bifida. Getting enough dramatically lowers that risk. This isn't a small or theoretical benefit — it's one of the clearest, most reliable protections in the whole of pregnancy.

Why "before you know" is the whole point.

The neural tube closes within roughly the first four weeks of pregnancy — often before a missed period, before a positive test, before you have any idea you're pregnant. That's the heart of it. If you wait until you know, you've likely missed the most important stretch. This is why every guideline says to start before conception, not after — so the folate is already there when it matters, rather than racing to catch up.

How much, and when to start.

For most people, the standard dose is 400 micrograms (0.4 mg) a day, taken on its own or as part of a prenatal vitamin. Start it at least a month before you begin trying — two to three months is even better — and continue through the first twelve weeks of pregnancy. There's no benefit to megadosing on your own; more isn't better here, and very high doses can actually mask a vitamin B12 deficiency, which is worth avoiding.

When a higher dose is needed.

Some people need a much higher dose (around 5 mg), but only on a doctor's advice and for specific reasons — a previous pregnancy affected by a neural tube defect, a family history of one, diabetes, or certain medications. This is a conversation to have with your doctor, not a decision to make yourself at the pharmacy counter. If any of these apply to you, raise it early so there's time to sort out the right dose.

A note for our families.

Two things worth flagging for Indian families. First, folate deficiency and neural tube defects are relatively common here, which makes starting early genuinely important rather than optional. Second, vitamin B12 is very commonly low, especially on vegetarian diets — so it's worth checking alongside your folate rather than in isolation. Leafy greens, dals, and fortified foods all help, but they aren't a reliable substitute for the supplement at this stage.

If you're reading this already pregnant.

Please don't panic. If you only found out today and haven't been taking folic acid, the answer is simple: start now, and mention it at your first appointment. Starting late is far better than not starting, and the vast majority of pregnancies where folic acid began a little later are perfectly healthy. The point of this piece isn't to alarm anyone — it's to give the people who haven't started yet the one nudge that genuinely matters.

Related in the circle: The pre-pregnancy health check →