The Science Behind Nurava

Calm comes easier when you understand what's happening.

Nurava is built on published research and public health guidance, translated into simple words for a tired mind.

What the research tells us

Nausea is common, and it isn't your fault

Nausea and vomiting affect most pregnant women, with estimates ranging from about 50% to 80%. A 2024 study in Nature linked it to a hormone called GDF15, made largely by the placenta, and to how sensitive each woman's body is to it. Hormones like hCG and estrogen also play a role.

How Nurava uses this: the Core Reset Guide starts by normalizing nausea, so guilt and fear stop leading your choices.

Smell and taste really do change

Many women report a heightened sense of smell and changes in taste early in pregnancy. Foods you loved can suddenly feel unbearable, and plain, simple foods often feel safest.

How Nurava uses this: food lists are organized by how you feel today, 🔴 hard, 🟡 medium or 🟢 good, instead of one fixed menu.

Early pregnancy doesn't need extra calories

Guidance from the American College of Obstetricians and Gynecologists notes that most women don't need extra calories in the first trimester. Needs rise gradually in the second and third trimesters.

How Nurava uses this: on hard days, the goal is "stay nourished enough," not "eat perfectly." Small, frequent bites count.

Carbohydrates matter

The recommended dietary allowance for carbohydrates during pregnancy is 175 grams per day, because glucose is a main fuel for the growing baby's brain. Whole grains also bring fiber and folate.

How Nurava uses this: simple carbs like crackers and toast are part of the plan on hard days, not something to feel guilty about.

Small comforts can help

Clinical guidance commonly suggests eating small, frequent meals, choosing bland foods, and trying ginger, which has been shown in studies to help some women with mild nausea.

How Nurava uses this: the Hard Day page gives you a short, ready list, so you don't have to think.

Food safety still comes first

Public health guidance advises pregnant women to eat meat and eggs fully cooked, choose pasteurized dairy, and avoid fish that are high in mercury.

How Nurava uses this: every food list follows these safety rules, so you can choose without second-guessing.

A typical nausea timeline

Weeks 4–9Often begins

Weeks 8–12Often peaks

Weeks 16–20Eases for most

Every pregnancy is different. Some women feel better sooner, some later.

Our approach

Simple over complete. We choose what helps you decide today, not everything there is to know.
Reassuring, never alarming. Clear facts, written to calm, not to scare.
Safety first. We always point you to your doctor or midwife for anything that needs medical care.

🔴 When it's more than common nausea

If you can't keep down food or fluids for 24 hours, feel dizzy or faint, are losing weight, or have very dark urine, contact your healthcare provider. Severe, persistent vomiting (hyperemesis gravidarum) needs medical care. See our Medical Disclaimer.

Sources

American College of Obstetricians and Gynecologists (ACOG). Practice Bulletin No. 189: Nausea and Vomiting of Pregnancy. Obstetrics & Gynecology, 2018.
Fejzo M, et al. GDF15 linked to maternal risk of nausea and vomiting during pregnancy. Nature, 2024.
ACOG. Nutrition During Pregnancy (patient FAQ).
Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. National Academies Press, 2005.
U.S. Food and Drug Administration (FDA) & Environmental Protection Agency (EPA). Advice about Eating Fish.
Centers for Disease Control and Prevention (CDC). Listeria and Pregnancy.

Nurava is not affiliated with or endorsed by these organizations. Sources are listed to show where our information comes from.