Loss of appetite during pregnancy

By trimester

Weeks 1–13

1st trimester

Many people eat less in the first trimester. Nausea, a stronger sense of smell, and shifting hormones can all take the edge off appetite. This is normal and doesn't mean your baby is missing out, as long as you're keeping down some food and fluid overall. Small bites every couple of hours, like crackers, fruit, or a handful of nuts, are often easier than a full plate.

Weeks 14–27

2nd trimester

Appetite usually comes back, and often increases, once nausea eases in the second trimester. If you're still not hungry, or you're losing weight instead of gaining it, bring this up at your next prenatal visit instead of waiting for it to pass on its own.

Weeks 28–birth

3rd trimester

Late in pregnancy, a growing uterus leaves less room for your stomach to expand, so big meals can feel uncomfortable even when you're hungry. Smaller meals spaced closer together, with fluids sipped in between, usually sit better. Call your provider the same week if you notice less urination, dizziness, or a drop in weight.

What does the evidence show for loss of appetite?

• Eating small meals every one to two hours, each with a little protein, is a practical way to keep some nutrition going when a lighter appetite and nausea make bigger meals unappealing. 1
• Dark or scant urine, being unable to urinate, not keeping any liquids down, feeling dizzy when you stand, or a racing heartbeat are dehydration warning signs that call for contacting your ob-gyn or midwife right away. 2
• A daily prenatal vitamin still covers essential ground on low-appetite days, since pregnancy raises the folate target to 600 mcg DFE and falling short over time has been linked to neural tube defects and lower birth weight. 3
• Pregnancy also raises the daily iron target to 27 mg, and consistently low intake has been linked to anemia, lower birth weight, and preterm birth, which is another reason a prenatal matters even when overall eating is limited. 4
• Only a small share of pregnancies, roughly 0.3 to 2 percent, cross into hyperemesis gravidarum, the more serious form defined by dehydration, ketones in the urine, and losing more than 5 percent of body weight, which is the point where appetite loss needs prompt medical care instead of home fixes. 5

When should I call my provider about loss of appetite?

Appetite loss turns into a provider conversation at the point it is interfering with eating, drinking, sleeping, or getting through your day, which is the threshold MotherToBaby names for stopping the solo approach. Losing weight instead of gaining it, alongside constant vomiting and dehydration, is the hyperemesis gravidarum picture, and that version can require hospitalization. If your appetite drops away for the first time at the 10th week or later, say so specifically, since nausea starting that late may trace to something other than the pregnancy. When in doubt, call your obstetric team the same day. Early input almost always beats waiting, and the on-call line exists exactly for this.