Busting Pregnancy Myths: What Science Really Says

Here are 6 myths and the science behind the reality:

❌ Myth 1: You need to “eat for two”

✅ Reality: Pregnancy increases your nutritional needs—but not twofold. In the first trimester, calorie needs stay nearly the same or increase only slightly. In the second trimester, you need about 340 extra calories per day, and in the third trimester, about 450 extra calories daily. That’s roughly the equivalent of a nutrient-dense snack or small meal, not double portions.

❌ Myth 2: You should avoid exercise during pregnancy

✅ Reality: Low-Moderate physical activity is not only safe during a healthy pregnancy—it’s recommended. Activities like walking, or prenatal yoga can improve circulation, regulate mood, enhance sleep, and reduce the risk of gestational diabetes, preeclampsia, and excessive weight gain. Avoid high-risk activities like contact sports, intense exertion, or exercises that pose a fall risk or risk to the abdomen. Always consult your doctor if you have pregnancy complications.

❌ Myth 3: Sex during pregnancy can harm the baby

✅ Reality: In most healthy pregnancies, sexual activity is safe unless medically advised otherwise. The baby is protected by the uterus, amniotic sac, and strong uterine muscles. Sex does not cause miscarriage or harm the fetus. However, if you have conditions such as placenta previa, cervical insufficiency, or a high risk of preterm labor, your provider may advise against it. Also, hormonal shifts may make sex uncomfortable during the first or third trimester, so communication and comfort are key.

❌ Myth 4: Heartburn means your baby will have lots of hair

✅ Reality: This is largely anecdotal, though a small study did show a possible link between pregnancy hormones (like estrogen) and both heartburn and fetal hair growth. Still, heartburn is primarily caused by progesterone relaxing the lower esophageal sphincter, allowing stomach acid to rise—not by your baby’s hair. So while it might be a funny coincidence, it’s not a reliable predictor.

❌ Myth 5: Belly shape or fetal heart rate can predict the baby’s gender

✅ Reality: No scientific evidence supports this claim. Belly shape is influenced by factors like your body type, muscle tone, and fetal position—not the baby’s sex. Similarly, fetal heart rate varies throughout pregnancy and is affected by fetal activity—not gender. Only ultrasound and genetic testing can accurately determine sex.

❌ Myth 6: Spicy food can trigger labor

✅ Reality: Spicy foods can cause digestive discomfort, but they do not induce labor. There’s no scientific basis to the belief that eating spicy food will cause the uterus to contract or the cervix to dilate. What it may do is irritate your gastrointestinal tract, especially in the third trimester when heartburn is common.

TPS Expert says..
There’s no shortage of myths about pregnancy—many well-meaning but ultimately misinformed. Science and individual care matter more than superstition. Trust your healthcare provider, stay informed, and don’t hesitate to ask questions.
Every pregnancy is different. Feeling empowered, supported, and educated makes all the difference.