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Myths vs facts

Common Pregnancy Myths: The Facts You Need to Know

Medically reviewed by Zeinab Alkashaf · July 15, 2026

Quick answer

Most claims about predicting a baby's sex from belly shape or cravings are myths that science does not support. A healthy pregnancy does not mean doubling your food, avoiding all activity, or cutting out all fish — it means sensible balance guided by your doctor. The facts are more reassuring than the myths, and decisions based on trusted information protect you and your baby. When in doubt, your doctor or midwife is your first reference.

Pregnancy is an emotional journey, and it comes with a flood of advice from family, friends, and the internet. Some of that advice is kind and helpful; some is simply myth passed down through generations without evidence. In this guide we calmly and respectfully walk through the most common pregnancy myths, and place next to each one the simplified scientific fact, so you can make decisions with confidence and peace of mind. This information is general education and does not replace consulting your own doctor, who knows your individual situation.

Myth The shape of your belly reveals the baby's sex: a pointed belly means a boy, a round one means a girl.

Fact Belly shape has nothing to do with the baby's sex. What determines your belly's shape is your body build, the strength of your abdominal muscles, the baby's position, and how many times you have been pregnant before. The only reliable way to know the sex is an ultrasound or medical testing.

Myth You must eat for two and double the amount of food because there is a baby growing inside you.

Fact Pregnancy needs a small amount of extra energy, not double the food. In the early months you often need almost no extra calories, and the need rises moderately in the second and third trimesters. What matters most is the quality of food, not the quantity: protein, vegetables and fruit, whole grains, plus folic acid and iron as your doctor advises.

Myth Craving sweets or sour foods, or carrying high or low, predicts the baby's sex.

Fact There is no scientific evidence linking cravings or where you carry the baby to its sex. Cravings are tied to changes in hormones, senses, and eating habits, while carrying "high or low" depends on your body shape, muscle strength, and the baby's position. These are fun observations, but not a diagnostic method.

Myth A pregnant woman must avoid all forms of exercise and movement to protect the baby.

Fact In a normal pregnancy, moderate physical activity such as walking, swimming, and prenatal exercises is usually encouraged — it helps sleep, mood, back pain, and preparing for birth. The key is to avoid high-risk activities and to check with your doctor first, especially if you have a high-risk pregnancy or complications.

Myth Frequent heartburn during pregnancy means your baby will be born with a lot of hair.

Fact This is an old folk belief, and the evidence for it is weak and very limited. Heartburn in pregnancy is known to be caused by the muscle between the stomach and esophagus relaxing due to hormones and the growing uterus's pressure — not the baby's hair. If heartburn bothers you, there are safe ways to ease it that you can discuss with your doctor.

Myth You cannot travel or keep working normally while pregnant.

Fact In a healthy pregnancy without complications, most women can continue working and traveling within reasonable limits. The second trimester is often the most comfortable time to travel. Keep moving during long periods of sitting, stay hydrated, and check with your doctor about timing and destination, especially in the final weeks or with any special condition.

Myth You must avoid all types of seafood during pregnancy.

Fact The picture is more nuanced. Many low-mercury fish — such as salmon and sardines — are healthy and rich in omega-3, which is important for the baby's brain development, and are usually recommended in moderation and well-cooked. What is advised to limit or avoid is high-mercury fish and raw seafood. Ask your doctor about the types and amounts that suit you.

When to talk to your doctor

The best source of information for your specific case is your doctor or midwife, because they know your medical history and the details of your pregnancy. Do not hesitate to ask any question, however simple it seems, and do not rely on a myth you heard to change your diet, activity, or medications. See your doctor if you notice worrying symptoms such as bleeding, severe pain, sudden swelling, or a clear drop in the baby's movement. Remember: asking questions is a sign of awareness and care, not of over-worry — and you deserve trustworthy information that reassures your heart.

Frequently asked questions

Can I tell the baby's sex from belly shape or cravings?
No. There is no scientific evidence for this. The reliable methods are ultrasound or medical tests done by your doctor.
Do I really need to double the amount of food I eat in pregnancy?
No. Pregnancy needs a small amount of extra energy that rises gradually in the second and third trimesters. What matters most is quality and variety of food, not doubling the quantity.
Is exercise safe during pregnancy?
In a normal pregnancy usually yes, and moderate activity like walking and swimming is beneficial. Check with your doctor first, especially with any special condition, and avoid high-risk activities.
Should I avoid all fish completely?
No. Low-mercury, well-cooked fish is healthy and rich in omega-3. The limit applies to high-mercury fish and raw seafood. Ask your doctor about suitable amounts.

Sources

This content is for educational purposes only and is not a substitute for professional medical advice.

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