Pregnancy eating myths — and the advice that has a source

From the moment the news is announced, the advice begins. Neighbours, family, friends, and a woman on the bus. Eat this, avoid that, this does that.

Most of it is said with genuine affection. Some of it is correct, some has no basis at all, and some — the part this article is concerned with — is the opposite of what published guidance says.

"Eat for two"

The most famous sentence, and the most misleading. Dr Rana calls it "almost the one sentence every pregnant woman hears", and its effect is practical: "it makes some women treat pregnancy as though the body needed twice as much food from the first day, and that is not true."

Energy requirement in pregnancy does increase, but the increase is modest, and most of it belongs to the second and third trimesters rather than the first day. The fetus in the early months is very small, and the additional requirement at that stage is slight.

What increases proportionally more is not energy but the requirement for particular nutrients, iron and folic acid among them. So the accurate picture is not "twice as much" — it is "roughly the same amount at higher quality, with specific nutrients being followed".

The myth spreads because it is superficially logical — there are two of you, so eat twice — and because society encourages it. The consequence is greater weight gain in pregnancy than intended, which is a matter for clinical follow-up rather than general advice.

She puts it this way: "The body's requirements do change during pregnancy, but gradually, and they differ according to the stage, the mother's condition, her weight, her activity and the doctor's assessment. The idea is not that we double the food — it is that we pay more attention to its quality and to what the mother and the baby need."

Folic acid: the thing where the timing is the whole point

This is not a myth but its opposite: important information that arrives late.

Folic acid is involved in forming the fetal neural tube, and that tube closes at a very early stage of pregnancy — at a point when many women do not yet know they are pregnant at all.

Which is why published guidance discusses folic acid before conception rather than after it is confirmed. The World Health Organization recommends iron and folic acid supplementation in pregnancy, and the guidance specifically concerned with preventing neural tube defects treats that timing as fundamental.

So somebody saying "I will start the vitamins when I see the doctor" may have passed the stage at which this supplement mattered most.

"Iron upsets my stomach, so I stopped it"

The first half of that sentence is usually true. Digestive symptoms from iron supplements are well known and common, constipation among them.

The second half is the error. The WHO recommends daily iron and folic acid supplementation in pregnancy, and pregnancy itself substantially increases the requirement for iron, because of the increase in blood volume and the formation of the placenta and the fetus.

And the answer is not stopping — it is telling the doctor about the symptoms, because there are possible adjustments in timing, form or dose. Stopping without saying anything is the worst of the options, because it leaves the deficiency in place without resolving the symptom.

Dr Rana sets a general rule for supplements in pregnancy: "Supplements are not a place for experimenting. Don't take a vitamin or a herb or a supplement just because somebody said it was 'good for pregnancy'. Supplements and doses are decided with the medical team according to what you need."

That rule runs in both directions: just as it rules out adding something on your own, it rules out stopping something on your own.

Why the iron requirement rises in pregnancy specifically

This is more than "a pregnant woman needs more iron". The mechanism explains why it is followed so seriously.

In pregnancy the blood volume increases substantially, and the increase is not even: plasma volume rises proportionally more than red cell volume. The result is that haemoglobin concentration falls naturally during part of pregnancy, and that is not necessarily anaemia — it is physiological dilution.

At the same time there is a genuine new requirement: forming additional red cells, building the placenta, and the fetus itself storing iron in the later months to use after birth.

So there is a rising requirement and a store being drawn on, which is what makes iron status before pregnancy matter as much as during it.

Food safety: the rules that do matter

Alongside the myths there are real things. Dr Rana states them as categories rather than as a list: "There are food-safety rules during pregnancy that genuinely matter — avoiding foods known to carry a risk of contamination, paying attention to how food is cooked and stored, and choosing suitable kinds of fish while avoiding the ones high in mercury."

She says it as categories deliberately. What exactly should be avoided in your case and at your stage is decided in follow-up with the doctor, not memorised from an article. What comes next sets out what published guidance says on the points that get asked about most — as information, not as a substitute for that conversation in the clinic.

"Avoid all fish"

A myth that spreads because it looks like the safe option.

Guidance in pregnancy does not exclude fish — on the contrary, fish is a source of protein and important fatty acids. What is said is a distinction: avoiding species known to be high in mercury, and avoiding raw, undercooked or salt-fermented fish.

Well-cooked local fish is not the problem. A blanket exclusion removes a good source of food and solves nothing.

Liver: the most Egyptian food with a pregnancy warning attached

This is the point where most circulating advice says the opposite.

Liver is a very rich source of iron — true, which is exactly why it gets recommended to pregnant women in a great many households. But liver is also very rich in vitamin A in its preformed state (retinol), and high amounts of that form in pregnancy are associated with risk to the fetus.

Which is why dietary guidance in pregnancy advises avoiding liver and its products, and high-dose vitamin A supplements, during pregnancy.

The distinction matters: vitamin A from vegetables such as carrots and sweet potato is in a different form (beta-carotene) that the body converts according to need, so it does not carry the same concern.

The myth here is not really a myth — it is a correct piece of information leading to a wrong conclusion.

Aged cheese, mish and fesikh

Genuinely Egyptian foods, and all carrying the same note in pregnancy.

Unpasteurised dairy, and soft cheese made from unpasteurised milk, carry a risk of bacterial contamination — listeria among them, whose infection in pregnancy has recognised risks to the fetus even when the mother's own symptoms are mild. Which is why dietary guidance in pregnancy advises pasteurised dairy.

Fesikh and renga are salted, fermented fish, and fesikh in particular is associated in Egypt with seasonal poisoning cases. Sham El-Nessim comes round every year, the whole family eats, and the social pressure is real. What is worth knowing is that this is not the year to try it.

Meat, poultry and eggs that are not thoroughly cooked follow the same logic: full cooking reduces the risk of foodborne infection, toxoplasmosis among them.

"A craving means your body needs that thing"

A lovely idea, widely held, with a simpler explanation.

Cravings are a real and common phenomenon, and they shift along with appetite, taste and nausea in pregnancy. But the idea that a craving is a precise signal of a specific nutrient deficiency is not supported — and what gets craved is usually something sweet, salty or rich, rather than something rich in iron or calcium.

The myth spreads because it gives meaning to something puzzling, and because it makes acting on the desire feel justified. There is no problem with acting on a desire sometimes — the problem is when the response turns into a diagnosis.

"Cut out salt completely because of the swelling"

Swelling in pregnancy is common and has physiological causes related to increased fluid volume and the pressure of the uterus on the veins.

But complete salt restriction is not a recommendation in antenatal care guidance. And more important than any of that: sudden or severe swelling, particularly in the face and hands, accompanied by headache or a change in vision, is a symptom to report to a doctor immediately rather than something to treat by adjusting salt.

So this myth is not merely inaccurate — it can delay something that needs to be seen.

"Dates make labour easier"

This is one where honesty means saying the picture is not settled.

There have been studies looking at eating dates in late pregnancy and labour outcomes, and some have reported positive findings. But those studies are relatively small and the overall picture is not yet stable enough to be stated as a recommendation.

So: dates are good food, eating them in pregnancy is not a problem for most people, and saying they "make labour easier" is larger than the evidence available. The difference between those two sentences is the difference between an honest description and a promise.

"Nausea means the pregnancy is going well" and "food will not stay down so do not eat"

Those two sentences get said together and contradict each other.

Nausea in the early months is very common and thoroughly unpleasant, and the conclusion that food is "pointless" during it is what causes trouble: somebody stops eating, and hunger itself worsens nausea in many women, so the loop closes on itself.

And what is worth saying: severe persistent nausea that prevents eating and drinking, accompanied by weight loss or signs of dehydration, is not a phase to be got through — it is a situation to be seen by a doctor, because it has clinical management.

So what gets asked at a first appointment?

Those symptoms are not a footnote to the plan — they are part of what the plan is built on.

Dr Rana says the first things she asks about are the stage of the pregnancy, the weight before it and what has changed since, the symptoms, the tests and the follow-up with the obstetrician, and the medicines and supplements being taken — and after that, the day and the food.

Then the practical questions:

Do you have nausea? Vomiting?

Heartburn? Constipation?

Is your appetite there, or are you unable to eat?

Are there particular foods you have gone off?

And the reason, in her own words: "A pregnant woman's plan has to deal with what is actually happening to her, not with an ideal timetable on paper."

In the Egyptian context: herbs and drinks

Fenugreek, aniseed, cinnamon and hibiscus are drunk regularly in Egyptian households and offered to pregnant women as "natural".

"Natural" is not the same as "safe in pregnancy". Some herbs have genuine pharmacological effects, some carry cautions in pregnancy, and information on many of them is limited. And caffeine — in tea, coffee and fizzy drinks — is something guidance discusses reducing during pregnancy.

The practical point: anything taken regularly should be mentioned to the doctor, even if it is a drink.

And the advice that comes from the family

Advice in pregnancy arrives from people who have been pregnant before you, and that is exactly why it arrives with confidence.

Dr Rana says this is something she wants every pregnant woman to know: "Not every piece of advice you hear from somebody who has been through pregnancy before you applies to you."

One last thing about the family itself. The pressure in pregnancy comes from people who genuinely care, which is what makes it hard. The sentence that works is not "that is wrong" — it is that there is a doctor following this pregnancy, and that this will be asked about. That closes the conversation without wounding anybody.

Worth remembering

Not everything said with affection is correct, and not everything "natural" is safe in pregnancy.

The requirement rises in quality more than in quantity. Folic acid belongs before conception. Iron has symptoms that are managed rather than a supplement that is stopped. Liver is a correct fact leading to a wrong conclusion. And unpasteurised dairy, fesikh and undercooked meat carry recognised notes.

And sudden swelling is not a question about salt — it is a question for a doctor.

As Dr Rana puts it: "Pregnancy is not a time to eat as we please on the excuse of 'eating for two', and it is not a time for a harsh diet out of fear of gaining weight. It is a time to nourish your body properly, to follow your health and the growth of the pregnancy, and to make any large dietary decision on the basis of your own case."

If you are pregnant and want a plan built on your case and your stage: pregnancy and breastfeeding nutrition or book an appointment.

And there is an article on breastfeeding and feeding questions: questions that keep coming up about feeding.