Pregnancy cravings are intense urges for specific foods that most pregnant people experience, often starting in the first trimester. They can persist throughout the entire pregnancy or fade after the first few months. While the exact cause isn’t fully understood, the leading explanations point to hormonal shifts, changes in taste and smell, and the body’s increased energy demands. About one in four pregnant people report craving sweets above all else, but cravings span everything from fruit and cheese to fast food and ice.
Most Common Cravings
A study analyzing cravings reported by 200 pregnant women found a wide spread of food types, with no single category dominating. Sweets like chocolate and candy topped the list at about 26%. Savory, high-calorie carbohydrates (pizza, chips) and animal protein (steak, chicken) tied for second at around 19% each. Fruit came in close behind at nearly 19%, followed by savory dairy foods like cheese and sour cream at about 18%.
Rounding out the top ten were fast food at 17%, cold foods like slushies and ice cream at 13%, vegetables at 12%, and sweet dairy foods like milkshakes at about 12%. The takeaway is that pregnancy cravings aren’t limited to the stereotypical pickles-and-ice-cream combination. They’re highly individual and often shift throughout the pregnancy.
Why Cravings Happen
There are four main theories about what drives pregnancy cravings: hormonal changes, nutritional deficiencies, the rewarding properties of certain foods, and cultural or psychological influences. No single theory explains everything, and the real answer is likely a combination of all four.
The hormonal picture is complex. Estrogen, which typically suppresses appetite, and progesterone, which increases it, both rise dramatically during pregnancy. Progesterone’s appetite-boosting effect helps explain the general increase in hunger. At the same time, the body develops a resistance to leptin, a hormone that normally signals fullness. Leptin levels actually increase during pregnancy, but the brain stops responding to them as strongly, which means the usual “stop eating” signal gets muted. Meanwhile, brain chemicals that stimulate appetite ramp up, while those that suppress it become less effective. The net result is a system that’s been chemically recalibrated to push you toward eating more.
The nutritional deficiency theory is appealing but not well supported for most food cravings. The idea that craving chocolate signals a magnesium deficiency, for example, hasn’t held up in studies. However, there is one notable exception: cravings for ice or non-food substances like clay and chalk have been linked to iron deficiency, though even this relationship isn’t fully understood. Not all iron-deficient pregnant people develop these cravings, and not everyone with these cravings is iron-deficient.
How Smell and Taste Change During Pregnancy
Pregnancy reshapes the sensory experience of food in ways that directly fuel both cravings and aversions. About 85% of pregnant people identify at least one odor they’ve become dramatically more sensitive to. Cooking smells, cigarette smoke, spoiled food, perfumes, spices, and coffee are among the most commonly reported triggers. Some people describe previously unnoticeable smells becoming unbearable.
These sensory changes work in both directions. A heightened sense of smell can make certain foods suddenly repulsive, while making others more appealing than they’ve ever been. One evolutionary explanation is that increased olfactory sensitivity protects the developing embryo by steering the mother away from potentially toxic or spoiled foods during the vulnerable early weeks of development.
Food Aversions: The Other Side of Cravings
Cravings and aversions tend to appear together. While you might desperately want pizza, the thought of chicken could become nauseating overnight. Research supports the idea that aversions function as a protective mechanism, steering pregnant people away from foods that could carry pathogens or toxins. This “embryo protection hypothesis” suggests these aversions evolved to reduce the chance of ingesting something harmful during the critical early stages of fetal development. Aversions are also shaped by social learning, with pregnant people often avoiding foods that family or community members warn against.
Pica: When Cravings Turn to Non-Food Items
Pica is the craving and ingestion of non-food substances. During pregnancy, this most commonly involves ice, dirt, clay, and starch, but reported items range widely and have included chalk, soap, eggshells, paper, and even more dangerous substances like paint thinner.
The health risks are serious. For the mother, pica can cause dental damage, constipation, intestinal blockages, parasitic infections, lead poisoning, and interference with mineral absorption. For the baby, risks include premature birth, low birth weight, decreased head circumference, and exposure to chemicals like lead or pesticides. The relationship between pica and iron-deficiency anemia has been debated for decades. Some researchers believe anemia drives pica as the body attempts to compensate for missing minerals. Others argue it’s the reverse, that eating non-food substances interferes with iron absorption and causes the deficiency. If you find yourself craving non-food items, it’s worth getting your iron levels checked.
Do Cravings Predict Your Baby’s Sex?
The old wives’ tale goes like this: craving salty foods means a boy, craving sweets means a girl. Variations include pickles or chips pointing to a boy, while ice cream or chocolate signals a girl. None of this holds up scientifically. A baby’s sex is determined at conception by chromosomes, well before cravings develop. Studies comparing food cravings with fetal sex have found no reliable pattern. Cravings are driven by hormones, metabolism, and nutrient needs, not by whether the baby carries XX or XY chromosomes.
Managing Cravings Without Overdoing It
Cravings themselves aren’t harmful, but consistently giving in to high-calorie cravings can contribute to excessive weight gain, which raises the risk of complications like gestational diabetes. Current guidelines recommend that overweight pregnant people gain 15 to 25 pounds total, while those with obesity should aim for 11 to 20 pounds. For people starting at a healthy weight, the recommended range is 25 to 35 pounds.
The most effective approach combines dietary awareness with regular physical activity. You don’t need to white-knuckle your way through every craving. Satisfying a craving in a reasonable portion is fine. The goal is to build an overall eating pattern that meets your increased nutritional needs without consistently overshooting on calories. Swapping in healthier versions of craved foods can help: if you’re craving something sweet, fruit or yogurt can scratch that itch. If it’s salt you want, a handful of salted nuts gives you protein and healthy fats alongside the flavor you’re after.
Gestational diabetes screening typically happens between 24 and 28 weeks, though people with higher risk factors may be screened earlier. This is a routine part of prenatal care and isn’t triggered by having cravings, but the dietary choices that come with unchecked cravings can influence your metabolic health during pregnancy.
Cultural Differences in Cravings
What pregnant people crave varies significantly across cultures, which undermines the idea that cravings are purely biological. If the body were simply signaling a need for specific nutrients, you’d expect the same cravings everywhere. Instead, cravings tend to mirror the foods that are locally available, culturally valued, or considered indulgent within a particular society. This suggests that while hormones and sensory changes create the conditions for cravings, the specific foods you fixate on are shaped by what you’ve grown up eating and what your culture associates with comfort or reward.