Carbohydrates and Healthy Weight Gain During Pregnancy

Pregnancy places increased nutritional demands on a woman’s body as it supports the growth and development of the fetus. To meet these needs, women are advised to increase their daily energy intake by about 300 calories during the second and third trimesters. This additional energy helps sustain maternal health, support fetal growth, and prepare the body for childbirth and lactation.

Healthy weight gain during pregnancy varies depending on a woman’s pre-pregnancy body mass index (BMI). For women with a normal BMI, the recommended total weight gain is approximately 25–30 pounds (11.6–13.5 kg). Typically, about 3.5–5 pounds (1.6–2.3 kg) are gained during the first trimester, followed by a steady gain of about 1–2 pounds (0.5–1.0 kg) per week during the second and third trimesters. By 20 weeks of gestation, a woman should ideally have gained around 10–13 pounds (4.5–6.0 kg).

During the second trimester, much of the weight gain reflects physiological changes rather than fat accumulation. These include increased blood volume, enlargement of the breasts and uterus, and additional body fluids. Inadequate weight gain during this period has been linked to low birth weight and a higher risk of infant illness and mortality, highlighting the importance of adequate nutrition.

Carbohydrates play a central role in meeting the increased energy needs of pregnancy. Current dietary guidelines recommend a minimum carbohydrate intake of about 175 grams per day for pregnant women. Carbohydrates are the body’s primary energy source and are essential for fueling the growing fetus, particularly the developing brain. They also provide dietary fiber, which helps prevent constipation—a common pregnancy concern.

When total calorie and carbohydrate intake is insufficient, the body may begin breaking down protein for energy. This can lead to ketosis, a condition in which ketone bodies accumulate in the blood. Ketosis is of particular concern for women with diabetes, as it may be associated with glycosuria, altered acid–base balance, and abnormal lipid levels.

To support a healthy pregnancy, women are encouraged to consume a balanced diet rich in carbohydrate-containing foods such as dairy products, fruits, vegetables, and whole-grain cereals and breads. These foods provide not only energy, but also essential vitamins, minerals, and fiber needed for both maternal well-being and optimal fetal development.
Carbohydrates and Healthy Weight Gain During Pregnancy

Food aversions during pregnancy

Food aversions during pregnancy are almost as common as food cravings. It is quite normal in pregnancy to suddenly be disgusted by the taste, sight, and/or smell of a certain food or beverage that she have already enjoyed.

Food aversion is when food the person normally is able to look at smell and even taste suddenly sends the person running in the opposite direction.

They appear in the first trimester and usually trigger the part of pregnancy which is call morning sickness. 

Food aversion can go as quickly and they come and differ from woman to woman as much as cravings do. 

The most common aversions in US samples appear to be towards alcohol, coffee, meat and foods which have a distinct flavor or smell, for example spicy foods or Italian foods.

Scientists found that many of the adolescents studied experienced aversions during pregnancy towards previously like foods. The most common aversions were to meats, eggs, and pizza and led to decreased consumption of these foods.

Studies have shown that between 50 and 85 percent of all pregnant women have some sorts of food aversion during pregnancy.

This aversion is often related to the huge hormonal changes inherent to pregnancy.

The most recent explanation to these foods aversions emphasizes the biological relevance of food aversion for the mother and fetus.

This hypothesis states that nausea and vomiting protect the embryo from harmful teratogenic and abortifacient chemicals by physically expelling and subsequently causing avoidance of foods that made the mother ill during pregnancy.
Food aversions during pregnancy