During pregnancy while taking weight loss medication, if the doctor assesses that the pregnancy can be maintained, the pregnant woman should stop using the medication. This is because some weight loss medications can penetrate the placenta, potentially affecting the growth and development of the fetus adversely.
The mainstream weight loss drugs on the market can be broadly divided into two categories: one type works by suppressing appetite, such as orlistat; the other type stimulates the central nervous system, including fenfluramine and phentermine. Both of these types of medications carry risks of adverse effects on the fetus.
Appetite suppressants primarily help in weight loss by limiting the absorption of fats in the gastrointestinal tract and are relatively safe. However, prolonged use may lead to malnutrition and vitamin deficiencies, making them unsuitable for use during pregnancy.
As for weight loss drugs that affect the central nervous system, they promote weight loss by increasing satiety and speeding up metabolism. However, due to their potential teratogenic and toxic effects, they are not suitable for women planning pregnancy, already pregnant, or in the breastfeeding period.
Even with doctor permission to continue the pregnancy, pregnant women should be vigilant about the potential risks of medication to the embryo, undergo regular prenatal checks, and strictly adhere to medical guidance for management and treatment. Additionally, ensure a balanced diet, intake of essential nutrients like iron, folic acid, and B vitamins is crucial for the health of both the mother and the baby.
