During the first 20 weeks of pregnancy, the maternal metabolic state is best described as what?

During the first 20 weeks of pregnancy, the maternal metabolic state is best described as what?

• A. Catabolic phase with increased glucose production
• B. Anabolic phase with increased insulin production and nutrient storage
• C. Steady state with no major hormonal changes
• D. Dominant reliance on ketones for energy

Answer: (B)

Early pregnancy is an anabolic metabolic state, with the mother’s body building energy stores for fetal growth. Hormones from the placenta, including human placental lactogen along with estrogen and progesterone, stimulate the pancreas to produce more insulin. This higher insulin level promotes uptake of glucose into liver and adipose tissue and its storage as glycogen and fat, aligning with the need to accumulate nutrients for the developing fetus. Because energy is being stored rather than rapidly mobilized, ketone production remains low and glucose remains a central energy source for both mother and fetus. As pregnancy advances, metabolism tends to shift toward a catabolic pattern with greater mobilization of stored nutrients, but in the first half, the emphasis is on an anabolic state driven by increased insulin and nutrient storage.

Early pregnancy is an anabolic metabolic state, with the mother’s body building energy stores for fetal growth. Hormones from the placenta, including human placental lactogen along with estrogen and progesterone, stimulate the pancreas to produce more insulin. This higher insulin level promotes uptake of glucose into liver and adipose tissue and its storage as glycogen and fat, aligning with the need to accumulate nutrients for the developing fetus. Because energy is being stored rather than rapidly mobilized, ketone production remains low and glucose remains a central energy source for both mother and fetus. As pregnancy advances, metabolism tends to shift toward a catabolic pattern with greater mobilization of stored nutrients, but in the first half, the emphasis is on an anabolic state driven by increased insulin and nutrient storage.