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The recommended frequency for meals and snacks for a pregnant woman with diabetes focuses on maintaining stable blood glucose levels throughout the day. Eating three small to moderate meals along with 2 to 4 snacks helps to balance nutrient intake and manage blood sugar levels effectively. This approach can prevent the spikes and troughs in glucose that often occur with fewer, larger meals.

During pregnancy, metabolic demands increase, and frequent, smaller meals help in sustaining energy levels and minimize the risk of gestational diabetes complications. This eating pattern provides consistent fuel for both the mother and the developing fetus, nourishing them throughout the day while also accommodating the body's changing insulin sensitivity.

Larger meals can be associated with larger postprandial (after-eating) blood glucose increases, which may be more challenging to control for pregnant women with diabetes. Having just one meal with multiple snacks would not provide the necessary nutrient distribution or energy levels that are essential for pregnancy. A diet that consists only of large meals would likely lead to inadequate nutrition and glucose control. Thus, the structure of three meals and 2 to 4 snacks is the most beneficial and aligns with dietary management goals for pregnant women with diabetes.