In women with gestational diabetes, eating most carbohydrates in the morning does not change fasting C-peptide levels compared to eating fewer carbohydrates in the morning, even though insulin sensitivity improves.

For women with gestational diabetes, eating most of their daily carbohydrates in the morning leads to lower insulin resistance compared to eating most carbohydrates later in the day, as measured by a standard blood test.

In women with gestational diabetes, eating most carbohydrates in the morning instead of later in the day does not change total daily calories, carbs, or protein, but is linked to consuming about 9.9 grams more fat per day, which could affect metabolic health.

For women with gestational diabetes, eating either a lot or a little carbohydrate in the morning can both keep blood sugar levels within a healthy range more than 90% of the time, meaning both approaches can meet recommended blood sugar goals even though they affect glucose fluctuations differently.