Blood Sugar Rise and Fall After Eating

Carbohydrates, or carbs, are sugars and starches in foods like bread and fruit. After you eat, your body breaks carbs down into glucose. Glucose enters your blood, so blood sugar rises.

Then insulin, a hormone from your pancreas, moves glucose into your cells. As it does, blood sugar tends to fall.

The size and speed of the rise depend on the food you eat. The amount of carbs matters too. A bigger carb portion usually means more glucose in your blood.

Fat, protein and fiber slow the rise, like a slow drip. Fiber is the part of plant foods your body cannot digest. Juice tends to raise blood sugar fastest, like a fast pour.

One reading shows your blood sugar at one moment. It does not show the whole pattern of your day. Checking at the same times helps show patterns.

Normal patterns differ from person to person. Ask your doctor how often to check, and at which times.

Key takeaways

• Blood sugar usually rises after eating, then tends to fall as insulin moves glucose into cells.
• Fat, protein and fiber slow the rise, and juice tends to raise it fastest.
• One reading shows one moment, and checks at consistent times show patterns.

Try it

This week, write down the time and what you ate at one meal each day. Look back at the end of the week for meals that matched higher or lower numbers.