What are normal blood sugar number levels?

Normal blood sugar levels are below 100 milligrams per deciliter after fasting and below 140 two hours after a meal, according to WebMD. In people who are not diabetic, these numbers are often lower.

Blood sugar levels vary throughout the day and are often lowest just before mealtime. In some people, the level drops into the 60s before meals, according to WebMD. The body has regulatory systems that maintain the blood sugar levels in healthy individuals. Even with a diet or prolonged fast, the liver converts stored fat into sugar to maintain the blood sugar level in the 60s. When diabetics take medication and do not eat, it is possible for their blood sugar levels to drop dangerously low.