Welcome to the Dr. Berg's Healthy Keto and Interminute Fasting Podcast, where Dr. Berg

takes you on the journey for the truth about getting healthy and losing healthy weight.

Hey guys, in this video we're going to answer the question, what is normal blood sugar

levels? A lot of times you've been told that it's between 80 and 90, but it really, according

to the American Diabetes Association, it really depends on what year you're looking

at because in 1925 it was 100, basically between 90 and 120. That was normal. In 1968

it was 130. Then in 1978 it was 115 milligrams per decilator. Then in 1997 to 2003 it was

110 milligrams per decilator. Then between 2004 and 2007 it's back to 100. My opinion is

that you need it between 80 and 90, but up to 100. Here's the thing. There's an amazing

book that I'm going to recommend. You can get it as a Kindle. It's called Diabetes Epidemic

in You by Joseph Kraft MD. Here's a guy that tested over 14,000 people over 25 years. He

evaluated their fasting blood glucose levels and their glucose tolerance test and their

insulin levels. He found something fascinating. He actually describes three patterns of insulin.

Because he actually checked fasting insulin and then post meal insulin levels. Two, three,

four, I think five hours. He found something quite incredible back in the 70s actually.

This is what he found. The absolute best indication for pre-diabetes is not high fasting

blood sugars. It is high fasting insulin levels. In other words, you could have normal fasting

blood glucose levels and have high insulin at the same time. In fact, that was the case. Basically

observe that insulin, high insulin comes first. Then it's the high sugar. But here's the problem.

The doctors aren't testing the insulin levels. It's one of the best indicators for pre-diabetes.

I mean, so check this out. When you have high insulin levels, what do you think that's going to

do to your blood sugars? It's going to bring it down, not up. So high sugar is not going to show up

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