This 1 Blood Test Predicts Heart Attacks Better than Cholesterol
In a Nutshell
A one-hour oral glucose tolerance test reading of 155 mg/dL or higher predicts diabetes, heart attacks, strokes, and other complications far earlier than fasting glucose or A1C. The International Diabetes Federation has adopted this threshold as pre-diabetes (and 209 mg/dL as diabetes), yet standard guidelines still rely on tests that miss metabolic disease for 5-7 years. At-home 75-gram glucose testing can identify this risk before arterial damage occurs.
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The episode presents a "Dr. Brewer, you were right" discussion about metabolic disease as a major driver of heart disease, heart attacks, and strokes. The measurement approach for metabolic disease is described as fundamentally wrong, requiring a specific test with proper interpretation that most doctors perform incorrectly.
The American Diabetes Association guidelines diagnose diabetes through:
- Fasting glucose of 126 or higher
- A1C measurement
- Oral glucose tolerance test where blood sugar reaches 200 at two hours, confirmed twice
These metrics result in diagnosis 5-7 years later when significant plaque has already developed and heart attack/stroke risk is elevated.
Dr. Brewer has been advocating for more aggressive standards than conventional guidelines. The International Diabetes Federation has now adopted his approach of examining one-hour oral glucose tolerance test numbers. Research supporting this approach spans over 15 years, led by Dr. Bergman and the diabetes foundation.
155 mg/dL at one hour on OGTT indicates pre-diabetes with significant disease risk leading to heart attack, stroke, blindness, and kidney disease.
209 mg/dL at one hour indicates full diabetes diagnosis according to the International Diabetes Federation.
Standard diabetes testing relies on fasting glucose and A1C, which may appear normal while missing underlying metabolic disease. The oral glucose tolerance test measures glucose and insulin levels at fasting, one hour, and two hours after consuming 75 grams of pure sugar. This journey of blood sugar and insulin response cannot be detected by other tests.
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