In my blog, you'll hear a lot about the stress hormone cortisol. If you have ever listened to a stress reduction briefing, or you exercise regularly, then you are likely aware of this hormone. However, what you might not be familiar with is cortisol's connection to the diseases that make up Metabolic Syndrome X. There is good evidence that cortisol is the "X" in Metabolic Syndrome X.
What is Metabolic Syndrome X?Metabolic Syndrome X describes a mysterious connection between heart disease, stroke, high blood pressure, abdominal obesity, diabetes, and high blood cholesterol. For someone to be diagnosed with Metabolic Syndrome, they must have three or more of the following risk factors: (1)
- Blood pressure equal to or higher than 130/85 mmHg
- Fasting blood sugar (glucose) equal to or higher than 100 mg/dL
- Large waist circumference (length around the waist):
- Men - 40 inches or more
- Women - 35 inches or more
- Low HDL cholesterol:
- Men - under 40 mg/dL
- Women - under 50 mg/dL
- Triglycerides equal to or higher than 150 mg/dL
The most interesting part about these risk factors is that they tend to appear together. For instance, if you are obese, then you are more likely to have (or develop) poor blood sugar control, high blood triglycerides, and high blood pressure. (2) Because these risk factors tend to appear (and disappear) together, they likely have a common cause.
While searching for this cause, I happened to read The Potbelly Syndrome by Russell Farris. It was here that I discovered that cortisol was likely the central cause of Metabolic Syndrome. I now believe that chronic stress (from any source) can cause chronic elevation of cortisol, which can cause serious dysfunction in the body. This dysfunction manifests itself as heart disease, stroke, high blood pressure, abdominal obesity, diabetes, and high blood cholesterol (as well as muscle wasting, low energy, accelerated aging, osteoporosis, suppressed immune system, and cancer).