The answer is SIMPLE. When you eat a high-carbohydrate (High Glycemic) meal for lunch, your body responds to the increased glucose, forcing the pancreas to secrete an increased amount of INSULIN. Insulin's purpose is to take the excess glucose out of the bloodstream and STORE FAT. What happens is the excess insulin will cause your blood sugar levels to drop and the primary source of fuel for the brain, GLUCOSE, decreases as does overall MENTAL CAPACITY!

"Hyperinsulinemia", which is the constant elevated levels of insulin, leads to HBP in 3 ways:

1. Excess levels of insulin directly stimulate your sympathetic nervous system and cause your heart to beat faster, blood vessels to narrow, and blood pressure levels to rise.
2. Hyperinsulinemia helps to regulate salt levels in your blood. The higher your insulin levels, the more salt you retain. The more salt you retain, the more water is kept in your bloodstream.
3. Hyperinsulinemia narrows the openings in the arteries through which your blood flows. High levels of insulin can stimulate the production of cholesterol in the liver and the buildup of plaque in the walls of arteries. The space for blood flow is decreased, and again, blood pressure rises.

Again, elevated insulin levels play a "trick" on your body! High levels of insulin:

1. Cause food, in general, to taste especially good
2. Make some foods taste very sweet
3. Cause recurring cravings for cetain foods (carb cravings)

This is insulin's way of enticing you to take in energy. The high-carbohydrate food you eat is changed into blood sugar and, in the presence of hyperinsulinemia, is then converted into blood fat by your liver. Depending on how much insulin remains in your bloodstream and how resistant to insulin your body's cells have become, the fat in your blood may remain for a while, only to be "stored away" in the fat cells. Even then, hyperinsulinemia can do damage, for if insulin levels remain high, the FAT is "locked" into your fat cells, making it easy to GAIN WEIGHT but difficult to lose it! And, besides weight problems, these constant elevated levels of insulin cause the pancreas to diminish its ability to produce insulin; and you know what that leads to, right? Type II Diabetes, otherwise know as "adult-onset" Diabetes! Even the American Heart Association has recently issued a press release announcing the discovery of an important new heart disease risk factor----high levels of insulin! In its journal, "Circulation," they state "...over 22 years of follow-up, the predictive power of insulin levels was of the same magnitude as that of cholesterol levels." The AHA then added "when compared to other risk factors, insulin levels were the most statistically significant predictor of heart attack risk."