How does heart disease cause high blood pressure?

Narrowed blood vessels leave a smaller opening for blood to flow through. It is like turning on a garden hose and holding your thumb over the opening. The smaller opening makes the water shoot out with more pressure. In the same way, narrowed blood vessels lead to high blood pressure. Other factors, such as kidney problems and being overweight, also can lead to high blood pressure.

Many people with diabetes also have high blood pressure. If you have heart, eye, or kidney problems from diabetes, high blood pressure can make them worse.

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A smaller opening makes the water pressure higher. In the same way, clogged blood vessels lead to high blood pressure.

You will see your blood pressure written with two numbers separated by a slash. For example: 120/70. Keep your first number below 130 and your second number below 80.

If you have high blood pressure, ask your doctor how to lower it. Your doctor may ask you to take blood pressure medicine every day. Some types of blood pressure medicine can also help keep your kidneys healthy.

To lower your blood pressure, your doctor may also ask you to lose weight; eat more fruits and vegetables; eat less salt and high-sodium foods such as canned soups, luncheon meats, salty snack foods, and fast foods; and drink less alcohol.

To lower blood pressure, get to a healthy weight.

source: http://diabetes.niddk.nih.gov/dm/pubs/complications_heart/index.htm