July 29, 2010

Most Heart Attacks are Preventable

It is now established that arteriosclerosis is reversible and that most cases of heart attacks are preventable (Journal of Cardiovascular Drugs and Therapy, published online June 15, 2010). Most heart attacks occur in people with known risk factors:

Plaques caused by cholesterol:
Fatty plaques are covered by a fibrous cap that shields the fat inside from the bloodstream. Rupture of this cap releases fats from plaques into the bloodstream. The released fat causes clots that block the arteries to cause a heart attack. Heart attacks are not caused by plaques causing progressive narrowing of these arteries. Since the bad LDL cholesterol causes plaques to form, and the good HDL cholesterol prevents plaques from forming and rupturing, people with high LDLs or low HDLs are at high risk for heart attacks.

Most people could control cholesterol with diet. If this diet does not lower your LDL cholesterol below 100 or raise your HDL cholesterol above 40, your doctor may prescribe medications.

Inflammation:
Your immunity is supposed to be good for you. When bacteria or viruses enter your body, you make proteins and cells to kill them. As soon as the germ is gone, your immunity is supposed to stop making large amounts of these antibodies and cells. However, if your immunity stays active, these white blood cells continue to produce cytokines that are supposed to dissolve the membranes of bacteria. Instead, they dissolve the caps of plaques to release fat from plaques into your bloodstream to cause clots that block arteries to cause heart attacks. Your doctor can diagnose an overactive immunity with blood tests called CRP (above 1) or Sed Rate (above 15).

Any chronic infection can turn on your immunity to increase risk for a heart attack. Check with your doctor if you have symptoms of any infection, such as bladder problems (burning on urination, frequency, night-time urination, urgency when your bladder is full), stomach problems (belching, burping, burning in your abdomen), a chronic sore throat, chronic cough, or chronic joint or muscle pains.

Metabolic syndrome (pre-diabetes) or diabetes:
People with high rises in blood sugar are at high risk for heart attacks and strokes, even if they are not diagnosed with diabetes. A high rise in blood sugar can cause plaques to rupture. You can tell if you have high rises in blood sugar if you store fat in your belly, have small buttocks, a HDL cholesterol below 40, an LDL cholesterol above 100, or triglycerides above 150. When your blood sugar rises too high, your pancreas releases large amounts of insulin (=high insulin) which causes fat to be deposited in your belly (=large belly). Insulin converts sugar to triglycerides (=high triglycerides). Then you use up your good HDL cholesterol to carry triglycerides from your bloodstream into your liver (=low HDL).

If you have metabolic syndrome or diabetes:
1) Check your vitamin D3 level. If it is below 75 nmol/L, you need more sunlight or vitamin D pills. Lack of vitamin D blocks insulin receptors to raise blood sugar levels.
2) Avoid refined carbohydrates. Altered carbohydrates cause higher rises in blood sugar. The worst offenders are flour and sugared beverages.
3) Restrict meat from mammals. The saturated fats in meat may block insulin receptors.
4) Eat plenty of vegetables and fruits. They do not cause high rises in blood sugar.
5) Lift weights. Larger muscles draw more sugar from the bloodstream.
6) Lose excess fat. Full fat cells produce hormones that prevent your cells from responding to insulin.
7) Exercise. Contracting muscles remove sugar from your bloodstream without needing insulin.

Other risk factors to avoid:
• Do not smoke or live with a smoker.
• Do not take more than two alcoholic drinks a day (a drink is a 5-ounce glass of wine, 12 ounces of beer, or 2/3rds of a shot glass of alcohol).


July 27, 2010

Twitter Weekly Updates for 2010-07-27

July 26, 2010

B Complex Vitamins

Many people take B Complex Vitamins to try and improve their health including me. I thought I would do a bit of research so that we could all be a bit more aware of what the B Complex Vitamins are for, how much B Complex to get, and the problems with deficiencies. What are the [...]

Post from: Fitness Tips For Life

B Complex Vitamins


Zinc

Zinc is a nutrient that people need to stay healthy. Zinc is found in cells throughout the body. It helps the immune system fight off invading bacteria and viruses. Why Do you Need Zinc? The body also needs zinc to make proteins and DNA, the genetic material in all cells. During pregnancy, infancy, and childhood, [...]

Post from: Fitness Tips For Life

Zinc


July 25, 2010

Sitting is Hazardous to your Health

Researchers at the University of South Carolina found that men who spent more than 23 hours a week watching TV and sitting in their cars had a 64 percent greater chance of dying from heart attacks than those who sat for fewer than 12 hours a week (Medicine and Science in Sports and Exercise, May 2010).

Many of the men who suffered heart attacks also exercised regularly. Their exercise programs did not protect them from the heart attack-causing effects of sitting in cars or while they watched television. This month, a review of the world's literature shows that exercise may not protect you from the life- shortening effects of prolonged sitting (Exercise and Sports Sciences Reviews, July 2010), and many studies show that animals (rats and mice) that do not have exercise wheels in their cages develop insulin resistance, have higher blood fat levels, are fatter, and die earlier than those who have the exercise wheels.

Now we have to explain:

1) Why sitting causes premature death and heart attacks:
• Resting muscles require insulin and respond poorly to insulin in drawing sugar from the bloodstream.
• North Americans eat a lot of refined carbohydrates that cause a high rise in blood sugar.
• A high rise in blood sugar causes sugar to stick to cell membranes, which kills these cells to cause heart attacks, strokes, premature death and nerve damage.

2) How exercise prevents premature death and heart attacks:
• Contracting muscles prevent a high rise in blood sugar by pulling sugar from the bloodstream without needing insulin.

3) Why exercise does not protect many people who spend a lot of time sitting in one place:
• Contracting muscles draw sugar maximally from the bloodstream during exercise and for up to an hour after you finish and tapers until you lose all of its benefit at about 17 hours (Am J Clin Nutr, 2008 July; 88(1): 51-57; Am J Physiol Regul Integr Comp Physiol 1983;245(5):R684-R688; Journal of Applied Physiology, February 2010).
• While you sit, your resting muscles do not draw sugar effectively from the bloodstream and 17 hours after you finish exercising, you have lost this benefit of exercise.

4) Why intense exercise is more effective than more casual exercise in:
• Preventing and treating diabetes (Circulation, July 2008).
• Preventing heart attacks in obese people without weight loss (MSSE, Oct, 2006).
• Preventing heart attacks than exercising more frequently (MSSE, July, 1997).
• Reducing belly fat (MSSE, November 2008) (storing fat in your belly is a sign of inability to respond to insulin).
• Preventing premature death (Heart, May 2003).
• Preventing metabolic syndrome and heart attacks (Exercise and Sports Sciences Reviews, July 2009).
• Raising HDL (good) cholesterol (Journal of Strength and Conditioning Research, March 2009).

Further data to show that intense exercise is superior to casual exercise:
• The faster aged runners run, the lower their blood pressure, cholesterol, and blood sugar levels (MSSE, October 2008, Arch Int Med, 1999;159(8):882).
• High intensity interval training maximally improves every conceivable measure of heart function and heart strength. (Exercise and Sports Sciences Reviews, July 2009).

Caution: Intense exercise can cause heart attacks in people who already have blocked arteries.