Though one of the most popular tools used today to determine whether someone is at a healthy weight or not is the BMI, body fat and lean muscle tissue don't figure into the equation. This has led many experts to discount BMI as an archaic measurement that isn't accurate for many people. What is BMI, and why is it a good measure for some, maybe, and completely wrong for others?
BMI, or body mass index, was created in the early 1800s by Adolphe Quetelet. Because of that, it's sometimes called the Quetelet index. It's nothing more than a way of comparing a person's weight to his or her height, and determining if his or her weight falls into a healthy and normal range. The BMI is still used today pretty much as it was when Quetelet invented it.
The formula for figuring BMI (body fat, bone and frame size, muscle and body type aren't included in that) is this: Take your height in meters squared (your height times itself) and divide your weight in kilograms by that number. For example, if I'm 5 feet tall, that's about 1.5 meters. To square that number, take 1.5 times 1.5. The result of that is 2.5. So if I weigh 120 pounds, that's about 54.5 kilograms. Divide 54.5 by 2.5 and I get 21.8 as my BMI. The normal weight range is from 18.5 to 24.9, so 21.8 is classified as a normal weight. Underweight is considered 18.5 and below, while overweight people will calculate a BMI of 25 to 29.9. A BMI of 30 or greater indicates obesity.
BMI, body fat and general health can all be used as signs of how fit a person is. But where general health is pretty self-explanatory and the percentage of body fat clearly shows whether a person gets enough exercise or not, BMI is a bit trickier.
People with a lot of muscle don't show accurate BMI readings. Because muscle weighs so much heaver than fat but takes up less space, a relatively small statured person can carry a lot of muscle weight without looking huge. BMI doesn't take that into account. Football players, professional wrestlers, bodybuilders, and virtually any athlete who has a lot of muscle is going to measure as overweight and even obese according to the BMI. So it's not accurate for them. Is it accurate for everyone else?
The answer to that is yes, and no. It depends on you. The BMI typically doesn't show an accurate result for children. And extremely tall or large-framed people will show overweight or obese classifications more easily because of the extra weight from their bones and muscles. So for very short, tall or muscular people, the BMI appears to not be a good tool.
There's also no distinguishing between men and women in the BMI. Body fat is more natural for women who are supposed to have more than men, so some sort of distinction in the measurement of the sexes would help the BMI's accuracy.
Friday, September 26, 2008
Wednesday, September 3, 2008
Tips For You On A Diet For Lowering High Cholesterol And Losing Weight
If you have high cholesterol it is important to get yourself on a diet for lowering cholesterol and losing weight. Many Americans worry about their cholesterol levels, especially those who are over weight. In most cases the first step in resolving your high cholesterol and shedding those extra pounds; is changing your diet. You will discover some pretty convincing evidence, in this article, which will convince you, to improve your health by losing weight and lowering your cholesterol.
A recent study completed by The School of Medicine at Stanford University showed that with both diet and exercise, you can significantly reduce your cholesterol and get rid of the extra weight. The study was done with over 300 men and women with high cholesterol. In order to control the groups the first group was put on a low fat diet. Then the second was put on the same diet with an exercise program.
After a year the group with both diet and exercise had lower cholesterol. The group that didn’t incorporate exercise didn’t have a loss as significant as the first group.
Eating a low cholesterol diet has shown to lower cholesterol by 8% to 20%. There are a few low cholesterol diets that have proven to work well. These diets include; the Dash Diet, The South Beach Diet, The Ultra Metabolism Diet, and The Weight Watchers Diet. Every one of these diets has online programs or books to guide you through the diet with menu plans and instructions.
As an addition to your low cholesterol diet you should make sure to eat plenty of Vitamin C. Vitamin C is used to fix natural cracks and fractures in your arteries. If you don’t get enough Vitamin C your body will substitute it with cholesterol. If you make sure to get enough of the vitamin as part of your low cholesterol diet, your liver will not be forced to produce excess cholesterol.
In another study done, with sixty heart bypass surgery patients, it was shown that eating grapefruit everyday lowers your cholesterol. The study had the patients divided into three groups. One group was given red grapefruit. One group was given white grapefruit.
However the last group was not given any grapefruit and had no diet restrictions. The study showed that the groups that ate grapefruit regularly as part of a low cholesterol diet showed a significant drop in cholesterol. Whereas the group without restrictions, which didn’t eat any grapefruit, didn’t show any drop in cholesterol.
Additional studies have shown that women that have eaten five to six smaller meals had lower cholesterol and better weight control; than those that ate fewer larger meals. If you eat many small meals with a low cholesterol diet and fewer calories you will be able to lower your cholesterol by about 5% and drop your weight.
There is no question, having high cholesterol and being over weight, is very dangerous to your health. However, if you suffer from being over weight and high cholesterol there are some simple things you can do to lower both your weight and high cholesterol level.
As the above information indicated it doesn’t have to be complicated. Simply get yourself on a diet for lowering high cholesterol, combine it with a good exercise program and you are on your way to better health.
A recent study completed by The School of Medicine at Stanford University showed that with both diet and exercise, you can significantly reduce your cholesterol and get rid of the extra weight. The study was done with over 300 men and women with high cholesterol. In order to control the groups the first group was put on a low fat diet. Then the second was put on the same diet with an exercise program.
After a year the group with both diet and exercise had lower cholesterol. The group that didn’t incorporate exercise didn’t have a loss as significant as the first group.
Eating a low cholesterol diet has shown to lower cholesterol by 8% to 20%. There are a few low cholesterol diets that have proven to work well. These diets include; the Dash Diet, The South Beach Diet, The Ultra Metabolism Diet, and The Weight Watchers Diet. Every one of these diets has online programs or books to guide you through the diet with menu plans and instructions.
As an addition to your low cholesterol diet you should make sure to eat plenty of Vitamin C. Vitamin C is used to fix natural cracks and fractures in your arteries. If you don’t get enough Vitamin C your body will substitute it with cholesterol. If you make sure to get enough of the vitamin as part of your low cholesterol diet, your liver will not be forced to produce excess cholesterol.
In another study done, with sixty heart bypass surgery patients, it was shown that eating grapefruit everyday lowers your cholesterol. The study had the patients divided into three groups. One group was given red grapefruit. One group was given white grapefruit.
However the last group was not given any grapefruit and had no diet restrictions. The study showed that the groups that ate grapefruit regularly as part of a low cholesterol diet showed a significant drop in cholesterol. Whereas the group without restrictions, which didn’t eat any grapefruit, didn’t show any drop in cholesterol.
Additional studies have shown that women that have eaten five to six smaller meals had lower cholesterol and better weight control; than those that ate fewer larger meals. If you eat many small meals with a low cholesterol diet and fewer calories you will be able to lower your cholesterol by about 5% and drop your weight.
There is no question, having high cholesterol and being over weight, is very dangerous to your health. However, if you suffer from being over weight and high cholesterol there are some simple things you can do to lower both your weight and high cholesterol level.
As the above information indicated it doesn’t have to be complicated. Simply get yourself on a diet for lowering high cholesterol, combine it with a good exercise program and you are on your way to better health.
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