How much FAT do you really carry around with you every day..
find out now
Enter your weight (in lbs), height (in feet and inches) waist
(in inches), sex and age. Then, press the Calculate! button.
Not familiar with feet, inches and pounds?
Convert your height from cm to feet
Convert your weight from kgs to lbs
Waist is usually
measured at one inch above the navel.
Body-Mass Index (BMI)
The body-mass index (BMI) is calculated by dividing your
weight (in kg) by the square of your height (in meters). A BMI
greater than 25 may indicate that you are overweight, while a BMI
greater than 30 generally indicates obesity.
A BMI of 27.8 for men and 27.3 for women is the cutoff point for
obesity used in the National Health and Nutrition Examination Survey
(NHANES II). The National Academy of Sciences' diet and health report
suggests the following normal BMI ranges:
-
Age |
Normal BMI Range |
45 to 54 years |
22 to 27 |
55 to 65 years |
23 to 28 |
Over 65 years |
24 to 29 |
(Department of Health and Human Services Consensus Conference on
Obesity, April,1 1992)
A BMI from 20 through 26: desirable for most middle-aged
adults. Nonsmokers with a consistent BMI within this range have the
lowest risk of disease and premature death. In this category, weight
gain can be avoided through moderate eating habits and exercise.
A
BMI from 27 through 29: moderately overweight, carries a slightly
increased risk of weight-related health problems, such as high blood
pressure, high blood cholesterol, heart disease and adult-onset
diabetes. People in this group have the hardest decision to make
about reducing, given the potential health risks of weight loss. To
prevent the development of weight-related health problems, most
people in this category should avoid gaining additional pounds by
adopting a low-fat diet and a routine of regular exercise. Weight
loss for cosmetic reasons is very common here.
A BMI of 30
through 40: truly overweight, the risk of developing heart
disease and other weight-related conditions rises sharply. Most
people should lose weight in this category. Adult-onset diabetics in
this category should definitely reduce, since blood-sugar control
improves with weight loss.
A BMI of 40 or more;
severely overweight, you are in great danger of dying early. 80% eat
in frequent binges. Secret eating is common. Best weight loss
technique is often a fasting diet. Benefits of losing weight clearly
outstrip any dangers.
Hamilton and Whitney's Nutrition Concepts and Controversies provides the following interpretation:
-
Men |
Women |
Risk Factor |
<20.7 |
<19.1 |
Underweight. The lower the BMI the greater the
risk |
20.7 to 26.4 |
19.1 to 25.8 |
Normal, very low risk |
26.4 to 27.8 |
25.8 to 27.3 |
Marginally overweight, some risk |
27.8 to 31.1 |
27.3 to 32.2 |
Overweight, moderate risk |
31.1 to 45.4 |
32.3 to 44.8 |
Severe overweight, high risk |
> 45.4 |
> 44.8 |
Morbid obesity, very high risk |
-
The National Institutes of Health provided the following
guidelines:
Women: Desirable body mass is 21-23. Obesity (20 percent
above the desirable range) begins at 27.5. Serious obesity (40%
above) begins at 31.5.
Men: Desirable body mass is 22 to 24. Obesity begins at
28.5, and serious obesity begins at 33.
People
with a BMI of 25 to 29.9 are considered overweight, while those with
a BMI of 30 or above are obese.
From Dietary Guidelines provided by the US Department of
Agriculture and the Department of Health and Human Services, 2000.
-
18.5 - 25.0 kg/m2 |
Healthy Weight |
25.0 - 29.9 kg/m2 |
Overweight |
> 30.0 kg/m2 |
Obese |
-
Waist-to-Height Ratio (WHtR)
The waist-to-height ratio (WHtR) is calculated by dividing
your waist size by your height. The WHtR may give a more accurate
assesment of health for serious athletes, especially body builders,
who have a higher percentage of muscle and a lower percentage of body
fat, or for women who have a "pear" rather than an "apple"
shape. A WHtR under 50.0% is generally considered healthy.
Current guidelines, as given by the World Health
Organization, or the National Heart, Lung and Blood Institute, only
give values for waist circumference. Those at substantially increased
risk have the same risk as someone with a BMI of 30. Assuming the
average male is 5' 9", and the average female is 5' 4",
here are the waist cutoff values, and the corresponding WHtR
-
|
Increased Risk
|
Substantially
Increased Risk |
|
Waist (WHtR) |
Waist (WHtR) |
Men |
37.0" (53.6%) |
40.2" (58.3%) |
Women |
31.5" (49.2%) |
34.6" (54.1%) |
Here are some values of WHtR that I have come across:
-
Subjects |
WHtR |
Barbie Doll |
25.0% |
Ken Doll |
36.0% |
Female College Swimmers |
42.4% |
Male College Swimmers |
42.8% |
Willoughby Ideal |
45.8% |
WHO Increased Risk Females |
49.2% |
General Healthy Cutoff |
50.0% |
NHANES Risk Equivalent to BMI of 25 |
51.0% |
WHO Increased Risk Males |
53.6% |
WHO Substantially Increased Risk Females |
54.1% |
NHANES Risk Equivalent to BMI of 30 |
57.0% |
Willoughby Obese |
57.7% |
WHO Substantially Increased Risk Males |
58.2% |
Conclusions about the NHANES data were lifted from Am J
Clin Nutr 2002 76 743. An interesting perspective on height-to-waist
ratio is provided in Int J Obes Relat Metab Disord. 2003 May; 27(5):
610-6. Also see Prev Med. 2005 Feb; 40(2): 216-20. Hsieh SD, Muto T.,
The superiority of waist-to-height ratio as an anthropometric index
to evaluate clustering of coronary risk factors among non-obese men
and women.
As your weight changes, you can expect to lose about 1"
from your waistline for each 6-8 lbs of weight loss.
True facts
Eat fish, lean meats, skinless poultry, eggs, tofu, nuts, yogurt, and low-fat cheeses. Include plenty of leafy green vegetables, colorful vegetables, and berries to meet the carbohydrate allowance. There is a wide selection of non-starchy vegetables that you can use in your menus, such as: asparagus, bell peppers, broccoli, Brussels sprouts, cabbage, cauliflower, celery, collard greens, cucumber, eggplant, garlic, green beans, green peas, kale, leeks, lettuce, mushrooms, mustard greens, olives, onions, parsley, spinach, and tomato.
Avoid starchy and sugary foods such as pasta, white bread, potatoes, white rice, and sugar-rich foods like candies, sodas and cakes. Avoid greasy or high-fat foods, specially deep fried foods or breaded fried foods such as fried chicken with biscuits, nachos, Alfredo sauce, oily salad dressings, and pizza. Remember that every tablespoon of fat has 125 Calories. Avoid alcoholic beverages because they are high in calories and non-nutritive. Above all, when you shop for food, read the list of ingredients in the labels and don't buy any products that contain hydrogenated fats. Eliminate any foods that contain hydrogenated fats or partially hydrogenated fats from your diet. These artificial fats can only bring you an early death. Your body needs protein to build muscles and hormones, good natural fats and essential fatty acids to maintain your brain and cell membranes, and fresh fruits and vegetables with essential micronutrients and enough fiber to keep your digestive system regular. Any extra energy that your body needs should come from the fat that you have stored. This is how you want to lose weight -- by using up your stored fat while toning up your muscles.
Exercise before breakfast. Your morning exercise before breakfast is the most important. Carbohydrates are consumed while you sleep. In the morning, your carbohydrate reserve is low. Experiments show that exercising in the fasted state burns twice the amount of lipids than exercising after a meal. A 15-minute exercise session before eating will cause your body to adjust by using more fat for energy. Following your workout, wait until you are hungry and then eat a high-protein breakfast that is low in carbohydrates (e.g., eggs, lean ham, and a bowl of berries with a tablespoon of plain yogurt) to start restoring your muscle tissue while your body continues using your stored fat. If you are trying to cut down on dietary cholesterol, you can use only the egg whites instead of whole eggs as a source of protein. Keep in mind that exercise does not burn enough calories to make up for overeating. You still need to reduce what you eat. Exercise is important during a weight loss program to keep the muscles toned and to prevent bone loss.
Mental Attitude. You may be thinking, "I will be hungry all the time if I cut out 300 Calories from my diet". The psychological aspects of dieting are as important as the diet itself. Yes, you are going to feel hungry when you diet. But the most important part is knowing that you are not going to starve to death or lose muscle tissue when your diet exceeds the minimum requirements of protein per day. You can only starve to death if you do not eat any food for about 30 days. Dieting involves sacrifice, whether you do it for health reasons or to improve your looks. Dieting is a struggle to do what you know is right instead of indulging in culinary temptations. You are not going to lose weight if you snack on doughnuts, eat a whole pizza for supper, or sit with a bag of greasy chips and eat them until they are all gone. Dieting is self-denial as a test of your personal determination and spiritual discipline. Dieting requires breaking bad eating habits, reading labels when you shop for food, and eating small portions of nutrient-rich, balanced meals.
Basal Metabolic Rate (BMR)
The basal metabolic rate is calculated according to:
For men: BMR = 13.75 weight(kg) + 5.003 height(cm) - 6.775 age +
66.5.
For women: BMR = 9.563 weight(kg) + 1.850 height(cm) -
4.676 age + 655.1.
The basal metabolic rate is your energy expenditure without any
contribution from exercise or digestion. Another term used is the
resting energy expenditure (REE), which may also include energy used
in digesting food.
Generally, it is inadvisable to ingest fewer calories than your
basal metabolic rate. Note that BMR is given in kcals/day. The usual
term of calories in food actually refers to kilocalories.
Body Fat
The percentage body fat is calculated for males as
100*(-98.42 + 4.15*waist - 0.082*weight)/weight and for females as
100*(-76.76 + 4.15*waist - 0.082*weight)/weight.
The body fat calculation is based both on weight and waist size,
and is exquisitely sensitive to the value for waist. If you lower the
value for the weight without changing the waist, the calculation
considers this as a loss of muscle mass, and hence the percent body
fat goes up. Since it’s difficult to measure waist size accurately,
this calculation is not useful when evaluating small changes in body
weight.
The percentage of body weight considered "essential fat"
is around 4% for men and 10% for women. The American Dietetic
Association recommends that men have 15-18% body fat and women have
20-25% body fat. Healthy male athletes might be as low as 5-12% body
fat, and healthy female athletes could be as low as 10-20%. The
American Council on Exercise recommends men's body fat should be
6-25%, and women's should be 14-31%.
Surface Area
The body surface area is calculated as sqrt (height x
weight / 3131), the Mosteller formula, with the weight in lbs and the
height in inches.
Willoughby Athlete Weight
and Waist
The Willoughby athlete weight is calculated by
dividing the cube of the height (in inches) by 1906 [Thanks to Konrad
Balcerak for spotting a mistake in the text prior to August 2006].
The Willoughby athlete waist is calculated by multiplying the
height by 0.4584.
David P
Willoughby, who was a champion body builder in the early
twentieth century, performed extensive anthropometrics measurements
on highly-conditioned (male) athletes and found a direct
proportionality between waist and height. His ideal form had a WHtR
of 45.8%. Willoughby also tabulated data for the morbidly obese, and
found the same proportionality between waist and height, but with a
WHtR of 57.7%.
Interestingly, although in the Metropolitan Life Tables
the weight values are proportional to the square of the height (in
accordance with the calculation of Quetelet's Index or BMI), in
Willoughby's data the weights are proportional to the cube of the
height (in accordance with Rohrer's Index).
The Willoughby athlete weight is then the average ideal
weight for male athletes; strength-trainers may weigh more, while
endurance athletes will weigh less. Are you a Willoughby athlete? A
check on this is to compare your waist measurement to the Willoughby
athlete waist calculation.