These MRI scans may well be the two most powerful motivations for heart patients to step away from the Tim Hortons maple dips that I have ever personally witnessed.
They are from a National Geographic feature all about body fat (“Why Are We So Fat?” Newman, Cathy, National Geographic, 00279358, August 2004, Vol. 206, Issue 2). The woman on the left is 5’6″ tall, weighs 250 pounds, and has a Body Mass Index (BMI)* of 40.3 (thus qualifying for a morbidly obese designation) while the other woman is 5’5″ tall, weighs 120 pounds, and has a BMI of 20 (a healthy BMI is between 18.5 and 24.9).
Please note how the ankles of the woman on the left are now tortuously deformed due to the equivalent weight of one entire extra person she’s been carrying around.
According to this National Geographic piece:
“The First Law of Fat says that anything you eat beyond your immediate need for energy, from avocados to ziti, converts to fat. ‘A calorie is a calorie is a calorie,’ says Lawrence Cheskin, director of the Johns Hopkins Weight Management Center, whether it comes from fat, protein, or carbohydrate.
“The Second Law of Fat says that the line between being in and out of energy balance is slight. Suppose you consume a mere 5% over a 2,000-calorie-a-day average. ‘That’s just 100 calories; it’s a glass of apple juice,’ says Rudolph Leibel, head of molecular genetics at Columbia University College of Physicians and Surgeons. ‘But those few extra calories can mean a huge weight gain.’
“Since one pound of body weight is roughly equivalent to 3,500 calories, that glass of juice adds up to an extra 10 pounds (five kilograms) over a year. Alternatively, you’d gain 10 pounds if, due to a more sedentary lifestyle – driving instead of walking, taking the escalator instead of the stairs – you started burning 100 fewer calories a day.
“Our bodies are good at converting food into fat and then hanging on to it. This trait may have helped our ancestors survive when calories were few and far between.
“But fast-forward to the 21st century, when calorie supply isn’t a problem, and genes that favor gaining weight have outlived their usefulness. Evolution betrays us. We store fat for the famine that never comes.
And where that body fat lives on our bodies can make a difference to fat’s role as a serious heart disease risk factor:
- Subcutaneous fat is the fat you can feel if you pinch some skin and tissue around your middle.
- Belly fat (visceral fat) accumulates in your abdomen in the spaces between your organs. This belly or visceral fat surrounding major organs can be a serious health issue. Too much belly fat puts you at greater risk of heart disease, breast cancer and diabetes compared to excess subcutaneous fat.
* Here’s how to figure out your own Body Mass Index (BMI).
♥ This article was on the Heart Sisters Top 10 Most Popular Posts list for 2012 (#7).
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