
Say anything nasty about sugar and folks will swallow it. Sugar caused the recession. Sugar keyed your car. Sugar’s crazy—it knifed my cousin down at the corner bar last Saturday night. Somebody should drop a safe on sugar. Well, maybe.
It’s true that sugar is insidious—diabolical even. It's hidden in countless processed foods. It certainly contributes to the obesity crisis. It makes people fat and diabetic. These claims are correct—to a limited and oversimplified extent. Sugar doesn't point a gun to our heads and force us to eat it. It's only as big a bogeyman as we make it out to be.
You need some truth about sugar. It's too important. The sugar in your body,
glucose, is a fundamental fuel for your body and brain. The health threat to you arises from a very personal level. Sugars taste good. Sweetened foods tend to make you overeat. That threatens the energy balance in your body.
Today's post will provide you with a few facts about the sweet stuff hiding in some of your favorite meals and drinks. The next time you hear that sugar's bad, you won’t be tempted to drag sugar behind a dumpster and kick the crap out of it. The fact is, you may be the one who’s out of line.
Sugar and Diabetes
Sugar doesn't cause diabetes... Too much sugar does. Diabetes means your body can’t clear glucose from your blood stream. When glucose isn’t processed quickly enough, it destroys tissue. People with type 1 diabetes were born that way—sugar didn’t cause their diabetes. Excessive weight gain in children and adults can cause
metabolic syndrome, which leads to type 2 diabetes. That’s what diabetes is all about—being unable to eliminate glucose. The negative effect of eating a lot of sugar is a rise in glucose. A normal pancreas and normal insulin receptors can handle it, clear it out, or store it in some packaged form, like fat.
What matters: Overeating forces your pancreas to work overtime cranking out insulin to clear glucose. In today’s world, it’s certainly possible that the unprecedented increase in sugar and starch consumption leads to pancreatic burnout. Researchers can’t be sure, because everyone’s body and eating habits are different. That makes generalization iffy. One thing for sure is that the rise in sugar consumption over the past 100 years is unprecedented.
Your job: Drop your excess pounds if you’re overweight and watch your sugar intake. Research has shown for years that dropping 5%-7% of your body weight can reduce your odds of developing diabetes.
Sugar and High-Fructose Corn Syrup (aka Corn Sugar)
Simply avoiding Corn Sugar won’t save you from obesity. In the 1970s and 1980s, the average American’s body weight increased in tandem with the food industry’s use of high-fructose corn syrup (HFCS), a staple because it’s cheap. Unfortunately, it's not a smoking gun. This is a correlation, not a causation. Obesity is about consuming too many calories. It just so happens that a lot of overweight people have been drinking HFCS in sodas and eating foods that are high on the glycemic index—sweet snacks, white bread, and so forth. The calorie totals are huge, and the source just happens to be sugar-based. The food industry knows this. That's why last year they went from calling HFCS to just corn sugar and trying to tell you that it's
natural and safe.
The effect of a high-glycemic food can be lessened by adding fat and protein. Spreading almond butter (protein and fat) on a bagel (starch, which becomes glucose in your body), for instance, slows your body’s absorption of the sugar, but not by much.
What matters: We can demonize food manufacturers because they produce junk food with enough salt and sugar to make us eat more of it than we should—or even want to. It comes down to how much we allow down our throats. A practical guide for anyone is weight. If your weight is under control, then your calorie intake across the board is reasonable. If your weight rises, it’s not. That’s more important than paying attention to any specific macronutrient. Still, skinny isn’t always safe. (Keep reading for more details.)
Sugar and FatToo much sugar fills your blood with fat. Studies dating back decades show that eating too much
fructose, a sugar found naturally in fruit and also added to processed foods, raises your blood
lipid levels. While the relatively modest quantities in fruit shouldn’t worry you, a University of Minnesota study showed that the large amounts of fructose we take in from processed foods may prove especially nasty:
Men on high-fructose eating plans had 32% higher triglycerides than men on high-glucose eating plans. Why? Your body can’t metabolize a sweet snack as fast as you can eat it. So your liver puts some of the snack’s glucose into your blood-stream, or stores it for later use. If your liver’s tank is full, it packages the excess as triglycerides. The snack’s fructose goes to your liver as well, but instead of being deposited into your bloodstream, it’s stored as glycogen. Your liver can store about 90-100 grams of glycogen, so it converts the excess to fat (the triglycerides).
What matters: By maintaining a healthy weight, most people can keep their triglycerides at acceptable levels. If you’re overweight or gaining weight, however, they’ll accumulate and become a core predictor of heart disease and stroke. If you’re one of those overweight people, your first step is to lay off sugary and starchy foods, beer, and sweet drinks. Your body wasn’t built to handle all that sugar.
Consider this: You’d have to eat 4 apples in order to ingest roughly the same amount of fructose in one large McDonald’s Coke.
Oral Glucose Tolerance Test
Too much sugar stresses your system. Health care providers use the
oral glucose tolerance test (OGTT) to diagnose pre-diabetes and diabetes. For an OGTT, you consume 75 grams of glucose to see how your system processes sugar. It's a kind of stress test—downing that kind of sugar load is not something you should normally do.
A 24-ounce soda often contains more than 75 grams of sugar, most of it likely corn sugar. Roughly half of that 75 grams is fructose, so that soda shock may be worse than your health care provider's test is. The way people eat now-a-days, unintentional stress tests probably happen quite often.
What matters: Maybe you figure your body can process a big sugar load without damage. That’s like pointing to a man who smokes until he's 90 years old and dodges emphysema or cancer. Why gamble? Severe hyperglycemia (high blood sugar) can cause blurred vision, extreme thirst, and frequent urges to urinate. Hypoglycemia (low blood sugar) is easier to spot:
You feel weak with cold sweats and anxiety, blurred vision, or tiredness a couple of hours after a sugar binge. Sound familiar? Ask about an OGTT, which is more accurate than the simpler fasting glucose blood test.
Avoid Blood Sugar SpikesFewer blood sugar spikes help you live longer. If you live large—big meals, lots of beer, little moderation—you may be shortening your life even if your weight is okay. Repeated blood sugar spikes stress your organs that make up the metabolic engine of your body. That takes a toll. You might not even notice. People can live symptom-free for years in a pre-diabetic state even though they've lost as much as 50% of their pancreatic function. People with pre-diabetes share the same health risks, especially for heart disease, that haunt people with full-blown diabetes.
What matters:
Moderation. It’s simple, yet difficult. Think about what you put in your mouth. Sugar is diabolical. It tastes great and is less filling. Back off on the high-impact glycemics such as: beer, sugary soft drinks, and sport drinks, potatoes, pasta, baked goods, and pancakes. The less sugar stress you put on your system, the longer it will function properly. Stop blaming sugar for all your problems. Even if it is diabolical.
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