Don’t be alarmed—but something’s hiding in your food. From the cereal you had for breakfast to the dressing on your salad to the ketchup on your fries, an addictive substance is lurking in many foods that you’d never suspect.
Far more loathed than fat or cholesterol these days, sugar has become public enemy No. 1 when it comes to the health of America. In fact, in our effort to listen to doctors’ orders (and government guidelines) to consume less fat and less cholesterol, Americans turned to “healthy” low-fat foods that were actually loaded with sugar.
In its recent report, the Dietary Guidelines Advisory Committee cited sugar as one of our biggest health concerns and recommended that sugar make up 10 percent or fewer of our daily calorie intake. The American Heart Association recommends that no more than half of your daily discretionary calories comes from added sugars (about 6 teaspoons or 100 calories for women, and 9 teaspoons or 150 calories for men). But we’re eating way more of the sweet stuff than that: The CDC reports that the average American eats between 13 and 20 teaspoons of added sugar a day (around 230 calories for women, and 335 for men).
In its natural state, sugar is a relatively harmless—even necessary—carbohydrate that our bodies need to function. It’s found in fruits, vegetables, and dairy as a compound known as fructose or lactose. The problem comes when sugar is added to foods during processing for added flavor, texture, or color. This is more common than you may realize—you don’t have to be in the candy aisle to be surrounded by added sugar.
Eating too many of these empty calories has many health effects, the most obvious being major weight gain. Added sugar drives your insulin levels up, messes with your metabolism, and causes those calories to turn right into belly fat. And while losing weight is well and good, that’s just the beginning of the health benefits of cutting back on the sweet stuff. Below are 10 more legit reasons—besides fitting into skinny jeans—to tame that sweet tooth for good.
- It can lower your blood pressure…
Obesity, one of the main consequences of excessive added sugar intake, is a major risk factor for high blood pressure. New research shows that added dietary sugars—independent from weight gain—can also raise blood pressure. And this is no small thing: High blood pressure increases the workload of the heart and arteries and can cause damage over time to the whole circulatory system. Eventually, this can lead to heart disease, heart attacks, stroke, kidney damage, artery disease, and other serious coronary conditions.
What’s more: People who have diets where at least 25 percent of the calories came from added sugar are twice as likely to die from cardiovascular disease than those who have diets where added sugars make up less than 10 percent of the food they eat .
- …As well as your bad cholesterol.
People who consume a lot of added sugar are more likely to have lower levels of HDL, or good cholesterol, higher levels of LDL, or bad cholesterol, and higher levels of triglycerides, or blood fats. Bad cholesterol and blood fats clog up arteries and blood vessels, leading to heart disease.
- It decreases your heart attack risk.
People with higher added sugar intakes had a notable increase in risk of heart attacks compared to those with lower intakes, one recent study found . One simple swap to cut your risk: Ditch the soda. One study found that sugar-sweetened beverages are associated with increased risk of coronary heart disease. “For every extra soda or sugary drink you consume, you may raise your risk of heart disease by up to 25 percent,” says Darria Long Gillespie, M.D., a board-certified emergency physician at Emory University Hospital.
- It keeps your brain sharp.
You may have been warned that sweets can eat away at teeth enamel, but what’s even scarier is that sugar can eat away at your brain power too. Research shows that eating too much sugar can impair cognitive function and reduce proteins that are necessary for memory and responsiveness. In one particular study, rats who were fed sugar were slower and showed less synaptic activity in their brains than those in the control group. “A high intake of sugar is associated with metabolic syndrome, a cluster a conditions associated not just with decreased cognitive function, but possibly even with changes to brain structure,” Long Gillespie says.
- You’ll be less likely to have Alzheimer’s and dementia…
A diet high in added sugar reduces the production of a chemical known as brain-derived neurotrophic factor (BDNF), which helps the brain form new memories and remember the past. Levels of BDNF are particularly low in people with an impaired glucose metabolism (diabetics and pre-diabetics) and low BDNF has been linked to dementia and Alzheimer’s disease.
- …And depression.
In order to function properly, the brain depends on a steady supply of chemicals like glucose and insulin. When glucose (another name for sugar) enters the body, insulin opens cell doors to allow it into the cells. However, when your brain experiences continuous sugar spikes (from your breakfast of Lucky Charms to your post-dinner ice cream sandwich), insulin becomes more immune to its effects and therefore less effective. This in turn leads to depression and anxiety.
- It will lower your risk of diabetes.
Research shows that drinking one to two (or more) sugary drinks per day increases the chance of developing Type 2 diabetes by 26 percent. Because of the high insulin resistance caused by excess sugar intake, fructose, glucose, and other forms of sugar can’t get into the cells and become “stuck” in the bloodstream. This high blood sugar leads to pre-diabetes and eventually the threat of actual diabetes.
- It can help prevent fatty liver disease.
Research suggests a diet high in added sugar can exacerbate fatty liver disease. Never heard of fatty liver disease? You’re not alone, but it’s actually one of the most common diseases in America, says Mark Hyman, M.D., founder of the Ultra Wellness Center and chairman of the Institute for Functional Medicine. Basically, that spike in insulin caused by sugar also drives fat into the liver cells, causing inflammation and scarring. This disease is a major risk factor for diabetes, heart attacks, and even cancer.
- It can help reduce your risk of certain cancers.
Though studies are not completely conclusive, some research suggests that excessive added dietary sugar is correlated with higher levels of certain cancers, such as pancreatic cancer.
- You’ll breathe easier.
Studies suggest that certain dietary patterns, including a high-sugar diet, can make you more likely to suffer from asthma or chronic obstructive pulmonary disease (COPD), which is the third leading cause of death in the U.S.