 You’ve probably heard this a million times before… but it’s worth repeating.
Added sugars (like sucrose and high
fructose corn syrup) contain a whole bunch of calories with NO essential
nutrients.For this reason, they are called “empty” calories.There are
no proteins, essential fats, vitamins or minerals in sugar… just pure
energy.It is worthy to note that when people eat up to 10-20% of
calories as sugar (or more), this can become a major
problem and contribute to nutrient deficiencies.Sugar is also very bad
for the teeth, because it provides easily digestible energy for the bad
bacteria in the mouth. Bottom Line: Sugar contains a lot of
calories, with no essential nutrients. It also causes tooth decay by
feeding the harmful bacteria in the mouth. |
2. Added Sugar is High in Fructose, Which Can Overload Your Liver
In order to understand what is so bad about sugar, and then you need to understand what it is made of.
Before sugar enters the bloodstream from the digestive tract, it is broken down into two simple sugars… glucose and fructose.
- Glucose is found in every living cell on the planet. If we don’t get it from the diet, our bodies produce it.
- Fructose is different. Our bodies do not produce it in any significant amount and there is no physiological need for it. The thing with fructose is that it can only be metabolized by the liver in any significant amounts.
This is not a problem if we eat a little bit (such as from fruit) or we
just finished an exercise session. In this case, the fructose will be
turned into glycogen and stored in the liver until we need it.
However, if the liver is full of glycogen (much more common), eating a
lot of fructose overloads the liver, forcing it to turn the fructose
into fat . When repeatedly eating large amounts of sugar, this process
can lead to fatty liver and all sorts of serious problems.
Keep in mind that all of this does NOT apply to fruit. It is almost impossible to overeat fructose by eating fruit.
There is also massive individual variability here. People who are
healthy and active can tolerate more sugar than people who are inactive
and eat a Western, high-carb, high-calorie diet.
Bottom Line: For people who are inactive and eat a
Western diet, large amounts of fructose from added sugars get turned
into fat in the liver.
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3. Overloading the Liver with Fructose Can Cause Non-Alcoholic Fatty Liver Disease
When fructose gets turned into fat in the liver, it is shipped out as VLDL cholesterol particles.
However, not all of the fat gets out, some of it can lodge in the liver.
This can lead to Non-Alcoholic Fatty Liver Disease (NAFLD), a growing
problem in Western countries that is strongly associated with metabolic
diseases.
Studies show that individuals with fatty liver consume up to 2-3 times as much fructose as the average person.
Bottom Line: Excess fructose gets turned into fat, which can lodge in the liver and cause non-alcoholic fatty liver disease. |
4. Sugar Can Cause Insulin Resistance, a Stepping Stone towards Metabolic Syndrome and Diabetes
Insulin is a very important hormone in the body.
It allows glucose (blood sugar) to enter cells from the bloodstream and
tells the cells to start burning glucose instead of fat. Having too much
glucose in the blood is highly toxic and one of the reasons for
complications of diabetes, like blindness.
One feature of the metabolic dysfunction that is caused by the Western
diet, is that insulin stops working as it should. The cells become
“resistant” to it.
This is also known as insulin resistance, which is believed to be a
leading driver of many diseases… including metabolic syndrome, obesity,
cardiovascular disease and especially type II diabetes.
Many studies show that sugar consumption is associated with insulin resistance, especially when it is consumed in large amounts.
Bottom Line: When people eat a lot of sugar, it can cause resistance to the hormone insulin, which can contribute to many diseases. |
5. The Insulin Resistance Can Progress to Type II Diabetes
When our cells become resistant to the effects of insulin, the beta cells in our pancreas make more of it.
This is crucial, because chronically elevated blood sugars can cause severe harm.
Eventually, as insulin resistance becomes progressively worse, the
pancreas can’t keep up with the demand of producing enough insulin to
keep blood sugar levels down.
At this point, blood sugar levels skyrocket and a diagnosis of
type II diabetes is made.Given that sugar can cause insulin
resistance, it is not surprising to see that people who drink
sugar-sweetened beverages have up to an 83% higher risk of Type II
diabetes.Bottom Line: Because of the harmful effects of sugar on the function of insulin, it is a leading driver of type II diabetes |
6. Sugar Can Give You Cancer
Cancer is one of the leading causes of death worldwide and is
characterized by uncontrolled growth and multiplication of cells.
Insulin is one of the key hormones in regulating this sort of growth.
For this reason, many scientists believe that having constantly elevated
insulin levels (a consequence of sugar consumption) can contribute to
cancer.
In addition, the metabolic problems associated with sugar consumption
are a known driver of inflammation, another potential cause of cancer.
Multiple studies show that people who eat a lot of sugar are at a much
higher risk of getting cancer.
Bottom Line: There is considerable evidence that sugar, due to its harmful effects on metabolism, can contribute to cancer. |
7. Due to its Effects on Hormones and the Brain, Sugar has Unique Fat-Promoting Effects
Not all calories are created equal.
Different foods can have different effects on our brains and the hormones that control food intake.
Studies show that fructose doesn’t have the same kind of effect on satiety as glucose.
In one study, people drank either a fructose-sweetened drink or a glucose-sweetened drink.
Afterwards, the fructose drinkers had much less activity in the satiety centers of the brain and felt hungrier.
There is also a study where fructose didn’t lower the hunger hormone ghrelin nearly as much as glucose did.
Over time, because the calories from sugar aren’t as fulfilling, this can translate into an increased calorie intake.
Bottom Line: Fructose doesn’t cause satiety in the brain or lower the hunger hormone ghrelin nearly as much as glucose. |
8. Because it Causes Massive Dopamine Release in The Brain, Sugar is Highly Addictive
Sugar can be addictive for a lot of people. Like abusive drugs, sugar
causes a release of dopamine in the reward center of the brain. The
problem with sugar and many junk foods is that they can cause massive
dopamine release… much more than we were ever exposed to from foods
found in nature.
For this reason, people who have a susceptibility to addiction can become strongly addicted to sugar and other junk foods.
The “everything in moderation” message may be a bad idea for people
who are addicted to junk food… because the only thing that works for
true addiction is abstinence. Bottom Line: Because sugar causes a large release of dopamine in the brain, it can cause addiction in a lot of people. |
9. Sugar is a Leading Contributor to Obesity in Both Children and Adults
The way sugar affects hormones and the brain is a recipe for fat gain disaster.
It leads to decreased satiety… and can get people addicted so that they
lose control over their consumption. Not surprisingly, people who
consume the most sugar are by far the most likely to become overweight
or obese. This applies to all age groups.
Many studies have examined the link between sugar consumption and
obesity and found a strong statistical association. The link is
especially strong in children, where each daily serving of
sugar-sweetened beverages is associated with a whopping 60% increased risk of obesity. One of the most important things you can do if you need to lose weight is to significantly cut back on sugar consumption.
Bottom Line: Because of the effects of sugar on
hormones and the brain, sugar dramatically increases the risk of
becoming overweight or obese. |
10. It Ain’t The Fat… It’s SUGAR That Raises Your Cholesterol and Gives You Heart Disease
For many decades, people have blamed saturated fat for heart disease…
which is the #1 killer in the world. However… new studies are showing
that saturated fat is harmless. The evidence is mounting that sugar, NOT
fat, may be one of the leading drivers of heart disease via the harmful
effects of fructose on metabolism.
Studies show that large amounts of fructose can raise triglycerides,
small, dense LDL and oxidized LDL (very, very bad), raise blood glucose
and insulin levels and increase abdominal obesity… in as little as 10 weeks. These are all major risk factors for heart disease.
Not surprisingly, many observational studies find a strong
statistical association between sugar consumption and the risk of heart
disease. |
Take Home Message
For people who can’t tolerate it, added sugar is incredibly harmful. Empty calories are just the tip of the iceberg. |
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