Being addictive, sugar can lead to cravings and be a major contributor to anxiety disorders and mood disorders like depression. Learn what you can do.
We come into this world hardwired to like things that taste sweet.
To a baby, sweetness means mother’s milk.
Preferring sweets is a survival mechanism our ancestors developed to protect them from toxic foods.
If you’re feeling stressed out, anxious or depressed, you may crave sweets and find that they make you feel better.
But in the long run, eating sugar stimulates further cravings and contributes to anxiety, depression, and other mental disorders.
Let’s take a look at the complicated relationship between sugar and your mental health.
Along the way, you’ll find out how sugar actually affects your brain and how this keeps you coming back for more.
Glucose — The Brain’s Main Energy Source
To understand how sugar (sucrose) impacts you, we need to take a look at its two components, glucose and fructose.
While glucose and fructose are structurally very similar, they behave differently in the body.
Glucose is a simple sugar molecule that’s a building block of mainly plant-based complex carbohydrates such as those found in whole grains, legumes, fruits and vegetables.
It is essential to life.
It circulates in your blood and provides energy to all of your cells especially your brain cells which use a disproportionate amount of energy compared to other cells. (1)
And since brain cells can’t store energy, they need a steady supply of glucose.
While your liver can break down stored fat to produce ketones to feed the brain in a pinch, most people’s brains run on glucose most of the time.
Why Added Fructose Is a Problem
Fructose is another simple sugar naturally found in fruit and sweet vegetables like carrots, beets and yams. (2)
Virtually every cell in the body can metabolize glucose for energy, but only liver cells can handle fructose. (3)
Refined sugars like white sugar, high fructose corn syrup, and even “healthier” sweeteners like honey and maple syrup are roughly half glucose and half fructose.
A diet high in added fructose raises blood fructose levels — and this is a health disaster.
It increases the risk of obesity and diabetes. (6)
And it contributes to chronic inflammation, an underlying cause of many health conditions of both the body and the brain.
Sugar and Depression
The evidence is clear.
You may turn to sugar when you’re feeling blue.
It may make you feel better temporarily, but, in fact, sugar fuels your depression.
Here are the main ways sugar contributes to depression.
Sugar Increases Serotonin
Most antidepressant medications work by increasing brain levels of the “happiness” neurotransmitter serotonin.
When you’re feeling down and indulge in foods with a high sugar content, you are actually self-medicating.
Eating refined sugars, white flour, and other processed carbohydrates gives you the fastest serotonin boost. (9)
But this lift is short-lived, lasting only an hour or two before you crash.
A smarter long-term strategy for increasing serotonin is to eat healthy carbohydrates.
Oddly, when carbs and protein are eaten together, the presence of protein blocks serotonin synthesis. (10)
But you can eat carbs on their own without protein to increase serotonin naturally.
Learn exactly how to strategically eat carbs to curb depression in our article on increasing serotonin with food.
Sugar Increases Brain Inflammation
The medical consensus is that depression is caused by a lack of two feel-good brain chemicals, mainly serotonin and sometimes dopamine.
Millions of people are prescribed antidepressants based on this model of depression.
However, another promising theory is emerging — the “cytokine model of depression.” (11)
Related articles on Be Brain Fit —
Brain Inflammation May Be the Cause of Your Depression
This foundation of this theory is that brain inflammation is the root cause of depression.
Cytokines are immune system messengers that regulate inflammation.
Currently, the most popular antidepressants are selective serotonin reuptake inhibitors (SSRIs) which are thought to work by increasing serotonin levels.
But now there’s evidence that SSRIs are anti-inflammatory.
So it’s quite possible that being anti-inflammatory, not serotonin-boosting, is the property responsible for their antidepressant effect. (15)
Sugar Suppresses a Natural Antidepressant
Brain-derived neurotrophic factor (BDNF) is a protein critical for brain health.
BDNF stimulates the formation of new brain cells and protects the brain from neurodegenerative diseases. (16)
Sugar and Anxiety
Just as you may eat sugar to lighten your mood, you may also eat it to relax when you are feeling stressed or anxious.
Stress also affects food preferences, making you crave sugar, fat or both.
That’s why no one craves a big bowl of broccoli when they’re stressed out!
The Hypoglycemia-Anxiety Connection
Hypoglycemia occurs when your blood sugar level drops too low.
Common symptoms of both include mood swings, brain fog, nervousness, restlessness, irritability, inability to concentrate, and crying spells.
A low blood sugar attack can leave you feeling jittery, sweating, heart pounding, and confused — very much like an anxiety attack.
This occurs when the symptoms of low blood sugar are present even though your actual blood sugar level is in the normal range.
The Blood Sugar Roller Coaster
Foods with a high glycemic index like sugar, high fructose corn syrup, or wheat cause blood sugar levels to spike.
Your body responds by making insulin which causes your blood sugar level to drop.
When your brain doesn’t get the fuel it needs, your adrenal glands kick in to release epinephrine and cortisol.
This causes stored sugar to be released to bring your blood sugar level back to normal. (28)
If you suspect your anxiety is related to hypoglycemia, it’s critical that you limit your intake of all refined carbohydrates and eat protein, healthy fats, and complex carbohydrates instead.
And consider taking a magnesium supplement.
Why You Crave Sugar and What You Can Do About It
Knowing that sugar contributes to anxiety and depression won’t stop you from craving sugar.
In a weird way, your brain doesn’t “care” where the glucose comes from — healthy or unhealthy sources — as long as it gets enough.
Forgive me for stating the obvious, but the main cause of sugar cravings is sugar!
Related articles on Be Brain Fit —
The Importance of Vitamins for Depression
White sugar is so highly refined that its effects on the brain are more drug-like than food-like. (31)
Sugar meets all of the criteria of an additive substance.
The lure of sugar is so strong that it’s been compared to hardcore drugs.
Let’s take a look at how sugar hijacks your brain to make you want more.
Sugar, Dopamine, and the Pleasure-Reward System
Throughout most of human history, finding enough food was a struggle and sweet foods were scarce.
So when our ancestors found a patch of wild berries or an empty beehive, it was a rare sweet treat!
And this fortunate find gave them a nice boost of the neurotransmitter dopamine.
It gives you that “I want more!” and “Let’s do this again!” feeling when you experience something enjoyable.
Sugar Cravings from Food Reactions
You may also experience sugar cravings if you eat foods to which you are allergic or sensitive.
You don’t have to be truly allergic for a food to make you crave sugar.
You may simply be intolerant to a certain food.
Reasons for food intolerances include lactose intolerance, gastroesophageal reflux (GERD), and enzyme deficiencies. (35)
Sugar Cravings from Artificial Sweeteners
By changing your intestinal microbiome they also cause your blood sugar level to vary more than normal. (39)
When Sugar Cravings Are a Cry for Nutrients
Sugar cravings can be a signal that your body is starving for nutrients.
Hormonal-Based Sugar Cravings
PMS, menopause and pregnancy all have women craving sweets.
A whopping 97% of all women report sugar cravings compared to 68% of men. (41)
Men, on the other hand, more often crave meat, and turn to alcohol and cigarettes when stressed, anxious or depressed.
Sugar Meets the Criteria of an Addictive Substance
Sugar addiction is not yet recognized as a psychological disorder by the American Psychiatric Association or the World Health Organization.
But the latest research supports that sugar addiction is real. (42)
Sugar exhibits all the hallmarks of an addictive substance:
- You can’t eat sugar in moderation.
- You often have more than you planned.
- You consume mindlessly, not really enjoying it.
- You eat it to the point of feeling unwell.
- You think about sugar even when you are full.
- You feel guilty after eating but immediately want more anyway.
- You feel out of control.
- You lie about or hide your habit from others.
Do any of these sugar addiction symptoms sound familiar?
Some research indicates that sugar may be as addictive as heroin and cocaine! (43)
The average American eats their weight in sugar every year. (44)
If you are among them, you may well have a sugar addiction.
Processed Food Is Intentionally Addictive
And if all that isn’t enough, there is an insidious scheme to get you hooked on sugar.
Investigative journalist Michael Moss revealed in his book Salt Sugar Fat: How the Food Giants Hooked Us that food manufacturers employ teams of scientists to find the perfect balance of sugar, fat, and salt called the “bliss point” to make their products intentionally addictive. (45)
These processed foods trigger a flood of dopamine.
This explains why you may find yourself staring at the bottom of an empty cookie jar when you vowed you’d have only one or two.
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To begin, I apologize for the dark nature of today's email.
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Is Bread Really the Staff of Life… or the Stuff of Disease?
For most us, there are few foods more comforting than bread.
Fluffy biscuits, crusty baguettes, flaky croissants… even a simple slice of toast topped with melted butter can taste like heaven.
And that smell… few scents are quite as pleasant as fresh bread baking in the oven.
But there is a lot of confusion as to where bread fits into a healthy diet.
The Bible practically commands followers to eat it: “Give us this day our daily bread…” The government put it at the base of the food pyramid. And for centuries, it has been called “the staff of life.”
Of course, there are some who disagree…
Well-known cardiologist, Dr. William Davis, calls wheat “the perfect chronic poison.”
And for a poison, we sure eat lots of it…
The average American consumes 55 pounds of wheat flour every year, making refined flour the #1 source of calories in the American Diet – a situation that nutrition expert Chris Kresser describes as, “a public health catastrophe.”
So, what is the truth about bread and wheat?
- Is it the perfect poison… or an essential daily food?
- Is “gluten-free” bread better for you than regular bread?
- And can you still eat bread… while maintaining a lean body and optimal health?
The answers to these questions may surprise you!
Be sure to read #5 – the biggest surprise of all!
Recently, Doctor of Naturopathy, weight-loss expert and best-selling Amazon author Liz Swann Miller, creator of the Red Smoothie Detox Factor, revealed 2 of the secrets to easy, steady weight loss. Secrets the big food corporations do their best to hide from us.
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You probably know most of us eat too much processed food. What you may not know is that it’s full of toxic chemicals and substandard, dirt-cheap ingredients designed to make you eat more…and force you to gain weight.
Here’s how it works.
“That stuff is just a lot of calories your body can’t use,” Liz told me, “Some are poison. And all these foods are stripped of the anti-oxidants and anti-inflammatories that help your body detox. The result? Your body expends huge amounts of calories to eliminate some toxins—the rest, it stores in your fat to protect you. This is why most people are hungry all the time. They’re not getting energy they need.”
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Sponsored Health Resources
In the years that I've been working on this website project I've come across some amazing resources by some very special people. I'd like to share them with you here.
NOTE: I update these links often so please check back to see what's new!
1) Everyone knows green smoothies are healthy right? Have you heard of a “red” smoothie? If not, check out this story…
2) Forget what you've read about 10-day lemonade cleanses, 7-day detoxes with green juices and Gwyneth's gruel. All you need to do, and this is perfect for Saturday or or anytime really, is a simple 1-day cleanse.
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5) Turmeric is amazing. The problem is - It's hard to absorb!
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Enjoy! Let me know how these work out for you. And if you run across anything I've missed please let me know.