Your brain won't let you quit sugar! Here's why

Wan't to give up sugar? Here's why you cant.

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Written By: Pavitra Sampath | Published : September 10, 2015 5:43 PM IST

I make it sound like a drug, don't I? Well, sugar could very well be drug. Not only is it about as addictive as cocaine or heroin, when you give it up you do go through withdrawal. Wondering if I'm high on some other drug? No, here's why you can't quit sugar.

How your brain reacts to sugar?

All our brains have what is known as the reward pathway. Sugar acts in the same way as other drugs and makes you dependent on it.

It does so by affecting your brain's reward centre. Your reward centre has a very simple way of working. When you do something that you are to be rewarded for, like eating sugar, a bundle of neurons in your brain (called the vetral tegmental area) uses dopamine (a neurotransmitter) to tell a part of your brain called nucleus accumbens that you have eaten something good. You may also like to read about these 9 food items that can make or break your health.

The nucleus accumbens then triggers your prefrontal cortex (the front part of your brain that also helps with movement) that then activates certain hormones. These hormones tell your brain that the food you have eaten is great and that it should remember this food.

What sugar does to your brain

  • Sugar spikes the amount of dopamine released in your nucleus accumbens.
  • Over time it changes the gene expression in your brain and the amount of dopamine receptors in your brain (specifically your mid brain and frontal cortex).
  • It also decreases the action of the protein (known as the dopamine transporter) that pumps dopamine out of neural synapses and back into the neuron after its work is done

All of this makes your brain almost immune to sugar and therefore you will now need more sugar to activate the reward pathways. In short, it makes your brain so used to this dopamine release (which makes you happy, makes you feel satisfied and gives you energy) that it keeps craving more to achieve the same sugar rush it got the first time you ate it. Just like drugs. You may like to read 9 things excess sugar does to your body.

Why you can't quit sugar

Sugar has the same effect on you that drugs have. Sugar withdrawal is real. Studies suggest that sugar withdrawal is as tough as giving up a drug habit and often needs a lot of will power (thanks to how your brain tricks you into eating sugar). Eventually the need to eat sugar will decrease.

During withdrawal studies [7] have found people to be more impulsive, depressed, irritable and even lacking in energy. You may also like to read 9 ways to beat sugar cravings.

Want to quit sugar? Here are 9 foods you can substitute it with.

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References:

[1] Avena NM, Rada P, Hoebel BG. Evidence for sugar addiction: behavioral and neurochemical effects of intermittent, excessive sugar intake. Neurosci Biobehav Rev. 2008;32(1):20-39. Epub 2007 May 18. Review. PubMed PMID: 17617461; PubMed. Central PMCID: PMC2235907.

[2] Avena NM, Rada P, Moise N, Hoebel BG. Sucrose sham feeding on a binge schedule releases accumbens dopamine repeatedly and eliminates the acetylcholine satiety response. Neuroscience. 2006;139(3):813-20. Epub 2006 Feb 7. PubMed PMID: 16460879.

[3] Spangler R, Wittkowski KM, Goddard NL, Avena NM, Hoebel BG, Leibowitz SF. Opiate-like effects of sugar on gene expression in reward areas of the rat brain. Brain Res Mol Brain Res. 2004 May 19;124(2):134-42. PubMed PMID: 15135221.

[4] Hajnal A, Norgren R. Repeated access to sucrose augments dopamine turnover in the nucleus accumbens. Neuroreport. 2002 Dec 3;13(17):2213-6. PubMed PMID: 12488799.

[5] Gosnell BA. Sucrose intake enhances behavioral sensitization produced by cocaine. Brain Res. 2005 Jan 21;1031(2):194-201. PubMed PMID: 15649444.

[6] Colantuoni C, Rada P, McCarthy J, Patten C, Avena NM, Chadeayne A, Hoebel BG. Evidence that intermittent, excessive sugar intake causes endogenous opioid dependence. Obes Res. 2002 Jun;10(6):478-88. PubMed PMID: 12055324.

[7] Mangabeira V, Garcia-Mijares M, Silva MT. Sugar withdrawal and differential reinforcement of low rate (DRL) performance in rats. Physiol Behav. 2015 Feb;139:468-73. doi: 10.1016/j.physbeh.2014.09.017. Epub 2014 Dec 5. PubMed PMID: 25484352.

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