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Fascinating simulation shows exactly what your body goes through after cutting out sugar for two weeks

Home> Science> News

Published 14:39 8 Aug 2025 GMT+1

Fascinating simulation shows exactly what your body goes through after cutting out sugar for two weeks

Trust us, your dentist will thank you

Tom Chapman

Tom Chapman

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For those of us who suffer from a sweet tooth, you might want to take a second look at the effects sugar is having on your body.

Even though we all know that too much of a good thing can be bad for you, there's no real reason we should be ingesting sugar that's not from natural sources.

Still, those addictive sweet treats are something the human race just can't get enough of.

There are plenty of diets out there, and while the likes of the carnivore diet and the Keto diet remain popular, it's often hard for people to stick to them.

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A lot of us could do with cutting back on the sweet stuff (SimpleImages / Getty)
A lot of us could do with cutting back on the sweet stuff (SimpleImages / Getty)

Many go mad for Diet Coke, and while it doesn't contain sugar in a traditional sense, it can be just as addictive to many – including the President of the United States.

Those like Bryan Johnson, trying to live forever, will tell you about the downsides of sugar, but still, do you really think that will stop most of us from reaching for a packet of biscuits after dinner?

Now, a simulation from GrowFitHealth reveals what happens to your body after just two weeks of cutting out the sweet stuff. Even though this isn't a certified medical outlet, it gives us a fascinating insight into what supposedly happens when you axe sugar from your diet.

On days one and two, your blood sugar apparently starts to stabilize, with you feeling fewer energy crashes or sudden spikes as your body taps into your stored fats for energy. This should be handy for those who are trying to shift an extra tire around their middle.

It's not all good news, as on days three to six, you'll typically experience headaches, mood swings, and fatigue. While all part of the process, it's a result of your body detoxifying and adjusting before these symptoms will eventually pass.

Days seven to nine involve your tastebuds getting a reset and your palate becoming more capable of tasting subtle flavors. An unusual side effect of this is that fruits will apparently taste sweeter than usual. It's here that your body will get its sugar fix without reaching for a bag of Haribo.

Healthline explains how you might suffer from a low mood because of a reduced dopamine release, potential bouts of anxiety, difficulty concentrating, an erratic sleep pattern, and a craving for carbohydrates, as well as sugary foods.

This takes us into the final stretch of days 10 to 14, where your energy is supposed to 'shoot up' and you'll no longer feel sugar crashes. The new you will enjoy "steady, clean, fuel as your body becomes more efficient at burning fats for your fuel."

It doesn't take an expert to explain how sugar isn't good for you, but in the comments, others were keen to share their thoughts.

One person wrote: "Yeah I tried it before, the next time I tried something sugary after a year or so, I couldn't stand the taste, somehow felt extremely sweet and unpleasant."

Another added: "I had a sugar addiction due to toxins in my house it was a very hard habit to break, when I moved out I cut sugar cold turkey and lost 40 pounds. I have never felt better and my aging as slowed down significantly."

A third warned: "I think a lot of people are confusing cutting sugar out vs cutting out glucose. glucose, you NEED. that’s your body’s source of energy, you get this from carbs protein or fat. glucose is a type of sugar, which is a term used for a group of simple carbs. it’s glucose that’s keeps your bp and main energy source."

Sugar is an important part of a balanced diet, but maybe next time you find yourself feeling a little snackish in the night, that bar of chocolate in the fridge probably isn't what you should be reaching for.

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