What happens to the body if you don't eat sugar for 3 weeks? Your skin will improve and you'll be full of energy

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Tomáš , 28. 12. 2025

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Sugar itself is not inherently bad, but the problem arises from the fact that many foods today contain sugar and you therefore introduce much more sugar into your body than the body actually needs.

Sugar

It can be stated that if you radically reduce the amount of sweets (and replace them, for example, with fruit) and stop sweetening your coffee or tea, you will certainly be much healthier.
Here are five things that happen in your body afterwards when you stop eating sugar.

More energy

It sounds strange that many of us reach for a sweetened coffee or, even worse, a sugary energy drink when very tired or drowsy. The explanation is very simple: sugar does indeed give a quick boost, but unfortunately only for a very short time. Generally speaking, sugar does everything to make you feel chronically tired. It blocks your body’s ability to store energy reserves. Once it’s digested — which takes only an hour — you’ll start feeling tired again. And you have to eat or drink something sweet again. A vicious circle arises. Therefore reduce your sugar intake.

Weight stabilization

Sugar in food makes us eat even more sugar. It causes a real chemical addiction! Let’s be honest: the vast majority of manufactured foods contain tons of salt and sugar. Along with them your body gets excess calories. Moreover, sugar triggers a feeling of hunger and makes us overeat. That’s why when you eat a chocolate bar, an hour later you’ll already feel like you could eat, say, an elephant.

Digestive tract function

If your internal organs could speak to you, they would surely ask you to eat far fewer sweet products. Have you noticed that those who like sweets go to the toilet much more often than others? That’s no coincidence: the digestive system processes sugar faster than anything else. Once there is too much sugar, our digestion simply can’t process anything else until it reaches the large intestine.

Craving for sweets

It’s a fact: sugar makes you want sugar. When you eliminate it from your diet, your habit of always and everywhere ordering dessert will eventually disappear. You’ll prefer fruit. Cakes and pastries will seem too sweet to you.

Healthier skin

Can’t understand what’s happening to your skin when you constantly apply various creams and ointments? It’s quite possible that an excess of sugar is damaging it from the inside. When there is a chronic excess of glucose in the human body, the skin is dry and easily develops sores and rashes. This is a natural reaction of the organism.

Conclusion

According to the recommendations of the World Health Organization, we should not obtain more than 5% of our total required energy from sweets during the day. But how to achieve this without it feeling burdensome? Start with small things. Pay attention to what you eat and drink. How much sugar is in it? Maybe you should quit iced teas and cola.
Of course it’s not easy. But realize one thing: sugar addiction disappears within three weeks. If you can survive these three weeks, then after this liberating period your urge to eat sweets will be significantly weakened. And it will soon disappear. You simply won’t be able to eat anything too sweet anymore. You won’t want to. It’s worth some initial effort.