Sugar Cravings? Turns Out Your DNA Might Be The Culprit For Your Sweet Tooth

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Ever wonder why you can't resist that candy bar you set your eyes on at a shop or the dessert served to you at dinner? It turns out, your sweet tooth might not be entirely your fault. Turns out, the craving for sugar may not just be about willpower or taste, it could be influenced by the very genes that make you

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The Link Between DNA And Sweet Tooth

If you're someone who constantly craves sweets, your DNA might actually be the reason. An international team of researchers suggests that a genetic variation could be behind our love for sugary treats, possibly influencing how much we enjoy and consume them. The focus is on the sucrase-isomaltase (SI) gene, which plays a big part in how our bodies process sugars.

This gene helps break down sucrose better known as table sugar and maltose, a less sweet sugar found in certain cereals, into simpler sugars that the small intestine can absorb. This genetic factor might explain why some people reach for dessert more often, while others can easily pass.

When Sugar Is Hard To Digest

For some people, digesting sugars like sucrose and maltose isn't as straightforward as it should be, and this may be due to mutations in the sucrase-isomaltase (SI) gene. These mutations are more common in individuals with irritable bowel syndrome (IBS) than in those without, possibly linking the gene to digestive discomfort.

About 10% to 15% of adults in the U.S. live with IBS, experiencing frustrating symptoms like cramping, bloating, and a feeling of fullness or burning in the stomach. These uncomfortable sensations are often paired with unpredictable bouts of diarrhoea or constipation, making it challenging to maintain a regular routine.

Missing A Gene, Losing A Sweet Tooth

In the study, the researchers looked into how the absence of the sucrase-isomaltase (SI) gene affects dietary habits by starting with mice that lacked this gene. The result? The mice quickly lost interest in consuming sugary foods, cutting down on their sucrose intake.

To see if the same effect applied to people, the team expanded their study to 6,000 people in Greenland and nearly 135,000 in the UK. They discovered that those in Greenland who couldn't digest sucrose at all ate far fewer sugary foods.

Meanwhile, in the UK, people with only partially functional SI genes also showed less preference for sweets.

Research Reveals

The study's findings were published in Gastroenterology where Peter Aldiss, the study leader from the University of Nottingham, explained that the research reveals how genetic differences in our ability to digest sucrose could influence not just our preference for sugary foods, but also how much we consume.

This could pave the way for targeting the SI gene to help reduce sucrose intake on a larger scale, potentially benefiting public health worldwide. Aldiss is hopeful that their work could play a role in curbing excessive sugar consumption globally.

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Consuming too much sugar can harm your cells, leading to chronic inflammation, which is linked to serious health problems like obesity, heart disease, diabetes, liver disease, and even cancer.
The American Heart Association advises that men should limit added sugar to no more than 9 teaspoons (36 grams) a day, and women should stick to 6 teaspoons (25 grams).

Yet, a recent poll found that Americans are averaging 99 grams of sugar daily, which adds up to about 80 pounds a year. Clearly, cutting back on sugar is something we could all benefit from.

Disclaimer: The information provided in this article is for general informational and educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or a qualified healthcare provider with any questions you may have regarding a medical condition.