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You Are What You Eat: How Your Gut Microbiome Drives Your Cravings

Find yourself craving sweets after dinner every night? Or perhaps it’s that midnight yearning for fried fast food. Whatever’s got you hooked, you might be surprised to learn it’s actually your gut microbes calling the shots. Here’s how and what you can do about it.

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Our gut is home to a complex ecosystem of bacteria, viruses, fungi, and other microorganisms collectively known as the gut microbiome. This microbiome plays a vital role in our overall health, influencing digestion, immunity and even our mood. But recent studies show how our gut microbes influence on our dietary choices, especially when it comes to sugar. What causes sugar cravings in the first place? It turns out that our gut microbes have a say in this matter. Certain strains of bacteria in the gut are capable of fermenting sugars and producing short-chain fatty acids (SCFAs). These SCFAs can communicate with our brain, influencing our food preferences and cravings. The gut and the brain are in constant communication through what's known as the gut-brain axis, and when our gut microbes ferment sugars and produce SCFAs, they send signals to the brain, affecting our mood, appetite, and - you guessed it - cravings.

An imbalanced gut microbiome can lead to an overproduction of SCFAs, which may intensify sugar cravings. Diet plays a significant role in shaping the composition of our gut microbiome. Excessive sugar consumption can lead to an overgrowth of sugar-loving bacteria, creating a vicious cycle of cravings. Additionally, highly processed and sugary foods can disrupt the balance of beneficial bacteria in the gut, further exacerbating the problem. 

Here's how it all works:

Microbial Metabolism: The gut microbiome metabolises dietary components, producing various compounds that can influence our cravings. Some bacteria thrive on specific types of nutrients, and their metabolism can lead to the production of signalling molecules that affect our appetite and food preferences.

Neurotransmitter Production: Gut microbes can influence the production of neurotransmitters, such as serotonin and dopamine, which play key roles in mood regulation and reward pathways. Certain bacteria can produce substances that impact the levels of these neurotransmitters, influencing our mood and, consequently, our food choices.

Short-Chain Fatty Acids (SCFAs): The gut microbiome produces SCFAs through the fermentation of dietary fibres. SCFAs can act as signalling molecules that communicate with the brain, affecting appetite regulation and food preferences.

Inflammation and Cravings: Imbalances in the gut microbiome can contribute to low-grade inflammation, which has been linked to cravings for high-sugar and high-fat foods. Certain harmful bacteria may promote inflammation, leading to an increased desire for foods that provide quick energy, such as sweets.

Gut-Brain Axis: The gut and the brain are connected through the gut-brain axis, a bidirectional communication system. Signals from the gut, including those influenced by the microbiome, can impact brain function and influence behaviours related to food intake.

Understanding the intricate relationship between the gut microbiome and cravings provides valuable insights into how our dietary choices are influenced by the microorganisms residing in our digestive system. Maintaining a diverse and balanced gut microbiome through a healthy diet rich in fibre and fermented foods is crucial for promoting overall well-being and making mindful food choices.

What you put on your plate plays a major role in your wellbeing, and we’ve put in the hard yards so you can enjoy the benefits of an extensive, wholistic program that covers everything from learning how to manage nutrition and mental health to social situations. Plus, our specially-designed app has streamlined features, 2500 recipes, 1:1 coaching and exclusive exercise courses to help you combat the cravings. When you join us for the 8-Week Program you’ll have exclusive access to expert guidance, nutritional planning and support every step of the way. Take a peek at what’s on offer:

  • 8 weeks of meal plans and shopping lists.
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  • 1:1 dedicated coaching.

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