By Azra Alagic They say a long and healthy life starts from within, and science agrees. In fact, around 70% of the immune system lives in your gut, making gut health one of the most powerful drivers of overall wellbeing. A healthy gut doesn’t just aid digestion; it plays a key role in immunity, metabolism, hormone regulation, and even how we age. Your gut communicates directly with your brain, influencing mood, cognition, and stress resilience. When your gut microbiome is diverse and balanced, it helps you absorb nutrients more effectively, fuels energy production, and builds resilience against disease. But when things go wrong, a state known as dysbiosis, it can contribute to obesity, diabetes, autoimmune conditions, cardiovascular disease, and even dementia. What is biohacking? Biohacking is about understanding how your body works and making small, deliberate changes to help it work better. It’s the practice of experimenting with your lifestyle, diet and environment to improve energy, focus, sleep, mood and overall health. In simple terms, biohacking means using science, self-awareness and everyday habits to help your body and mind perform at their best. Why a long and healthy life starts in your gut They say good health starts from within, and science agrees. Around 70 per cent of your immune system lives in your gut, making gut health one of the most important factors in long-term wellbeing. A healthy gut doesn’t just support digestion; it affects your immunity, metabolism, hormones and even how you age. Your gut and brain are constantly communicating, which means gut health can influence your mood, focus and stress levels. When your gut microbiome — the community of bacteria living in your digestive system — is balanced and diverse, it helps your body absorb nutrients, produce energy and protect against disease. But when things get out of balance (a condition known as dysbiosis), it can contribute to obesity, diabetes, autoimmune conditions, heart disease and even dementia. After nine years as a biohacker, I’ve learned that improving gut health isn’t complicated. The problem is that there’s a lot of misinformation out there, especially in the biohacking world, where people think you need expensive gadgets or supplements to succeed. You don’t. Through my one-on-one coaching at BiohackHer, I help people focus on what really works. Simple, science-backed habits that improve your health from the inside out. My top simple biohacks for your gut Move your body regularly. Exercise improves the diversity of healthy gut bacteria and reduces inflammation. Get restorative sleep. Aim for seven to eight hours each night. Your gut microbes follow a natural rhythm, so when your sleep is disrupted, they are too. Eat for your gut. Include at least 25g of fibre daily, plus prebiotics like garlic, onions and bananas; probiotics from fermented foods such as kefir, miso and kimchi; and polyphenols from foods like berries, olive oil and green tea. Avoid processed foods and refined sugar as these feed bad bacteria and promote inflammation. Limit alcohol, as it irritates and inflames the gut lining. Reduce stress, as high cortisol levels upset gut balance and trigger inflammation. Pro tips To take your gut health a step further, start the day with a shot of organic apple cider vinegar diluted in water to activate your digestive system. You can also try adding glutamine, an amino acid that supports gut lining health, reduces inflammation and strengthens your immune system. Biohacking doesn’t need to be extreme or expensive. It’s simply about tuning into your body and making small, consistent changes that reduce inflammation and support your gut. When your gut is healthy, everything else starts to fall into place. To learn more, visit www.biohack-her.com. About Azra Azra Alagic is a passionate biohacker, Integrative Nutrition Health Coach and Behaviour Change Specialist. After overcoming her own health challenges, including gut dysbiosis, chronic fatigue and mercury toxicity, she began biohacking to rebuild her health, and now helps others do the same.