SIBO can be a perplexing condition, causing either unwanted weight loss or gain. For those struggling with unexpected weight changes, know that you're not alone. Bacterial overgrowth can interfere with nutrient absorption, leading to deficiencies and weight loss, while fermentation and metabolic changes may contribute to weight gain. Diarrhea, constipation, and appetite changes are common culprits. If you suspect SIBO, seek guidance from a healthcare professional. With proper treatment, including antibiotics and dietary adjustments, it's possible to manage symptoms, stabilize weight, and restore gut balance. Remember, your journey to better health is unique, and support is available.