This is a healthy brown, formed stool. It appears slightly crumbly, so increasing fiber intake and ensuring adequate hydration is recommended. Given your IBS and lactose intolerance, it's advisable to adjust your diet to avoid digestive discomfort.

Your stool health is a bit concerning. It appears as lumpy sausage with some fragmentation, and the color is very dark brown. Consider adjusting your intake and activity levels, and review your diet for better gut health.