5 Health Foods , That Can Make IBS Worse.<br />Irritable bowel syndrome affects <br />10 to 15% of the population.<br />These 5 healthy foods <br />could trigger a flare-up.<br />1. Garlic is known to rapidly ferment <br />in the gut without getting absorbed properly.<br />2. Avocados should be avoided <br />to better manage IBS symptoms. .<br />3. Whole wheat, high in insoluble fiber, <br />can worsen symptoms.<br />4. The milk sugar lactose and the protein casein should be avoided, which rules out most dairy.<br />5. Cruciferous vegetables such as kale, Brussels sprouts and cauliflower may worsen gas and bloating.