Hi @mns , please keep in mind this Connect page is specifically designed for the topic of weight management, so we cannot always address more specific nutrition concerns. We do have a post coming up about hypothyroidism, however, there is no evidence that your nutrition plan should change based on this type of diagnosis. Generally, it is not necessary to limit soy / dairy if you consume these items in reasonable amounts. Have you figured out which types of whole foods do not exacerbate your IBS or worked with a gastroenterologist on management?