Here's a study on barley grass mentioned in the linked article.
The study said...
In a study performed at the Nutrient Food and Feed Division, in Tokyo, scientists selected 18 patients with ulcerative colitis. Over the course of four weeks, half of the participants received standard anti-inflammatory medication (including steroids) and the other half were treated with up to 30g of hordeum extract each day. At the end of the study, all of the patients in the hordeum (barley grass) group reported significant improvements in their symptoms - including fewer episodes of diarrhoea and less pain - compared to the group receiving conventional medication.
In addition, further tests revealed that hordeum (barley grass) had succeeded in increasing the amount of friendly bacteria in the patients' bowels too. According to Dr Kanauchi, who led the study: 'Oral treatment with hordeum may have the potency to reduce clinical activity of ulcerative colitis. We believe that these results support the use of hordeum administration as a new adjunct therapy for this condition'.>4
http://www.thehealthierlife.co.uk/natural-remedies/herbs/barley-grass-health-benefits-00859.html