Does anyone have any insights into a problem with protein digestion? A friend has been getting overwhelming panic attacks and muscle cramps for some time now, which do respond to a certain extent to Beta-blockers or benzo. This friend accidentally found out that reducing protein intake reduced symptoms. Cutting out meat portions for 2 years meant no symptoms, but also a steady weight loss. Blood tests, including endocrine levels, are normal - could it be a brain/autoimmune thing?