Obesity is a symptom of gluten sensitivity by: Kerri Knox, RN- The Immune Queen!
Obesity IS a symptom of gluten sensitivity. Maybe if you had found out that you were gluten sensitive before you had surgery, it's possible that you might have been able to lose weight and avoid surgery.
So the answer is that it's unlikely that the surgery caused it or that post surgery symptoms are 'mimicing' gluten sensitivity. You've probably had symptoms of gluten sensitivity for many years (obesity, among other symptoms that you've probably had in addition to obesity), but no one recognized them.
Kerri Knox, RN PS: Get the Real Food Summit to get you on the path to eating the RIGHT way for good health. End the confusion about what to eat today!