My husband was diagnosed with SIBO a few years ago. He's is severely underweight, suffers from painful gas, and low energy. He's been on antibiotics 2x. They helped the first time, but not the second. We've been to 2 different doctors and neither have been concerned that he is 6' tall and under 130 lbs. Can anyone recommend a Dr in NYC or Long Island that is familar with SIBO? Maybe someone with a more holistic approach? Also, I've been researching the Specific Carbohydrate Diet. Is this something worth trying? His doctors have told him to avoid fat since he does not digest it and to only eat carbs. He's been doing this for a few years and doesn't suffer from diarrhea/constipation anymore, but he is very frail at 33 years old. Thanks so much.