He only eats 1 or 2 times a day? If he thinks he might have hypoglycemia, eating 5 or 6 small meals each day is the best idea. Also eating a low carbohydrate diet is important. Eating enough protein is very important.

One supplement that has helped me decrease the symptoms of chemical sensitivity is molybdenum. I take 1,000 mcg a day, but 500 mcg a day might be enough. Thorne makes 1,000 mcg molybdenum capsules. Carlson makes 500 mcg molybdenum tablets.