Systemic candida?

Hi Dr Jeff I think my son may have systemic candida. I have given him SF722 on and off but haven't followed your plan with any great diligence, although I have successfully 'cured' myself using your plan. My son's symptoms differ from mine though. He is only 6 and is very skinny despite what he eats, he can't seem to gain weight. He gets a lot of anxiety and fatigue and more recently has been complaining of knee pain. He is on the waiting list to see a paediatrician, which I don't hold much faith in as I don't trust mainstream medical professionals at all. I have had him taking colostrum for a leaky gut but so far no improvement.
I usually limit his intake of sugar and wheat products but we were recently on holiday and I stupidly thought I'd let him eat what he wanted from restaurant buffet meals, of course he chose a lot of bread buns and sweet desserts, within a few days his energy levels flagged and his joint pain appeared.
Can candida cause all the symptoms he has? Will the SF722 help? If so what would be the dosage. Any other supplements you could recommend. I am hoping to get a handle on things before his appointment so we hopefully don't need to go. I really need to hear something positive now. I have also started him on a GF diet just last week. I look forward to hearing from you. Tweet