Diarrhea Help!!

my husband started two days after me, so he is on day 2 today - and he has felt horrid for the entire two days. Awful headaches both days, and today after his SWF, diarrhea started and continued for the rest of the day. He says he has gone 30+ times by now (10 pm) and feels totally depleated, not feeling great. We are drinking the same juice (I've been making our day's worth every evening)and I'm feeling awesome, no such plumbing problems. I have inspected the goods in question, and they seem to be not much different than my own DAY2 eliminations - except I only had them post Tea/SWF ... not ALL DAY LONG.

Any idea what is going on? This didn't happen to him on our last, failed attempt in January (failed b'c I bailed and pressured him to stop.) HELP!!