Did your husband tend to eat a lot of food the past week? Perhaps more than he was accustomed to? That could have caused a slight gain for the first week. He should see some losses starting the second week though. Just remember, in case, you cannot gorge and overeat on Atkins. Many people believe you can. Even during Induction you should eat only until you are satisfied.

Was he doing exercise? He must. Does he have a great deal of weight to lose or only a minor amount?

Since you said you both followed Induction to the letter, I won't ask any more. haha. Hang in there and he should see some losses coming.

Good Luck!