Please advise iodine chnging personality

Hi I need to ask some questions about iodine.
My husband recently started drinking Iodine because his friends are doing it. I think he is trying to fit in at work and doing what every body else is doing so he isn't the odd man out. He had a lot of papers that had stuff from this web site on it and pills he had to get to take with it and a lot of other so I hope I can find more stuff out. He tried to get me taking it and giving it to our 6 year old son but I put my foot down. He pumps himself full of vitamin pills in the morning and all day and night I don't know what happened to him but his personality changed drastically since this fad started and he is going over board with it and with our son. He won't let our son play with his leap frog unless it's almost bed time and he has to ride his bike or jump on the trampoline to earn his leap frog. He is taking this health nut thing to the extreme and isn't the same person anymore and frankly it scares me.
I am a nurse and I think this is dangerous and going to make him sick in the long run. The people he works with are much younger and in better shape than him and are gym rats. We are not the kind of family that lives in a gym and shops at whole foods and it's challenge to get our son to drink only water and organic juice. Who can afford to live off this kind of eating? My husband has high blood pressure, high cholesterol and is borderline obese. I think he needs to take it slow and take his medicine and not make drastic changes. He is an IT guy so all he does is sit all day at work and come home and play playstation with our son so he is not use to breaking a sweat. He wants our son to play basketball with him and he looks like he's near death when they are done and he had the nerve to tell me I should be getting more excersize and wants to buy bikes for us to go for family bike rides. I run around all night at work and keep up a house. I was insulted and don't know why all of a sudden we aren't good enough.
What I want to know is are all these doctors that are saying all this stuff about even real doctors or are they people who train in hollistic and call them selves doctors? I understand exercising and eating right but it is something you have to ease in to and not force your family members and kid to do. When we have obese patients at work we start by moving their arms and take it slow to ease them into it. What are iodines affect on the brain and can it make some one's personality change? Its almost as if I am an outsider now because I won't take his pills or drink his iodine. The people he works with are like a click and they smile at you but you know they judge you. They had some kind of thing at work yesterday and he wanted to bring our son but not me. I think the Iodine is affecting his brain and he is having a mid life crisis. Is this just a phase or can this really vhang your brain chemistry? I want my husband back. I want the guy I married back not this total stranger who suddenly is too good to eat pizza once a week and watch a movie. It's not like we do it every night just once. It's our Friday night thing to rent a movie and order out. so now I sit alone because him and our son went to go ice skating which neither of them have done before or had any interest in. Who is this guy?