Juice fasting and family oposition

I have been wanting to do an OJ juice fast as soon as my orange tree ripens. I was talking about this to my husband and he got all upset. He started talking about last time I did a juice fast(a Norman Walker type) it made me sick and thin.(not true I just went through some detoxing) He thinks its dangerous to do an extended one(like more than 3 days)

So what do people out there do if there is opposition? I have always been into natural living/back to nature and herbs and he has joined me in allot of it.

I don't want to cause undue stress on him but I don't agree with his philosophy on health. Its just frustrating because we are like two peas in a pod over everything else except some healthy living issues.

I know its not him trying to be mean or anything he just has a different opinion from me.

Has anyone else had problems with close family members having undue concern?