There’s nothing in the Bible that says we shouldn’t diet. There’s nothing in the Bible that talks about the GAPS diet in particular, so on this one, you’re free to do whatever you like.
There are two Bible verses that come to mind that can help you make a wise decision.
1 Corinthians 10:31 – here we take this literally with whatever you eat or drink, but basically it just means whatever you do in life, do it all for His glory. Will this diet glorify Him? How will it glorify Him?
1 Corinthians 6:19-20 – our bodies are our temple. Will this diet help you treat your body better, in a way that it needs to be treated? Will it starve you of necessary nutrients that your body needs to be healthy? Does this diet line up with treating your body with care, like your temple?
That’s really something that only you can answer, through prayer and seeking His will for your life. ❤️