Wow not do a 40 day dry fast. We will send flowers to your funeral?? You actually believe Jesus dry fasted for 40 days in the desert or whatever? PLEASE give your head a shake.
Dry fasting might be ok for a few days but its still dangerous and of course for very long periods of time. But hey its your fast and your life and body.
Water is unnatural? Do you know how many 'natural things " are deadly? "Natural" mushrooms, natural radioative elements,many many natural poisonous plants ,chemicals,gases,etc.etc. natural is not necessarily better.
The three things no one can live without are air,water and food. Why not try going without air for awhile.
Seriously man dry fasting? Day or two and you will be into dehydration symptoms many of which are quite unpleasant.But respect your right to believe in what you want.