Hi,
I have just started reading into this and one of the things I came across was that animals when sick will eat another's pooh to get better, so it occurs in nature.
Yes it is very much a case of what have we got to loose if you can get over the gross factor (well its more the smell than anything).

NSD almost all the way
No dairy hard cheeses occasionally and homemade ghee
Still trying to work out what makes me tick and what makes me drop

'Chew your drinks and drink your foods'
'Let your knife & fork do the work of your teeth and let your teeth do the work of your stomach'
Mahatma Gandhi