peter
the 5:2 operates on 2fronts.. mosely followed r&d then tested on himself. core interet 2 avoid premture death hs father suffered. the rest is history he became its champion.
the key benefit biochemically is stimulating the bodies natural and effective rpair mechanism.
the repair processis largely heavily dialled down in a hi protein environment.
so in evolution terms when foo d readily vailble build new. 2dy this is always..= supermarket
life expectancy hugely different once human started farming & has kept growing ..
by 30 need alot more repair than build new.
5:2 drops protein levels when followed over 4+ week period this allws the repair mechanism to kick in .. which is g8 really fantastic not to be ignored..
to triggr repair faster u could do 1 or 2 weeks keto then a 7 day water only fast. realistically that does not resonate with many people.. it is spcialist territory..
weight loss imo is in largely dueto shrinking stomach.. so 2 days fast = shrink 5 dys go for your life. a few weeks in it takes effort to want to finish a maccers burger and chips..
hopefully iit goes without saying sugar soda driks are out..
get well

cheeers AP