Whilst ever people seek out magic potions they will never find...

Whilst ever people seek out magic potions they will never find the magic and the resilience of the human body to survive ON LESS!

Less is better in all categories, how long did POW's survive with the barest of rations? Once you go below a level of BMI the body will seek out and consume cancer cells to survive?

In my life I have ever seen such an overabundance of food varieties to consume (but I don't participate, it's a post war thing), to think post WW2 we were eating horse meat as milking cows were too valuable for obvious reasons. Anyone for equine? People would throw up just thinking about it, maybe our pets get better quality meat than we realise, if you disregard the offal?