Human feces can be used as fertilizer to grow food, HOWEVER it should not be used. Asian countries collect human feces and use them in their rice paddies and gardens as fertilizer.
Human feces contain heavy metals that become concentrated in the food chain when the feces are used as fertilizer. The effects of heavy metals are shorter people from poor bone development, with central nervous system damage resulting in poor eye sight, reduced immunity systems and other ailments.
In addition, human feces can contain pathogens that can be passed on to consumers. Source(s): College Class on chemistry in the enviorment
No, it shouldn't. No carnivores feces should be used as fertilizer, only strictly plant eating animals like horses, and maybe chicken manure and maybe fish like Indians used to do. Even cow manure should not be used, reason being is that cows have more than one stomachs, and their food is very processed, therefore their waste is everything that wasn't even used the second time around. That's why their waste is dark and smells bad, whereas horse manure looks like grass.
A humans feces with the typical standard diet are filled with toxins and heavy metals that your body is getting rid of through your waste. Most of them stay in your body unless you are detoxing, but if you don't eat the healthiest, basically your waste is your body's way of getting ride of all of the crap that it couldn't use. Using it for food could cause diseases and....I don't really know what else.
not directly,it should be composted with other bio-mass first. but if have compost to mix with it why not be safe and skip it? there are ways to have it turned into safe soil,but is a process i don't know enough about to speak about it with any sureness.