No.
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Human hair cannot be digested by humans, so I would hypothesize that we could not digest cat hair either.
grass
Cellulose is digested by cellulase.It is not found in human.
In the small intestine
Digested.
They should be, but be cautious. Some companies do advertise human hair, but it's human hair blend or human hair mixed with animal hair.
Yes Maltose can be digested by the human body. Cellulose can not
Because it is in a form which is already digested e.g honey. Honey is already digested by bees so it is far more easier for the human digestive system to absorb.
digestive
Roughage.
While there are robots designed to mimic human appearance, there are no robots with actual human hair. Some advanced robots may have synthetic hair or materials that resemble human hair, but not actual human hair.
No, there is no human hair in bread.