It is a common thing among humans that the
taste in their mouth suddenly change when they
become sick from one or more diseases. These
change in taste most times makes the sick
individual to feel that the food is bitter and
cause the individual to lose the urge to eat.
The taste perception process is a simple but a
bit complicated cascade but let's simply break
it down. The tongue contains taste cells that
cluster on each other like banana bunch to form
the taste bud and these taste buds appears as
group of specialized cells scattered on the
tongue called papillae. They are shaped
fungiform (mushroom shapes) in front of the
tongue and they are are other shapes of the
papillae on the side and back of the tongue.
The tips of the taste cells reach toward a tiny
opening on the tongue (the gustatory pore)
through which food chemicals can fall. Various
Nerve endings surrounds the base of the taste
buds and they are sensitive to taste, touch,
temperature and pain system.
The nerves carry messages(either taste or
smell) to the brainstem which assist in arousal
(e.g like from sleep)and then the signal is
interpreted in part of the brain called INSULA
which helps you know what ithe tase is;
whether sweet or not.
The smell contributes to our sense of taste,
Molecules for smell (the chemicals in the food)
move through the back of the throat and reach
olfactory nerve endings in the roof of the nose
and the molecules bind to these nerve endings,
which signals the olfactory lobe(bulb) to send
smell messages to two critical parts of the
brain. One of those brain part is the section of
the temporal lobe (T) which is involved with
memory, particularly memories of place (this is
why smells can bring back powerful images of
your experiences).
These are some of the thing that happens that
causes you to feel your food tastes bitter:
1. When you become sick (example when you
have fever), your temperature rises above
normal body temperature Read more http://www.ishstock.info/2017/01/bittermouthtaste.html?m=1