I suppose that you think to oxygen.
Oxygen is indispensable for life.
Hormones are chcmicals that travel through the bloodstream and affect the activities of other cells. Hormones are the chemical messengers of the endocrine system.
Neurotransmitters
Hormones.
NEUROHORMONES
Chemicals affect the taste sensation communicated to your brain, from sweetness through to sourness.
Hormones of the endocrine glands.
it can move through the bloodstream quickly. Only 12 hours after entering the bloodstream, Borrelia burgdorferi can be found in cerebrospinal fluid (which means it can affect the nervous system
they travel through the bloodstream and affect the activities of cells in other parts of the body
Hormones
NEUROHORMONES
Chemicals affect the taste sensation communicated to your brain, from sweetness through to sourness.
Hormones
Hormones of the endocrine glands.
neurohormones
it can move through the bloodstream quickly. Only 12 hours after entering the bloodstream, Borrelia burgdorferi can be found in cerebrospinal fluid (which means it can affect the nervous system
how does sewage treatment affect household chemicals how does sewage treatment affect household chemicals
That answer you may be looking for is neurohormones, Which are producesd by specialized cells in the brain and travel through the blood stream to affect cells throughout distant parts of the body.
Infections of the teeth and gums, CAN spread to the Heart through the Bloodstream. So, yes, it can effect the heart valves.
The mothers bloodstream then contains alcohol and that makes its way to the unborn fetus through blood and the umbilical chord.
Without chemicals there would BE no climate.