Mind is the second most abundant substance in the human body
The most abundant chemical substance in the human body is water. There are a lot of H2O molecules throughout the human body.
Blood vessels are the most abundant structures
collagen (:
The most important cations in the human body are sodium, potassium, magnesium, and calcium ions
ejaculation
calcium
magnesium
Magnesium
Oxygen
The most abundant element in any organic structure, including the human is hydrogen.
Water is the most common molecular subsance found in the human body(~98%). and phosphorous is the most abundant element in human body.