Free Radicals and the Human Body

By Dr. Lorna Mistranski
The best way to fully comprehend what free radicals are is to look at them from a cellular level in that the human body is made up of all kinds of cells.

The chemical bond of a cell is comprised of various types of molecules that are held together with one or more atom.

Atoms are comprised of protons, neutrons, and electrons whereby the total amount of protons that are in the nucleus determine how many electrons will surround them.

The role of the electrons is to manage chemical reactions that occur inside the atom as well as the substances that makes the atoms form molecules. Much like planets, electrons revolve around the atom in one or more shells.

When two electrons fill the innermost layer it is considered full. Once the second shell is full, the process stats all over again.

The most important structural characteristic of an atom for determining its chemical behavior is the number of electrons in its outer shell.

A substance that has a full outer shell tends not to enter in chemical reactions. Ultimately, atoms seek to reach a state of maximum stability, an atom will try to fill its outer shell by:

Adding or dropping electrons that will either fill or empty the atom's shell

Attaching to other atoms in a attempt to share electrons to have a complete outer shell

Atoms very frequently finish this outer shell by sharing electrons with other atoms. This allows the conditions to be satisfied for what is needed to the atom to sustain maximum stability of the molecule.

Most of the time, these bonds do not tear apart in a way that leaves an atom with an odd, unpaired electron. When this does occur however, free radicals are formed; they are very unstable and react swiftly with other compounds in attempt to gain the needed electrons for stability.

The most common way free radicals attack is by finding the closest molecule that is stable and from there they begin the process of stealing electrons. When the molecule that is attacked starts losing the electrons, it becomes a free radical as well. When this process begins, it creates a chain reaction in which the end result is a disruption of a living cell.

The process of metabolism is frequently when free radicals occur and sometimes even when fighting off viruses and bacteria. Other producers of free radicals derive from pollution, cigarette smoke, radiation, and pesticides.

Typically, the body is able to handle free radicals, but if antioxidants are unavailable, or if the free-radical production becomes excessive, damage can occur. Most importantly is that free radical damage accumulates with age.
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