I was surprised by this:
What Happens to Make Hair Turn Gray?
The normal process of graying is associated with the process of aging.
Not All Graying of Hair is "Normal"
While we usually associate graying of hair with advancing age, there are a variety of other causes for loss of hair color. For example:
Metabolic conditions such as thyroid dysfunction;
Autoimmune disease such as multiple sclerosis;
Certain viral diseases;
Congenital conditions that often include physical anomalies;
Long-term starvation or vitamin deficiencies; and,
Toxic environmental exposures.
Just wondering if anyone else feels this way ...