How Chinese medicine understands gray hair?

Condition analysis:
When people first experience grey hair or hair loss, they normally look at their hormone levels or at the thyroid as the possible culprit. Although such imbalances could cause hair loss, according to traditional Chinese medicine (TCM), kidney deficiencies can lead to various health problems, one of which is gray hair. Chinese practitioners believe that inadequate nutrition or prolonged, severe stress could lead to a kidney deficiency, which in turn would manifest itself in an array of symptoms, including gray hair. However, it's possible to strengthen the kidneys and treat the symptoms.

Instruction:
LENTILS
Lentils are a great source of B9. As with vitamin B12, B9 helps with the production of DNA and RNA. It’s also necessary for red blood cell production and plays a vital role in the production of methionine, an amino acid important for retaining hair color.

SPIRULINA
Although the highest concentrations of copper are found in the livers of various animals, the highest amount of non-animal-derived copper can be found in spirulina. It's nicer sounding than "pond scum," but that essentially is what it is: A type of blue-green algae that grows naturally in oceans and salty lakes in subtropical climates.

LIVER
Liver has an abundance of the nutrients that will prevent you from looking like a president nearing the end of his second term in office. Four ounces of beef liver contains a whopping 95.48 micrograms of vitamin B12, a lack of which (also known as pernicious anemia) is associated with early graying. (The recommended daily allowance is 2.4 micrograms for most adults.) As you get older, your ability to absorb vitamin B12 from food decreases. So people older than 50 should eat plenty of foods that contain lots of it. Liver is your one-stop shop.