V i t a m i n B 7
Vitamin B7 (Biotin) is necessary for cell growth, helping in the synthesis of DNA and RNA, as well as the production of fatty acids and the metabolism of fats, proteins and carbohydrates.
Biotin is involved in the metabolism of both sugar and fat. In sugar metabolism, biotin helps move sugar from its initial stages of processing on to its conversion into usable chemical energy, maintaining adequate levels of sugar in the blood, stimulates the body’s response to insulin.
And Biotin is also equired for function of an enzyme that puts together the building blocks for the production of fat in the body. Fat production is critical for all cells since the membranes of the cells must contain the correct fat components to function properly.
Vitamin B7 helps in the growth and maintenance of muscle tissues and repairing these tissues in case of any type of damage. It also ensures optimal growth of bone marrow.
Because glucose and fat are used for energy within the nervous system, biotin also functions as a supportive vitamin in this area.
Biotin, as well asVitamin B5 are important for cell division and copying DNA information into new cells.
Biotin is responsible for a healthy skin and controls the correct distribution of the color pigment. It is responsible for the growth and maintenance of healthy hair, and controls hair loss and premature graying.
It is said that bacteria living in the lower part of our intestines, called the colon, can produce biotin.
30 µg RDA - 500 mg UL
RDA (recommanded dietary allowances) per day 
UL (upper intake level) per day 
 Dietary Reference Intakes: Vitamins.
The National Academies, 2001
 Risk Factor: Vitamin Deficiency
Andreas Jopp, 2010