Some Obscurish facts
#1814
Toe and fingernails are made of the same stuff that hair is - a hard yet flexible protein called keratin. This is the same material that a deer's antlers, a horse's hoofs and a bird's feathers are made of!! Fingernails grow four times as fast as toe nails, and the nail of the middle finger grows fastest of all. A toenail takes about 6 months to grow back completely. Finger and toenails can tell a lot about what a person has eaten, or what kind of metals and chemicals they have been exposed to - including drugs and heavy metals such as mercury or lead - they are like a history of a person's exposure for the past 6 months.
Toe and fingernails are made of the same stuff that hair is - a hard yet flexible protein called keratin. This is the same material that a deer's antlers, a horse's hoofs and a bird's feathers are made of!! Fingernails grow four times as fast as toe nails, and the nail of the middle finger grows fastest of all. A toenail takes about 6 months to grow back completely. Finger and toenails can tell a lot about what a person has eaten, or what kind of metals and chemicals they have been exposed to - including drugs and heavy metals such as mercury or lead - they are like a history of a person's exposure for the past 6 months.