They also noted that even johnny carson got his facts wrong when he joked about it saying for three days after death hair and fingernails continue to grow but phone calls taper off original. Death puts a stop to the supply of glucose and therefore to fingernail growth.
After death dehydration causes the skin and other soft tissues to shrink.
Hair and fingernails grow after death. What really happens is that the skin may retract around them making the hair and nails prickle up and jut out more prominently. The body doesn t produce more hair and nail tissue but both of these things do grow in the days. Each hair sits within a follicle that drives its growth.
For reference a single human hair is usually 100 micrometers thick. No your hair and nails don t still grow after death. No your nails and hair don t continue to grow after death dying is undeniably grim but it.
The suggestion that fingernails and hair continue to grow after death is nothing more than a myth which has no scientific basis. As you die your body dehydrates. It is a myth that fingernails and hair continue to grow after death.
Instead a persons fingernails and hair may appear longer because the skin around them has retracted according to the dermatology clinic at uams. If you take the average nail and hair growth of a person in a day about 0 1 millimeters for nails and 0 5 millimeters for hair then adjust for old age hair and nail growth slows with age you could figure that the hair and nails of a deceased person grow about 3 micrometers. It comes up a lot long after it s been thoroughly debunked but just in case you missed the memo.
Nails and hair may appear to keep growing but this is because flesh shrinks as it dries out retracting the skin to make the nails and hair appear longer. Hair and fingernails may appear longer after death but not because they are still growing. The reason the hair and nails don t shrink is.
According to the bmj article legendary host of the tonight show johnny carson also reportedly uttered the following joke for three days after death hair and fingernails continue to grow but phone calls taper off. This gives the appearance of growth but it s really the skin being pulled back. There is a little truth in the story though because death isn t an instantaneous process.
A similar process occurs for hair. This causes the skin and organs to shrink in size remember your body is made out of 70 of water but not the hair and nails. Nail and hair growth by technicality this is a technical function not an actual function.