Revealed: seven great medical myths
Reading in dim light won't damage your eyes, neither do you need eight glasses of water to stay healthy. Read on for more such revelations.health and fitness Updated: Dec 24, 2007 15:29 IST
The majority of eye experts believe it is unlikely to do any permanent damage, but it may make you squint, blink more and have trouble focusing, the researchers said
Shaving makes hair grow back faster or coarser
It has no effect on the thickness or rate of hair regrowth, studies say. But stubble lacks the finer taper of unshaven hair, giving the impression of coarseness.
Eating turkey makes you drowsy
It does contain an amino acid called tryptophan that is involved in sleep and mood control. But turkey has no more of the acid than chicken or minced beef. Eating lots of food and drink at Christmas are probably the real cause of sleepiness.
We use only 10 per cent of our brains
This myth arose as early as 1907 but imaging shows no area of the brain is silent or completely inactive.
Hair and fingernails continue to grow after death
This idea may stem from ghoulish novels. The researchers said the skin dries out and retracts after death, giving the appearance of longer hair or nails.
Mobile phones are dangerous in hospitals
Despite widespread concerns, studies have found minimal interference with medical equipment.
The research was conducted by Aaron Carroll, an assistant professor of pediatrics at the Regenstrief Institute, Indianapolis, and Rachel Vreeman, fellow in children's health services research at Indiana University School of Medicine.