Just because “they” say it, doesn’t make it true. Approximately 90 percent of the tales we tell about our bodies just aren’t true, estimates Rachel Vreeman, M.D., assistant professor of pediatrics at the Indiana University School of Medicine. Dr. Vreeman has been dedicated to uncovering the truth behind body fables. Here are 7 things you may have heard from your buddies or the office know-it-all that have been debunked.
- Big feet means big penis.
Many women have found this one out the hard way (no pun intended… maybe a little). Like some myths there is a grain of truth in this one. That’s because a gene called the Hox does play a role in the development of several appendages, including penises, toes, and fingers.
Unfortunately the gene doesn’t appear to make all your limbs grow bigger at the same rate. And the largest studies to date have shown no link between the two, Dr. Vreeman reports, and neither were other common “indicators” like weight or length of index finger.
- You only use 10 percent of your brain.
Some people don’t even seem to use that much… but I digress. We all like to think that we have untapped potential that could be reached if only we could engage more of our brain. Unfortunately brain scans have failed to reveal a huge, expanse of neurons lying dormant. Nearly all of your brain is working almost all the time. Brain damage almost anywhere in your white or grey matter causes noticeable effects, says Dr. Vreeman.
- You won’t get sick if you follow the 5-second rule.
According to Dr. Vreeman, this is one rule that has been rigorously tested. It turns out that it’s not how long the food you dropped stayed on the floor, but the type of food and the type of floor.