Enamel is hardest substance in the human body.
61
Chewing gum boosts your brain power.
285
The human body contains over a billion miles of DNA.
147
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
The average person's skin weighs twice as much as their brain.
131
Your thumb is about the same size as your nose.
124
The human brain doesn't stop developing until about 25 years old.
102