2 out of 3 adults in the United States have hemorrhoids.
7
The human brain doesn't stop developing until about 25 years old.
102
In older people, memory is best early in the morning and then declines during the late afternoon.
33
It is possible to go blind from smoking too heavily.
50
Your thumb is about the same size as your nose.
124
There's 100 trillion good bacteria living in your body.
17
A human being loses an average of 40 to 100 strands of hair a day.
133
Enamel is hardest substance in the human body.
61