Iron can be used by our body for good or bad, depending on which cells get a hold of it.
A new study suggests it may not be the worst thing in the world to clean your baby's pacifier with your own saliva.
Your body works hard to raise its temperature, but in the meantime, you get the chills. Why?
Why does the body go through such laborious misery when we're sick?
How much damage can one little peanut do? An awful lot for those who are allergic.
Does the amount of sleep I get affect how likely I am to catch a cold?
Depression may have an evolutionary benefit. It may improve one's chances of fighting off infection.
Any chimpanzee from Kibale National Park in Uganda will tell you, being top banana has its advantages. But, there are many disadvantages as well.
Why does pollen from plants make your nose run? The answer involves protein and communication.
Are there health risks associated with sleeping with your pet?