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Everyone has one nostril that is larger than the other.
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
Medication errors are more common among seriously ill patients than with those with minor conditions.