My eye is really bloodshot but doesn't itch or hurt? it looks like pink eye! although i've never had it but i've seen other people who have. but i don't feel anything and i didn't even realize it was so bloodshot until i looked in the mirror. could it still be pinkeye?

Why would one lymph node in the neck be swollen and not the other? what causes them to swell?

Which is the lipid molecule that controls what types of molecules can pass though?

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).