Sarah Klein is a health writer, editor, and certified personal trainer with over a decade of experience in media. She has held editorial positions at LIVESTRONG.com, Health, Prevention, and The ...

ETFs are open-end funds while investment trusts are closed-end funds Tim Smith has 20+ years of experience in the financial services industry, both as a writer and as a trader. Dr. JeFreda R. Brown is ...

Arteries carry oxygenated blood away from your heart. They have thick walls and a muscular layer that keeps your blood moving. Arteries can be as wide as a nickel (about two centimeters). They are the ...