Note: Readers commenting under today's Friday Happy Hour post brought up an age old question: "Is blood blue when it's inside the veins?" Matt Soniak kindly put together this response. Why do veins ...

The blood inside your veins is dark red. So, many people wonder why veins look green or blue through the skin instead of red. Veins are types of blood vessels. The other blood vessel types are ...

While for many people the biggest concern with varicose veins is how they look, doctors say there are links between the condition and serious health issues that involve blood clots in the deeper veins ...