Cholesterol

You may have heard that eggs are bad because they cause high cholesterol. That was the conventional wisdom since the 1960s, but it's far from the whole story. We've learned a lot about cholesterol since then. It's all about fats, which we need, but not a lot, and come in many different types, some more harmful than others. Then there's HDL, or good cholesterol, which counteracts LDL, or bad cholesterol, and it's hard to keep up with which is which and how to regulate them in your body. Luckily, we have the TED-Ed lesson to set us straight on cholesterol and how to keep our arteries in good shape. (via Geeks Are Sexy)