Does an apple a day REALLY keep the doctor away? Should I choose organic? Is there arsenic in apple juice? Get the facts and meet a fantastic foodie who's crazy for apples and a farmer who makes it her business to grow them.

Take our latest poll! What is your favorite food to grill?

For most, Memorial Day Weekend officially kicks off summer grilling season! Perhaps you're stocking up on charcoal and filling propane tanks to prepare for another great season of cooking out. But don't forget about food safety. Here are a few tips to keep your food safe, from the USDA's Grill it Safe program.

In his recently-released book “Salt Sugar Fat,” investigative reporter Michael Moss says scientists at major food companies are well aware that salty, sugary, fatty foods reward the same pleasure sensors in our brains as drugs. He further contends that food companies have manipulated consumers in this manner to increase sales of their products, contributing significantly to the nation’s obesity problem.

Best Food Facts went to Dr. Sheri Zidenberg-Cherr, co-director at the University of California-Davis Center for Nutrition in Schools, to get her perspective. In her research, she has studied the impact of multi-faceted approaches to nutrition education on the dietary and lifestyle choices of school-aged children.

The Theory: You can re-grow lettuce in water.

The Verdict: It makes a cool science project for the kids, but it’s not something you would want to eat.

We noticed a post on Facebook telling friends to save the stump at the end of the lettuce so you can re-grow it in water. We wanted to know if it was true. Should we all start saving the end of our lettuce and put it in water, so that it will grow back?

To answer our questions, we reached out to Dr. Joe Kemble, Professor of Horticulture at Auburn University.