Do you have a question about healthy eating? Email EatingLab@washpost.com and we may answer your question in a future column. Your diet could be disrupting your sleep.

To find out, we tapped dietitians for the lowdown on white meat vs. dark meat, plus how to choose the best one for you (whether you’re eating turkey or chicken).

Bill Ward is reflecting on the final Black Sabbath show and what it meant to be back on stage with the band for the first time in 20 years.