Ultraprocessed foods engineered to target people’s reward centers

Dear Doctors: Why is ditching junk food so hard? I know I should have an apple instead of a doughnut, but when I crave a snack, I don't reach for the fruit bowl. Making and then breaking the promise to eat healthy makes me feel like a failure.

How can a junk food addict like me get back on track?

Dear Reader: In framing your question, you used two revealing words – 'crave' and 'addict.' And based on…