First it was high heels, now it’s flip-flops. More of our favorite shoes are getting a thumbs down.

Nine out of 10 orthopedic doctors recommend “just say no” to rubber flip-flops. Actually, I made that statistic up. But the latter part of the sentence is true. Doctors at New York City’s Mt. Sinai School of Medicine have issued a health alert about probably the most beloved summer footwear in this country.

They say prolonged use can lead to muscle strain in the toes, ankles, legs, hips and back. To add bad to worse, it can lead to arch pain, plantar fasciitis and nerve problems.

But if you insist on wearing flip-flops, slather your feet with sunblock for sun damage is yet another issue to worry about with those dang flip-flops.