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Your biological age reflects your physical health and can differ from your actual age by years. How old are you, really? The answer is written on your face. SEE SUBSCRIPTION OPTIONS

5 STORIES NOT TO BE MISSED

We reserve our best storytelling, photography, and interactive features for our premium subscribers. Check out these exclusive stories you've been missing.

1. India is reinventing its energy strategy—and the climate may depend on it. 2. Legends of Texas come alive along this wild frontier. 3. Can gum infections trigger arthritis symptoms? There's growing evidence of a link. 4. Was the ‘Colorado Cannibal’ a villain or a victim? You decide. 5. Interactive: What’s behind the expected surge in EV sales?

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Much of our food is manufactured to be irresistible to us. Experts say this trend has long-term health consequences. + LEARN HOW SUGAR AFFECTS HEALTH Believers call him the Son of God. Skeptics dismiss him as legend. Learn what archaeology tells us about the real Jesus. + HERE ARE THE FACTS A new diet that tricks your body into thinking it’s fasting may have real health benefits and help you live longer. + GET THE SKINNY ON FASTING

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