Dr. Jack Kruse, a board-certified neurosurgeon, gives a shocking explanation of why the sun—not food—is what controls blood sugar, mitochondria, and the risk of diabetes.

And here are 10 shocking things he revealed:👇

1. The sun changes how your body handles blood sugar. pic.twitter.com/hi9346VVNQ
— Lorwen Harris Nagle, PhD (@LORWEN108) August 1, 2026

Lorwen Harris Nagle, PhD @LORWEN108 · ![0ae88d10e22463b960bc3dd58e91ad79.webp](https://files.peakd.com/file/peakd-hive/manorvillemike/23xyZ9d3RCh22XnzidfR5fjZuhdEfeBxPiNd8BDB2BALLUBQLyMSSu3mYGWQyPyEAFthS.webp) Aug 1 Kruse argues that sunlight is not just warming your skin. It sends timing signals that tell your body: • when to release hormones • when to burn energy • when to store glucose • when to repair itself His shocking point: The same food affects your body differently Show more Lorwen Harris Nagle, PhD @LORWEN108 · Aug 1 2. Bright light at night makes the body biologically confused. Your eyes see light. Your brain interprets daytime. But the clock says it should be night. That mismatch disturbs melatonin, sleep and the body’s normal rhythm of insulin sensitivity. Lorwen Harris Nagle, PhD @LORWEN108 · ![skin-burn.webp](https://files.peakd.com/file/peakd-hive/manorvillemike/23z7LGrpa5KrGWN2b2pQJmGRuWNzhZtSUGHNFFoRdtgC3hcNaeGxqZugvTccATv5G2qSa.webp) Aug 1 3. Morning light starts the body’s metabolic clock. When you see natural light early in the day, your brain receives a clear message: The day has begun. Kruse believes missing that signal can leave your hormones and metabolism operating at the wrong time. Lorwen Harris Nagle, PhD @LORWEN108 · Aug 1 4. Your eyes are not just for seeing. Special cells in the eyes detect light and send timing information to the brain’s master clock. That clock coordinates: • cortisol • melatonin • appetite • sleep • glucose regulation Your metabolism is running on a schedule. Lorwen Harris Nagle, PhD @LORWEN108 · Aug 1 5. Mitochondria do not respond only to calories. They also respond to the environment surrounding those calories: • sunlight • darkness • sleep • temperature • movement According to Kruse, a “perfect” diet cannot fully compensate for living under artificial light all day Show more Lorwen Harris Nagle, PhD @LORWEN108 · Aug 1 6. Poor sleep is a blood-sugar problem. After a badly timed or shortened night of sleep, your cells respond less effectively to insulin. You crave faster energy. You feel hungrier. And the same meal affects you differently than it would after restorative sleep. Lorwen Harris Nagle, PhD @LORWEN108 · Aug 1 7. The time you eat matters as much as what you eat. Your body is generally better prepared to process food during its active daylight period. Eating heavily late at night sends energy into a system preparing for repair and sleep. Kruse’s point: Your biology reads the clock before it reads the menu. Lorwen Harris Nagle, PhD @LORWEN108 · Aug 1 8. Sunlight does far more than produce vitamin D. Different wavelengths of natural light reach the body throughout the day. Kruse argues that these changing frequencies help coordinate hormones, circulation, cellular energy and sleep. A vitamin D capsule cannot reproduce the entire solar signal. Lorwen Harris Nagle, PhD @LORWEN108 · Aug 1 9. Modern life creates a metabolic contradiction. We spend the day indoors under weak artificial light. Then expose ourselves to bright screens at night. Our bodies receive: • darkness during the day • simulated daylight at night • food at every hour Kruse believes this Show more Photos from browser Images //