09/02/2026
Hormones don’t work in isolation.
They’re all controlled by light and circadian rhythms.
Cholesterol, vitamin A, leptin, cortisol — everything is connected through sunlight.
Here’s the big picture most people miss.Leptin is the master hormone. Discovered in 1994, it regulates energy balance. Leptin resistance usually shows up BEFORE insulin resistance.
Type 2 diabetes is largely a disease of light, not carbohydrates.
When your light environment is broken (no morning sun + blue light at night), leptin signaling fails.
Your body thinks it’s starving even when it has plenty of energy stored. This cascades into metabolic dysfunction.
Cholesterol is the building block for cortisol, s*x hormones, pregnenolone, and vitamin D. Demonizing it and lowering it aggressively with statins blocks hormone production.
In the Framingham Heart Study, 75% of all deaths occurred in people with average-to-low cholesterol levels. Low cholesterol is not protective (see pic) — it’s often a sign of deeper hormonal issues.
Your body makes cholesterol for a reason. The problem isn’t cholesterol itself — it’s when it becomes oxidized due to poor lifestyle and light environment.
Morning sunlight is the most powerful hormone regulator you have. It programs your circadian clock, activates vitamin A, stabilizes cortisol timing, and allows proper melatonin at night.
Artificial blue light at night destroys melatonin and throws cortisol off schedule.
This single habit disrupts more hormones than most people realize. U = FUBAR
Vitamin A works with light. Sunlight activates it (photoelectric effect). It binds to melanopsin to help set your biological clock and supports thyroid hormone activation.
Many hormone issues blamed on “adrenal fatigue” actually start as adrenal resistance in the brain (paraventricular nucleus) due to circadian mismatch.
All hormones run on light signals. When light input is wrong, resistance develops at multiple levels: leptin → insulin → adrenal.
Practical tip #1: Get outside within 30 min of waking. No sunglasses/contacts/eye glasses. 10–30+ minutes of bright light. This is non-negotiable for hormone health. As naked as can be
Practical tip #2: High-protein breakfast (50g+) soon after sunrise. No snacking ever. Finish eating several hours before bed and before it gets dark. 4 is optimal for leptin
Practical tip #3: Block blue light aggressively after sunset (glasses, bulbs, screens). Protect melatonin — it works with leptin for deep recovery. Recommendations: https://www.improvementwarriorfitness.com/blueblockers/
Your light environment beats diet and exercise. You cannot out-train or out-eat broken circadian biology. Most “hormone problems” are actually light problems.
Stop chasing symptoms with supplements and medications while ignoring the master signal (light). Fix the light first and watch everything improve. It can't fix everything, but it is a start
Prioritize morning sun. Protect your nights. Let your hormones do what they’re designed to do under natural light. Who’s starting their morning sunlight habit today?
Further rabbit hole: