Your fat cells respond to light. Most women over 40 have no idea how much their light environment is affecting their body composition. You know how it feels easier to lose weight once spring hits? Energy is better, everything just clicks? That’s not a coincidence. That’s your biology responding to more light exposure. And there’s a framework behind it you can use year round. I’m 49, Nutritionist, 20 years working with women’s hormonal & metabolic health. Here’s what you need to know. Morning — outside without sunglasses within 60 minutes of waking. Melanopsin receptors in the retina activate your master clock, triggering cortisol to rise at the right time so it drops at the right time. Research confirms this same mechanism also reduces cortisol when it’s elevated at the wrong time, light is both a trigger and a regulator depending on timing. Afternoon — sun on skin when possible. This is when the eye detects the shift in blue-to-yellow light ratio, adjusting sensitivity and buffer...