How Does the Body Regulate Vitamin D?
                                
                                
                                •
                                
                                
                        
                                    
                                    3 min read                                
                            
                                Approximately 80% of the vitamin D in our bodies is synthesized in the skin from sunlight exposure, but this is just the first step in a complex regulatory cascade involving multiple organs and hormones. The body employs a sophisticated feedback loop to maintain a balanced level of active vitamin D, ensuring proper calcium and phosphate metabolism for skeletal and cellular health.