The Global Prevalence of Vitamin A Deficiency in Populations at Risk
                                
                                
                                •
                                
                                
                        
                                    
                                    5 min read                                
                            
                                According to the World Health Organization, vitamin A deficiency (VAD) affects an estimated 190 million preschool-age children worldwide, primarily in Africa and Southeast Asia. This staggering statistic highlights a critical public health crisis, demanding a deeper understanding of the global prevalence of vitamin A deficiency in populations at risk.