Though the prevalence of nutritional deficiencies is common, these are convert deficiencies. The nutrient cannot always be detected clinically as the deficiencies are masked and compensated by self regulating processes of redistributing theutilization of nutrients in the body, arresting hair growth during stress,sickness,exertion,recovery,etc.Which we know as telogen effluvium, and by novel mechanisms like autophagy. In deficiency states,body conserves the nutrients by restricting hair growth.
