Paper Title
Vitamin D3 Requirements (In Health & Diseases) for Fetal, Neonatal, Low Birth Weight, Very Low Birth Weight

Abstract
This presentation will provided advanced understanding of several aspects of vitamin D in childhood in various age conditions Objectives:- 1. Definition of vitamin D deficiency in early life, & effects of it on skeletal system, immunity, & effect it's on exercises capacity 2. Role of profound effect of vitamin D during fetal development 3. Exploration & estimated daily vitamin D requirement during childhood 4. Timing of early vitamin D supplementation & its effect on skeletal growth and the health of very low-birth-weight child 5. Relationship between vitamin D &Ca+ intake & status, as well as the status of other minerals especially phosphorus & Mg, which are crucial for development of rickets 6. Vitamin D deficiency in critical pediatric conditions (Obese, Chronic Renal Failure, Liver Disease, Inflammatory Bowel Disease) 7. Compliance with vitamin D intake recommendation Vitamin D is important for bone and muscle health. Vitamin D helps the body absorb calcium and phosphate from food, which are important for healthy and strong bones. Only a few foods (some types of fish) naturally contain vitamin D, and it is hard to get enough vitamin D from food alone. Margarine, baby formula and some types of milk have added vitamin D, but most people only get about a quarter (or even less) of their vitamin D needs from food. Most vitamin D is made in the skin when it is exposed to the sun. As well as causing problems with bones and muscles, there is evidence that low vitamin D is linked to other health problems including: a higher risk of bowel cancer, heart disease, high blood pressure, stroke, problems with immunity (how the body fights infections) and autoimmune diseases (including diabetes).