Relationship: Respiratory System and vitamin A

Evidence supporting the use of: Vitamin A
For the body system: Respiratory System

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Vitamin A is scientifically recognized for its role in maintaining the integrity and function of epithelial tissues, including those lining the respiratory tract. Adequate vitamin A levels help preserve mucosal barriers, which are crucial for defending against pathogens that enter through the airways. Deficiency in vitamin A has been associated with increased susceptibility to respiratory infections, particularly in children. Several studies and reviews, including those by the World Health Organization, have demonstrated that vitamin A supplementation can reduce morbidity and mortality from respiratory infections in vitamin A-deficient populations, especially among children in developing countries. However, in populations where vitamin A deficiency is rare, supplementation does not consistently show benefits for respiratory health and can even be harmful if taken in excess. Thus, while vitamin A's role in supporting respiratory health is validated in specific contexts (primarily deficiency states), universal supplementation for respiratory health is not broadly supported by current evidence. Most scientific support pertains to deficiency correction rather than performance enhancement or disease prevention in the general population.

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Other body systems supported by vitamin A

Blood
Brain
Digestive System
Eyes
Gastrointestinal Tract
Glandular System
Hair
Immune System
Intestinal System
Lungs
Mucus Membranes
Peyer’s patches
Reproductive System
Respiratory System
Senses
Skin
Small Intestines
Teeth
Thymus

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Health Concerns

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Evidence supporting the use of: Vitamin A
For the body system: Respiratory System

Table of Contents

Synopsis

Other ingredients that support Respiratory System

Other body systems supported by vitamin A

Products containing vitamin A

Health Concerns

Brands

Evidence supporting the use of: Vitamin AFor the body system: Respiratory System

Table of Contents

Synopsis

Other ingredients that support Respiratory System

Other body systems supported by vitamin A

Products containing vitamin A

Evidence supporting the use of: Vitamin A
For the body system: Respiratory System