A new study suggests that Spirulina, an alga rich in high quality protein and carotenoids, can be used as a vitamin A supplement.
The study was conducted by the researchers at the National Institute for Nutrition and Food Safety in Beijing, China. In the study, children were given four or two grams of spirulina per week for 10 weeks.
The results showed that spirulina is a good dietary source of beta carotene which can effectively increase in vivo vitamin A storage in school age children.
Direct supplementation of vitamin A can be a risk factor as this compound is toxic at high concentrations. Supplementation with spirulina is safe because it provides beta carotene which is only converted into vitamin A as per the need.