Astaxanthin
Benefits of Astaxanthin
- Eyes
- Food source: Made by microalgae, particularly Haematococcus pluvialis, which is the usual source for plant-based supplements.
What is Astaxanthin?
Astaxanthin is a carotenoid. Carotenoids are naturally occurring pigments made by plants, algae and some microorganisms. They include Lutein, Zeaxanthin, Meso-zeaxanthin and Astaxanthin. Lutein, Zeaxanthin and Meso-zeaxanthin collect at the back of the eye, where they form the macular pigment, which filters natural and artificial light. Astaxanthin is the reddish pigment that gives salmon and shrimp their colour. They get it from the algae they eat.
What does the research say about Astaxanthin?
Carotenoids have antioxidant activity, meaning they can neutralise 'free radicals' (unstable molecules). Astaxanthin's antioxidant activity has been the subject of a large body of research. Researchers have also looked at astaxanthin and the cells of the eye, including in the context of our increasing screen time and of ageing.
Most of us now spend hours a day looking at screens, and optometrists have described how prolonged use of digital devices affects the eyes of both children and adults. This is one reason carotenoids like Astaxanthin have attracted so much interest.
You may also enjoy reading 'Tips for better eye health'.
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