Astaxanthin: nature’s powerful antioxidant

In the marine food chain, astaxanthin passes from algae to fish and crustaceans, which provides their distinctive colourings and supports their health with antioxidant protection against cellular damage.

What is astaxanthin?

Astaxanthin is a naturally occurring red carotenoid pigment that gives salmon, trout, shrimp, and lobster their pink-red colour (1).

Its most concentrated natural source is the freshwater microalgae Haematococcus pluvialis, which produces astaxanthin when under environmental stress, turning from green to deep red (2). This microalgae is the main source used in supplements today.

In seafood, astaxanthin is often bound to protein and becomes visible when cooked, this is when the protein denatures and the red pigment is released.

Health benefits of astaxanthin

Potent antioxidant: Astaxanthin is known as one of nature’s strongest antioxidants. It helps neutralise free radicals, reduce inflammation, and protect cells from oxidative stress.

Studies suggest its activity has the potential to be more powerful than that of vitamin C, vitamin E, and CoQ10 (3), helping defend the body against premature ageing and cellular damage.

That said, all antioxidants work synergistically, meaning combinations of them can provide greater protection against oxidative damage than individual antioxidants working alone. This synergy works because antioxidants in different forms can regenerate each other. Therefore, it is important to incorporate as many antioxidants as you can into your routine.

Skin health: Astaxanthin can help promote a smooth, hydrated and resilient skin barrier. It does so by protecting against sun-induced damage and enhancing elasticity. It may also reduce the appearance of wrinkles and fine lines for a youthful complexion and even skin tone (4).

Eye health: The astaxanthin pigment helps protect the eyes from oxidative stress, it also reduces strain from staring at screens and supports vision in general. It is thought that regular intake may help maintain eye health long-term by protecting the retinal tissues from the damaging effects of blue light (5).

Brain and nerve protection: Because astaxanthin can cross the blood-brain barrier, it helps protect nerve cells from oxidative damage and neurodegenerative diseases such as Alzheimer's, Parkinson's, ALS, Huntington's, and multiple sclerosis (6). It is also thought that this antioxidant may support memory, concentration, and cognitive sharpness, particularly as part of healthy ageing (7).

Heart and circulation: Astaxanthin can support cardiovascular wellbeing by supporting healthy blood flow and protecting vessel walls from oxidative stress. It may also help maintain balanced cholesterol and blood pressure levels (8) (9).

Immune support: Its antioxidant and anti-inflammatory properties contribute to the functioning of a responsive immune system. This is because astaxanthin helps protect immune cells and it may also strengthen the body’s natural defences (10).

Bone and joint health: Research suggests astaxanthin may ease inflammation and discomfort in the joints while supporting bone strength and density (11).

Athletic endurance: Astaxanthin is used by athletes for its ability to help reduce fatigue and speed recovery. It may improve stamina and overall physical performance by minimising oxidative stress caused by intense exercise (12).

Safety and precautions for astaxanthin use

Astaxanthin is generally regarded as safe and well tolerated. No significant side effects have been reported, though its safety during pregnancy or breastfeeding has not been fully established. Anyone considering supplements should consult a healthcare professional, particularly if taking medication or managing a health condition.

How to take astaxanthin

Astaxanthin is available as capsules or softgels, and the ideal dose can vary depending on individual needs. Always follow product guidance or seek professional advice before beginning supplementation.

Food sources of astaxanthin

Astaxanthin is found in various seafood, including wild sockeye salmon, rainbow trout, coho salmon, and Atlantic salmon, as well as shrimp, crayfish, lobster, and crab. It is also a primary component in algae and is present in krill.

Takeaways

Astaxanthin is a powerful natural antioxidant that helps protect the skin, eyes, heart, and brain while supporting the musculoskeletal system, energy and endurance. Plus, it offers a simple and effective way to strengthen the body’s natural defences.

Recommended products

Terranova Astaxanthin 4 mg Complex: Plant-based antioxidant support from Haematococcus pluvialis.

Viridian Astaxanthin (30 Capsules): A natural microalgae extract.

Terranova Bilberry, Lutein & Astaxanthin Complex: Eye-focused blend combining antioxidants for optimal eye health.