I am a 65 year old woman with hormone imbalance problems that cause fatigue, lack of energy etc regularly. I bought astaxanthin and will now take 2 x 24 mg a day and see how I go. Thank you for your article. It's knowledgeable and gives one hope. But no good asking a doctor for advice on these things, none of the doctors in the UK have a clue about nutrition/diet/supplements/vitamins etc. We find out far more, quicker and free of charge online.
You're very welcome, Carmel!
Just a reminder, I can not recommend that 48 mg dose because I am not a doctor and there are no studies to support that dose in humans that I am aware of. I used that dose at my own risk. The study in the elderly used just 24 mg/day of Astaxanthin to very good effect, so that dose should be enough, but I did not see that study before I started my test, I saw it at the end of my test, otherwise I probably would have gone with the 24 mg dose.
In the first study they determined that the elderly participants were able to increase the distance they walked in 6 minutes which is similar to what I found myself. In thinking about it, it may have slightly improved my stability when walking because some days, prior to Astaxanthin, I felt a slight instability and after Astaxanthin, that was less noticeable, but that may be down to increased muscle strength?
Please keep us updated on your results after 5 weeks of Astaxanthin!
I forgot to mention in my reply, that I do not have fatigue so I can not comment on that aspect of Astaxanthin, but I did find an article that referenced a study suggesting that it is helpful in relieving daily mental and physical fatigue :
I also found this study suggesting benefit for fatigue :
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5872699/#:~:text=Several studies have tested the, and physical causes 
Here is a relevant study quote :
' Hongo et al., reported that astaxanthin reduced daily fatigue stemming from mental and physical causes .'
Do you think this would relieve the pain and discomfort associated with arthritis and joint pain and possibly plantar fasciitis?
Although Astaxanthin has recently shown benefit for arthritis due to its antioxidative stress and anti inflammatory activities, I do not believe it is a top tier remedy for arthritis and you are likely to find better remedies for that specific purpose.
I think the most effective remedy reported for arthritis on Earth Clinic is Borax, the laundry additive sold in the laundry detergent aisle in markets across the US.
I am a true believer in Borax because it has kept my arthritis in remission for way over a decade now, as in no arthritic pain. You should read EC's page on Borax, I think you will find it interesting! Here is a link to it :
Further, here is a link to EC's Arthritis page so you can see what remedies work best for arthritis :
Regarding your Plantar Fasciitis, you should also refer to PF remedies on EC which can be found here :
My personal experience is that a combination of remedies is usually the fastest approach for PF.
It's worth noting that astaxanthin thins the blood, so anyone who DOESN'T need or want that to happen should avoid it. I was taking only 4mgs/day when I developed vitreous hemorrhages -- bleeding -- in my eye. Basically 'bloody floaters'. Doc said anything that thins the blood will increase these types of floaters dramatically, so I stopped.
I started taking astaxanthin for eye issues which could lead to blindness. Apparently there is astaxanthin in krill oil supplements, but, I am allergic to shell fish.
Energy and Endurance
After reading about Astaxanthin, I decided to try it. I am a 72 year old woman w/o much energy - asthma due to allergies, some osteoarthritis in my knees and other joints, but nothing much else. The only prescription medication I am on is montelukast. I take several herbal/vitamin supplements. About a month ago I started taking 2 12MG doses of Astaxanthin, one in the early morning and one at lunch. After about a month, I can tell a marked increase in my energy level. I have not noticed any interference with any other medication and no worsening of asthma symptoms or my chronic cough. I cannot tell that it has made a big difference in my arthritis but has given me energy to exercise more in the house and by taking walks in our winter weather. I will keep taking this at this dosage and am very pleased with it.
Thank you for your feedback on Astaxanthin and I am glad that it gave you increased energy after just one month of use! Very good to know!
(San Diego Ca)
I experienced the same effect. I'm 77 yrs old and for me it worked overnight! I was quite amazed. I now take it daily and it really does still help with energy, not as much as it did in the beginning, but still it helps quite a bit. I'm glad you found it and wrote about it, so others in their 70's will know there is something that will help with energy, even at our advanced age.
Congratulations on your great results with Astaxanthin and thank you for giving your results with the use of Astaxanthin!