5 “Aging” Symptoms That May Actually Be Signs Of Low Vitamin D3

Updated: September 22, 2026

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    In this article

      Written By Monica Straith

      About the Author

      Monica is AlgaeCal’s Content Marketing Coordinator. Monica was an elite athlete and represented Canada numerous times with the Canadian Women’s National Soccer Team. Monica now uses her background in athletics and health to write for AlgaeCal.

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      Here are 5 warning signs most women dismiss as menopause, stress, or simply getting older.§

      Feeling “old” lately?

      What if it isn’t your age?

      It turns out that up to 80% of menopausal women may be vitamin D deficient.1 And most have no idea.

      Why?

      Because low vitamin D doesn’t always look like a vitamin deficiency. It can show up in ways that are incredibly easy to blame on “just getting older.”

      So you may be noticing the warning signs right now…

      Without ever thinking to connect them to vitamin D3.

      In this short video, we reveal the 5 surprising signs your body may be running low.

      Click below to see what they are before you dismiss them as normal aging. Watch closely to find a hidden exclusive offer.

      § This content is for educational purposes only and is not intended as medical advice. Always consult your healthcare provider before making changes to your healthcare, diet, exercise, or supplement routine.

      Article Categories:

      Article Sources
      1. Mei Z, Hu H, Zou Y, Li D. The role of vitamin D in menopausal women's health. Front Physiol. 2023 Jun 12;14:1211896.

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      1. Rose Shefton

        September 26, 2026 , 9:57 am

        I experience fatigue, tiredness. I take AlgaeCal Plus so I thought I was getting a sufficient amount of vitamin D. Am I?

      2. Yoori AlgaeCal

        September 29, 2026 , 7:00 pm

        Thank you for reaching out to us, and I’m so sorry to hear you’ve been dealing with ongoing fatigue and tiredness. ❤️

        While the 1600 IU of Vitamin D in AlgaeCal Plus supports bone health, optimal Vitamin D levels are important for overall health—not just your bones. Some people may need additional Vitamin D to reach ideal levels.

        That’s where D3 Complete comes in! Each softgel provides 1000 IU, with a recommended dose of 1–4 daily based on your needs. The best way to determine the right amount is through a blood test. You can learn more HERE.

        Feel free to contact our Bone Health Consultants at 1-800-820-0184 (USA & Canada toll-free) or [email protected] for further support! 😊
        – Yoori

      3. Wendy Franklin

        September 26, 2026 , 10:35 am

        immunity

      4. Leslie K

        September 26, 2026 , 10:48 am

        I am taking AlgaeCal Plus which has vitamin D3. The dosage on this shows 800IU’s. In the video it cited 400IUs is a good amount. Why does AlgaeCal Plus have double the recommended dosage?
        Thanks…

      5. Yoori AlgaeCal

        September 29, 2026 , 7:17 pm

        Thanks for reaching out, Leslie! I understand the confusion and would be happy to clarify. 🙂

        The 400 IU mentioned in the video was the amount used as a comparison dose in the study discussed, rather than a recommendation that everyone should take exactly 400 IU of vitamin D3.

        Vitamin D3 requirements vary greatly from person to person depending on blood levels.AlgaeCal Plus provides 1,600 IU per full daily 4 capsules, and the best way to determine whether you need more — and how much — is to have a blood test done. You can learn more HERE.

        Hope this helps and feel free to give our Bone Health Consultants a call at 1-800-820-0184 (USA & Canada toll-free) for more information.
        – Yoori

      6. Dr. Viviane Carson

        September 26, 2026 , 11:01 am

        Thank you! How can I order this supplement?

      7. Yoori AlgaeCal

        September 29, 2026 , 7:18 pm

        Thank you for your interest, Dr. Viviane! 🙂 You can easily order our D3 Complete directly on our website HERE.

        If you prefer to order over the phone, our Bone Health Consultants would be happy to assist you at 1-800-820-0184 (USA & Canada toll-free). Please feel free to reach out if you have any questions!
        – Yoori

      8. Philis Gold

        September 26, 2026 , 12:26 pm

        How do I get the 10% off my first D3 order ?

      9. Yoori AlgaeCal

        September 29, 2026 , 7:20 pm

        Hi Philis! You can get 10% off your first D3 order by applying the promo code STRONGER10 at checkout on our website HERE.

        If you’d prefer to place your order over the phone, our Bone Health Consultants would be happy to help you apply the discount at 1-800-820-0184 (USA & Canada toll-free).:)
        – Yoori

      10. Claudette Rympel

        September 26, 2026 , 1:21 pm

        Pain arthritis all over my body please help

      11. Yoori AlgaeCal

        September 29, 2026 , 7:22 pm

        We are so sorry to hear you’re experiencing arthritis pain all over your body, Claudette – that must be difficult.

        Please feel free to reach out to our Bone Health Consultants 7 days a week at 1-800-820-0184 (USA & Canada toll-free) for personalized support. We’d love to learn more about your situation and offer our best suggestions!
        – Yoori

      12. Christine Klay

        September 26, 2026 , 1:53 pm

        That is why My Doctor always tells me, don’t stop taking Vitamin D3 at your Age!

        I will forward this to my Daughter, not 50 yet, but it might help her as well!

      13. Yoori AlgaeCal

        September 28, 2026 , 10:31 pm

        That is so thoughtful of you to pass this along to your daughter, Christine! Establishing good bone health habits early makes such a wonderful difference. 🙂

        If you or your daughter would like to learn more about our D3 Complete, feel free to visit our website HERE, or give ur Bone Health Consultants at 1-800-820-0184 (USA & Canada toll-free) – we are happy to help.
        – Yoori

      14. michelle Hammerl

        September 26, 2026 , 2:42 pm

        If I am already taking AlgaeCal Plus for my osteoporosis, do I still need to supplement with Vitamin D?

      15. Yoori AlgaeCal

        September 28, 2026 , 10:28 pm

        Good question, Michelle! While the 1600 IU of Vitamin D in AlgaeCal Plus supports bone health, optimal Vitamin D levels are important for overall health—not just your bones. Some people may need additional Vitamin D to reach ideal levels.

        That’s where D3 Complete comes in. Each softgel provides 1000 IU, with a recommended dose of 1–4 daily based on your needs. The best way to determine the right amount is through a blood test. You can learn more HERE.

        Feel free to contact our Bone Health Consultants at 1-800-820-0184 (USA & Canada toll-free) or [email protected] for further support! 😊
        – Yoori

      16. Pat

        September 26, 2026 , 5:03 pm

        Loved this podcast

      17. Yoori AlgaeCal

        September 28, 2026 , 10:24 pm

        Thank you so much for listening, Pat! 💙 We’re so glad you enjoyed the video!
        – Yoori

      18. Irene Hepp

        September 27, 2026 , 4:19 am

        Very interesting. I literally was going to talk to my Dr about how my bones have been aching. Now I know to ask about Vit D.

      19. Yoori AlgaeCal

        September 28, 2026 , 10:26 pm

        We are so glad to hear that you’ve found this video interesting, Irene! 🙂

        We’re sorry to hear that you’ve been experiencing bone aches. It’s great that you’re planning to speak with your doctor about it. We hope you’re able to get some answers and find some relief soon.

        If you have any questions, or if there’s anything we can do to assist you, please feel free to reach out to our Bone Health Consultants at 1-800-820-0184 (USA & Canada toll-free) or [email protected]—we’re always here to help!
        – Yoori

      20. Lynn

        September 27, 2026 , 10:42 am

        Question:
        If taking AlgaeCal (basic, no strontium) which already has 1000 IU Vit D, is the balance distrusted by not having A, K, and E in it? If adding AlgaeCal D3 Complete, what is the limit (or correction) to properly balance the combinations?

      21. Yoori AlgaeCal

        September 29, 2026 , 7:53 pm

        Thanks for your thoughtful question, Lynn! I’m happy to address this for you.

        Rest assured, AlgaeCal is formulated specifically to support bone health. The combination of 1000IU of vitamin D and the bone-essential minerals in AlgaeCal has been clinically supported to increase bone density.

        D3 Complete, on the other hand, was designed for those who are deficient in vitamin D, and need additional. It provides vitamin D3 together with vitamins A, E, and K, which have been carefully balanced to work synergistically together and provide additional health benefits.

        Together, these fat-soluble vitamins support a variety of important functions, including building stronger bones, protecting your cells from oxidative damage, supporting a healthy heart and brain, boosting the immune system, promoting healthy skin and eyes, and more.

        I hope this helps clarify the difference between the two products! Feel free to contact our Bone Health Consultants 7 days a week at 1-800-820-0184 (USA & Canada toll-free) or email [email protected] if you have any follow-up questions. 🙂
        – Yoori

      22. Cindy

        September 27, 2026 , 2:05 pm

        I appreciate the information, but I would really like it if you listed the 5 signs at the beginning instead of using it as motivation to keep listening.

      23. Yoori AlgaeCal

        September 29, 2026 , 7:37 pm

        Thank you for sharing that feedback, Cindy! I completely understand where you’re coming from, and I’ll be sure to pass this feedback along to our team.

        In the meantime, here are the 5 signs covered in the video for quick reference:
        1. Bone pain and muscle aches
        2. Muscle weakness
        3. Constant fatigue or low energy
        4. Mood changes or feeling down (especially in colder/darker months)
        5. Getting sick more often

        If you have any questions, please feel free to reach out to our Bone Health Consultants at 1-800-820-0184 (USA & Canada toll-free) – we are happy to help!
        – Yoori

      24. Deborah

        October 2, 2026 , 6:12 am

        I have all these symptoms!

      25. Yoori AlgaeCal

        October 5, 2026 , 9:06 pm

        I’m so sorry to hear that you’re experiencing these symptoms, Deborah. That must be difficult, but I hope you gained some value from our video!

        To help support your vitamin D levels and overall health, you’re welcome to place an order on our website HERE or over the phone with our Bone Health Consultants at 1-800-820-0184 (USA & Canada toll-free).

        Please feel free to reach out to us if you have any questions—we’re always happy to help! 🙂
        – Yoori

      26. Colleen Lukotch

        October 2, 2026 , 8:33 am

        What is the recommended level of d3 that we should be getting!

      27. Yoori AlgaeCal

        October 5, 2026 , 9:10 pm

        Great question, Colleen!

        There is ongoing debate among experts regarding what is truly optimal:

        – The Endocrine Society suggests to maintain levels above 30 ng/mL
        – Some researchers suggest maintaining levels between 40–60 ng/mL to achieve optimal overall health
        – Our Bone Health Expert, Lara Pizzorno, suggests maintaining levels between 60–80 ng/mL for bone health

        Ultimately, your optimal target will depend on your current health status and personal goals. We always recommend getting your 25-hydroxy vitamin D levels tested and speaking with your doctor or healthcare provider to determine what level is best for you!

        If you have any other questions, please don’t hesitate to reach out to our Bone Health Consultants at 1-877-707-9226 (USA & Canada toll-free) or email [email protected]—we’re always happy to help!
        – Yoori

      Written By Monica Straith

      About the Author

      Monica is AlgaeCal’s Content Marketing Coordinator. Monica was an elite athlete and represented Canada numerous times with the Canadian Women’s National Soccer Team. Monica now uses her background in athletics and health to write for AlgaeCal.

      This article features advice based on cutting-edge research from our industry experts to give you the best possible information to support your bone-building journey.

      Lara Pizzorno
      MSc, MA, LMT - Best-selling author of Healthy Bones Healthy You! and Your Bones; Editor of Longevity Medicine Review, and Senior Medical Editor for Integrative Medicine Advisors.,
      Dr. Liz Lipski
      PhD, CNS, FACN, IFMP, BCHN, LDN - Professor and Director of Academic Development, Nutrition programs in Clinical Nutrition at Maryland University of Integrative Health.,
      Dr. Emma Gasinski
      PT, DPT, RYT - Physical therapist and certified yoga teacher with a Doctorate in Physical Therapy from Rocky Mountain University of Health Professionals,
      Dr. Lawrence (Larry) A. May
      MD, FACP, Harvard Medical School Graduate, Physician, Author, Public Speaker - Doctor of Internal Medicine at Providence Cedars-Sinai Tarzana Medical Center and author of several articles and books, including the widely utilized and best selling medical textbook Primary Care Medicine,
      About Our Bone Health Alliance Team

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