Can Vitamin D Cure Disease? Find Out Tomorrow!

Published on November 3, 2025

Join Us Tomorrow for Our First Vitamin D Study Hour – Vitamin D Treatment for Psoriasis and Other Diseases

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Dr. Renu Mahtani — Practitioner of Dr. Cicero Coimbra’s Protocol; Expert in Autoimmune Health, Nutritional Medicine, and Vitamin D Therapy

We are honored to welcome Dr. Renu Mahtani, a consulting physician specializing in the Coimbra Protocol, autoimmune diseases, and pain management, to our first Vitamin D Study Hour webinar with Q&A – scheduled for tomorrow, Wednesday November 5 at 2pm ET/11am PT.

Registration Closed – Watch the Recording Here

“Vitamin D is not an optional supplement. It is a non-negotiable cellular necessity. It is your life health support system.” ~ Dr. Renu Mahtani

Based in Pune, India, Dr. Mahtani combines her background in Internal Medicine with advanced training in Metabolic and Nutritional Medicine from the American Academy of Anti-Aging Medicine. As a Board-Certified Physician in Anti-Aging and Regenerative Medicine and an Associate at Dr. C.G. Coimbra’s Institute for Autoimmune Disease Research in Brazil, she brings a unique, integrative approach to healing, with vitamin D as a central focus with her treatments along with her own personal experience with psoriasis.

Her recent publications highlight the therapeutic role of vitamin D in managing autoimmune conditions such as psoriasis, musculoskeletal pain, and chronic inflammation. In addition to her clinical work, Dr. Mahtani is an author, educator, and international trainer for physicians across Asia. She is also known for her holistic focus on nutritional optimization, gut health, and breath therapy.

Learn why Dr. Mahtani calls Vitamin D “Vitamin Divine.” Join us for an inspiring discussion with Dr. Mahtani as she shares highlights from her recent study on vitamin D and psoriasis, as well as her clinical insights on how vitamin D and other lifestyle-based interventions can transform autoimmune care and overall wellness.  Learn more about Dr. Mahtani here.

“If you do not supplement today, you will be needing medicines tomorrow. Vitamin D mechanisms are too many – it is a very intelligent molecule, the pathways it works upon are so many that a single pharmaceutical agent cannot do so many functions.” ~ Dr. Renu Mahtani

Registration Closed – Watch the Recording Here

 

Do Your Homework!

Get a basic understanding about vitamin D, vitamin D resistance, the role of vitamin D as a therapy for certain diseases, psoriasis case studies, and more. We encourage you to “Do Your Homework!”

1. Read Dr. Mahtani’s recent paper on vitamin D treatment for psoriasis, the focus of tomorrow’s discussion: Prolonged high dose daily oral vitamin D3 in the management of psoriasis: A retrospective chart analysis
2. Watch her video presentation Vitamin D: A cellular necessity to prevent diseases & medicines

Other doctors, such as Dr. Patrick McCullough, have witnessed the therapeutic value of vitamin D in practice for psoriasis and other diseases. Here is some bonus homework:

1. Read the following blog and its featured publication by Dr. McCullough, a medical doctor utilizing therapeutic, high-dose vitamin D in daily practice
2. Check out these video clips by Dr. McCullough

Submit your questions ahead of time for this or any one of our upcoming Vitamin D Study Hour webinars here:  https://www.grassrootshealth.net/submit-question-vitamin-d-scientists-medical-doctors/

NOTE: There are differences between therapeutic uses of vitamin D and what is required for normal physiology. Please be sure to consult with a knowledgeable physician when considering using therapeutic doses of vitamin D.

“Do not hesitate in starting at least the physiological dose of vitamin D, as it can bring many positive changes. Vitamin D replacement is our duty as doctors and avoiding is negligence. It is common-sense-pathy!” ~Dr. Renu Mahtani

Webinar Details, Q&A Submission & Sign-Up

Tomorrow! A new study by Dr. Renu Mahtani et al. demonstrates the therapeutic uses of vitamin D for psoriasis, showing how correcting deficiency can lead to remarkable improvements.

On Wednesday 11/5 at 11am PT, GrassrootsHealth will be hosting their first “Vitamin D Study Hour” focusing on this latest study and its findings, with the lead author Dr. Renu Mahtani.

REGISTER HERE

Vitamin D Study Hours will be held Wednesdays at 11am PT/2pm ET with a 15-20 minute review/presentation by the featured scientist, followed by questions and answers.  The expected time for each session is 30-40 minutes.

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Donate Today

💛 Help Us Continue to Make a Global Impact! GrassrootsHealth is a nonprofit public health organization dedicated to promoting optimal health worldwide, with a primary focus on the role of vitamin D. Since 2007, we have teamed up with the world’s leading vitamin D researchers and experts to educate about vitamin D and to move vitamin D research into practice. Through evidence-based education, resources, tools, and our citizen-science approach to research (the D*action project), we empower individuals and practitioners alike to make informed and actionable decisions about their health and the health of their patients.

Donate Here

Thank you for supporting our mission and our ongoing commitment to vitamin D research, education, and advocacy!

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Measure Your Vitamin D and Other Important Nutrients

If you haven’t had your vitamin D levels checked recently, now is the time! With so many Americans still falling short, awareness is the first step toward change.

Measuring and calculating a supplementation amount to help reach and maintain a target level, or taking loading doses to correct deficiency faster, could possibly make all the difference in overall health, wellbeing, and how a current disease situation progresses. Test your level now!

Create your custom home blood spot kit by adding any of the following measurements, along with your vitamin D:

• Omega-3 Index (with or without Ratios AA:EPA and Omega-6:Omega-3)
• Magnesium (with additional Elements copper, zinc, selenium, mercury, and cadmium)
• hsCRP as a marker of inflammation and HbA1c as a marker of blood sugar health

Having and maintaining healthy vitamin D levels and other nutrient levels can help improve your health, now and for the future. Enroll and test your levels today, learn what steps to take to improve your status of vitamin D (see below) and other nutrients and blood markers, and take action! By enrolling in the GrassrootsHealth projects, you are not only contributing valuable information to everyone, you are also gaining knowledge about how you could improve your own health through measuring and tracking your nutrient status, and educating yourself on how to improve it.