Vitamin D for Fibroids
Medical Disclaimer - The information provided is intended to inform and educate women with Fibroids only, it is not a substitute for the professional judgment of a healthcare professional in diagnosing and treating Fibroids.
Warning - Taking too many vitamin D supplements over a long period of time can cause too much calcium to build up in the body (hypercalcaemia). This can weaken the bones and damage the kidneys and the heart. NHS
Please consult your GP and request blood tests before making any changes to your diet.
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What Vitamin D can and can't do for fibroids
Evidence suggests it may support
✔️ Slowing or preventing fibroid growth in some women
✔️ Supporting normal hormone signalling
✔️ Addressing a common nutritional deficiency (especially in the UK)
What it does not reliably do
❌ Consistently shrink large fibroids
❌ Replace medical or surgical treatment
❌ Guarantee symptom improvement (e.g. bleeding or pain)
Vitamin D should be viewed as foundational, long-term nutritional support, not a standalone treatment.
Please read "The right Vitamin D for Fibroids" for more details on selecting the research, recommended dosage and why Vitamin is recommended.
Product comparison
The following products all contain Vitamin D3 at the recommended levels for vitamin D deficiency.
Description
A peppermint favoured spray containing vitamin D3 sustainably sourced from algae, and K2, a plant-derived nutrient that shifts calcium where you need it.
Description
Description
A one a day tablet that combines Vitamin D3 & K2 MK-7 to amplify absorbency.
Vitamin D FAQ's
Peer reviewed clinical studies proving a correlation between Vitamin D deficiency in women with Uterine Fibroids
🔗 Baird et al., American Journal of Epidemiology (2013)
🔗 Paffoni et al., Journal of Clinical Endocrinology & Metabolism (2013)
Findings
- Women with sufficient vitamin D levels were significantly less likely to have fibroids
- Low vitamin D levels predicted both presence and severity of fibroids
Strengths of studies
✔️ Statistically significant findings (1000+ participants)
✔️ Peer reviewed
Weaknesses of studies
❌ Observational only
❌ Cannot establish causation or prevention
Peer reviewed clinical studies showing that addressing Vitamin D deficiency prevented Uterine Fibroid growth
🔗 Ciavattini et al., Gynecological Endocrinology (2016)
🔗 Hajhashemi et al., Obstetrics & Gynecology Science (2019)
🔗 Arjeh et al., Clinical Nutrition ESPEN (2020)
Key findings:
- Women who corrected vitamin D deficiency showed no significant fibroid growth over 12 months
- Fibroids continued to grow in women who remained deficient
- Vitamin D supplementation was associated with reduced fibroid growth rate
- Some modest reductions in fibroid size were observed
Strengths of studies
✔️ Peer reviewed
Weaknesses of studies
❌ Statistically insignificant findings (Less than 100 participants)
❌ Does not prove fibroid shrinkage or symptom relief
❌ Evidence too limited to support treatment claims
Multiple studies have demonstrated that vitamin D deficient women with uterine fibroids who take oral vitamin D supplementation experience slowed fibroid growth. Though promising, these results are not conclusive. Always consult your doctor before adding a new supplement or vitamin to your diet.
Low vitamin D levels are associated with the presence of uterine fibroids, however, many other factors contribute to the development of uterine fibroids.
2,000-4,000 international units (IU) or 100ug of oral vitamin D per day, can help treat vitamin D deficiency, which may help inhibit fibroid growth. Always consult your doctor before adding a new supplement or vitamin to your diet.
There is no evidence to suggest there is a particular time of day that is more beneficial, but it is recommended to take Vitamin D supplements with a meal, ideally high in fat, for maximum absorption.
