Includes direct link to the referenced study (first reference after the post).
My conjecture is that MANY anti-oxidant supplements, in particular, will be helpful to those with endometriosis -- as they are for a variety of other diseases and conditions (based on my decades of reading about and direct experience with supplements; I am not a doctor. At the very least, it's worth doing your own research on the topic).
https://www.lifeextension.com/newsletter/2026/3/vitamins-for-painful-endometriosis-symptoms
Findings from a systematic review of clinical trials support a beneficial effect for vitamins D, C and E against symptoms associated with endometriosis, a common disease of reproductive-aged women that causes chronic pelvic pain, painful menstrual periods, infertility, pain during sex and reduced quality of life. The condition is characterized by the presence of endometrial-like tissue growing outside of the endometrium, which lines the uterus. Authors Sophia Tsokkou and colleagues concluded that consuming the vitamins "represents a safe, low-cost adjunct therapy that can effectively mitigate endometriosis-related oxidative stress and pelvic pain."
High-dose vitamin D was associated with a reduction in pelvic pain, lower high-sensitivity C-reactive protein (hs-CRP, a marker of inflammation) and greater total antioxidant capacity. The combination of antioxidant vitamins C and E significantly lowered markers of oxidative stress, decreased daily pelvic pain and reduced menstrual pain.
The systematic review included seven randomized, controlled trials that included a total of 343 women with endometriosis. Vitamin D doses used in the trials included 50,000 IU once per week, 50,000 IU every two weeks or 2,000 IU daily. Vitamin C doses ranged from 343 mg to 1000 mg and vitamin E doses ranged from 38 to 804 mg per day.
"By targeting inflammatory and oxidative pathways that are central to endometriosis pathogenesis, these vitamins offer a mechanistically coherent, low-toxicity strategy to complement standard hormonal or surgical treatments," Tsokkou and her associates wrote. The findings were reported in the February 1, 2026, issue of the International Journal of Molecular Science.1
Endometriosis is a condition in which tissue that normally exists in the lining of the uterus grows outside of the organ, leading to pain and infertility. Symptoms affect activities of daily living, personal relationships and work productivity.2 Endometriosis is known to have hormonal, immunological, toxicological (dioxin, DES, pesticides) and epigenetic causes.3
Conventional treatment includes pain-relieving drugs, synthetic or bioidentical hormonal treatments and surgery to remove the growths.4
High adherence to eating patterns such as the MIND (Mediterranean-DASH Intervention for Neurodegenerative Delay) diet has been associated with an 82% lower risk of endometriosis compared with average adherence.5 The MIND diet combines Mediterranean and DASH diets. A Mediterranean diet is characterized by a high intake of plant foods (vegetables, fruit, nuts and cereals) and olive oil; a moderate intake of poultry and fish; and low intake of dairy products (mainly yogurt and cheese), red and processed meats, and sweets.6 The DASH diet emphasizes vegetables, fruit, whole grains, and includes low-fat or fat-free dairy products, poultry, fish, beans, and nuts, while limiting saturated fat, topical oils, sodium, and sugar-sweetened foods and beverages.7
N-acetyl cysteine (NAC) may be of help to women with endometriosis, according to a recent randomized clinical trial. Fifty women with four or fewer uterine fibroids were enrolled, and treatment with 600 mg NAC/day for three months reduced total fibroid volume by 25% versus a volume reduction of only 1% in the placebo group.8
References
1 Tsokkou S, Matsas A, Konstantinidis I, et al. Therapeutic effects of vitamins in endometriosis patients: a systematic review of randomized controlled trials. Int J Mol Sci. 2026 Feb 2;27(3):1476. doi: 10.3390/ijms27031476.
2 de Carvalho França PR, Lontra ACP, Fernandes PD. Endometriosis: a disease with few direct treatment options. Molecules. 2022 Jun 23;27(13):4034. doi: 10.3390/molecules27134034.
3 Endo Myths (1980) vs Endo Facts (2018). Endometriosis Association. https://endometriosisassn.org/ Accessed 2026 Feb 19.
4 Treatments for Endometriosis. Endometriosis Association. https://endometriosisassn.org/about-endometriosis/treatments/ Accessed 2026 Feb 19.
5 Noormohammadi M, Ghoreishy SM, Ghasemisedaghat S, et al. Association between MIND diet its components with endometriosis risk: secondary results from a case-control study. Sci Rep. 2025 Jun 1;15:19201. doi: 10.1038/s41598-025-04593-1
6 Fostering healthier and more sustainable diets – learning from the Mediterranean and New Nordic experience. World Health Organization. 2018 May 7. https://www.who.int/europe/news/item/07-05-2018-fostering-healthier-and-more-sustainable-diets-learning-from-the-mediterranean-and-new-nordic-experience Accessed 2026 Feb 19.
7 DASH Eating Plan. National Heart, Lung and Blood Institute. National Institutes of Health. 2025 Jan 10. https://www.nhlbi.nih.gov/education/dash-eating-plan Accessed 2026 Feb 19.
8 S. Aghaamoo, A. Zandbina, E. Saffarieh and S. Nassiri. The effect of N-acetyl cysteine on the volume of uterine leiomyoma: A randomized clinical trial. Int J Gynaecol Obstet 2021 Vol. 154 Issue 3 Pages 521-525. doi: 10.1002/ijgo.13611
Every woman….Every woman will benefit from 25mg of iodine. So if are one or have any in your immediate circle, look into this please. This applies to men as well but 50mg is the recommendation.
With regard to low D3 levels…. Grain, especially wheat is the issue,
Eating a single egg a day helps women immensely. If cooked in animal fat it also increases the benefits