vitamin d and breast cancer

Dietary intake of vitamin d and calcium and breast cancer risk in the European prospective investigation into cancer and nutrition. Dr. Garland also suggested, “Doctors should measure vitamin D levels in their breast cancer patients. Engel P, Fagherazzi G, Mesrine S, Boutron-Ruault MC, Clavel-Chapelon F. Joint effects of dietary vitamin D and sun exposure on breast cancer risk: results from the French E3N cohort. Taking 1 to 3 teaspoons of cod liver oil per day as a supplement can also help fulfill your vitamin D requirements. Breast cancer cells have vitamin D receptors, and when these receptors are activated by vitamin D, it triggers a series of molecular changes that can … Learn about the strengths and weaknesses of different types of studies. Ann Intern Med. Smaller amounts of vitamin D are in fortified milk and other foods, fatty fish, and eggs. METHODS: We studied the relationships between serum vitamin D, DNA methylation, and breast cancer using a case-cohort sample (1070 cases, 1277 in subcohort) of non … 31 Moreover, low vitamin D levels were common at breast cancer diagnosis and were associated with a poor prognosis; about 94% women with vitamin D level less than 20 ng/mL develop metastases and 73% die of the advanced disease. If your level was low and you've been taking a supplement to get back into the normal range, have your vitamin D level checked a few months later and adjust your supplement dose accordingly. Also known as: Vitamin D3, cholecalciferol, vitamin D2, ergocalciferol. Join our online community to connect, share, and find peer support. Kuper H, Yang L, Sandin S, Lof M, Adami HO, Weiderpass E. Prospective study of solar exposure, dietary vitamin D intake, and risk of breast cancer among middle-aged women. Kim Y, Je Y. Vitamin D intake, blood 25(OH)D levels, and breast cancer risk or mortality: a meta-analysis. Breast Cancer Res Treat. Serum 25-hydroxyvitamin D concentrations and postmenopausal breast cancer risk: a nested case control study in the Cancer Prevention Study-II Nutrition Cohort. The positive relationship could suggest vitamin D deficiency is a risk factor for breast cancer, especially in women with a higher body mass index. none, Pre- and postmenopausal women:0.95(0.75-1.21)§, Women’s Lifestyle and Health Cohort Study [12], Pre- and postmenopausal women:0.9(0.8-1.1), Sun exposure:2 or moresunburns per yearvs. Vitamin D is just one part of that equation.But, the study out of U.C. ‡ All women in the study have a sister who has been diagnosed with breast cancer. Chlebowski RT(1). Give for Metastatic Breast Cancer Research, Susan G. Komen A deficiency in vitamin D is associated with tumor progression and metastasis in breast cancer, suggests a new study. Cancer Epidemiol Biomarkers Prev. 8(7):e69269, 2013. Patients planned for surgical therapy of their breast cancer or initiation of systemic chemotherapy, that would not allow for at least 7 days of vitamin D intervention Higher blood 25(OH)D level may reduce the breast cancer risk: evidence from a Chinese population based case-control study and meta-analysis of the observational studies. (As vitamin D does not have toxicity to the fetus, a negative pregnancy test is not a requirement to participate in the study.) 175(7):673-84, 2012. The ozone layer protects the Earth from UV rays. Nutr Cancer. While sun exposure offers vitamin D benefits, it does have risks. || Average number of years between blood collection and breast cancer diagnosis in cases. The vitamin D receptor (VDR) is expressed in mammary epithelial cells, suggesting that vitamin D may directly influence sensitivity of the gland to transformation. Vitamin D may play a role in controlling normal breast cell growth and may be able to stop breast cancer cells from growing. Vitamin D also helps the immune, muscle, and nervous systems function properly. Cancer Epidemiol Biomarkers Prev. EIN 75-1835298. … The current recommendation is that all people get 600 international units (I.U.) According to in vitro studies on breast cancer cells, the active form of vitamin D suppresses aromatase expression, resulting in lower production of estrogen. A large body of epidemiology research had suggested that people with higher blood levels of vitamin D have a lower risk of cancer, said Barry Kramer, M.D., director of NCI’s Division of Cancer Prevention. Animal studies have consistently shown a correlation between low Vitamin D and breast cancer, but this has been harder to prove in humans -- until now. These studies did not look directly at vitamin D levels in the blood, but instead had women report their use of vitamin D supplements. Breast cancer (BC) is the most prevalent malignancy among US women .Vitamin D is a steroid hormone known to influence multiple organ functions in our body, including the heart, the skeletal system, the lungs, the intestines and the mammary glands. Still, most people don't like the taste of cod liver oil, so you may want to try these other fortified foods (though they have lower levels of vitamin D): Think Pink, Live Green: A Step-by-Step Guide to Reducing Your Risk of Breast Cancer teaches you the biology of breast development and how modern life affects breast cancer risk. 13(3):R50, 2011. Also, taking vitamin D-rich cod liver oil between ages 10 to 19 reduced breast cancer risk by about 35%, and consuming at least nine glasses of milk every week between the ages of … METHODS: We studied the relationships between serum vitamin D, DNA methylation, and breast cancer using a case-cohort sample (1070 cases, 1277 in subcohort) of non-Hispanic white women. Learn more about our commitment to your privacy. Vitamin D helps the body absorb calcium, which is essential for good bone health. Taking too much vitamin D occasionally can cause you to have too much calcium in your blood. Int J Cancer. Breast Cancer Res Treat. Findings also showed other measures of sun exposure were not related to breast cancer risk including sunburns during other ages, weeks per year spent on sunbathing vacations and tanning bed use. Recently, extensive research on its extraskeletal actions has linked vitamin D deficiency to an increased risk of infection, diabetes mellitus types 1 and 2, cardiovascular disease, obesity, asthma, inflammatory bowel disease, colon, breast, prostate and ovarian cancer and some neurological diseases. ¶ Sunburns from ages 10-19. Vitamin D slows down the rate of cell division, which reduces the likelihood that cancerous mutations will emerge. 23 Jan 2020 --- Pakistani women with a vitamin D deficiency (VDD) have a higher risk of breast cancer, while women with a history of vitamin D supplementation are less at risk. As early as the 1980's, studies began looking at the link between Vitamin D and various types of cancer, including breast cancer. Objectives: In our systematic review and meta-analysis, we evaluated evidence linking serum 25(OH)D (both in serum and diet) with breast cancer (BC) occurrence. Most of the vitamin D a person gets comes from the sun and a small amount comes from diet. The biologically most active vitamin D metabolite 1α,25-dihydroxyvitamin D 3 (1,25(OH) 2 D 3) is a high affinity ligand of the transcription factor vitamin D receptor (VDR). Findings from studies on a possible link between blood levels of vitamin D and breast cancer risk are mixed. And, because so many foods that contain vitamin D also contain calcium, it’s hard to single out the effects of vitamin D alone. Dr. Holick: Everyone knows vitamin D as the vitamin important for bone health and for preventing rickets in children, but we are now recognizing that the major source of vitamin D is coming from the sun, so by definition vitamin D is really a hormone. Cancer Res. 380(1):33-44, 2019. Dairy, calcium, and vitamin D intake and postmenopausal breast cancer risk in the Cancer Prevention Study II Nutrition Cohort. A low vitamin D status is associated with an increased risk of various cancers, such as of colon, breast, prostate and hematological cells. Christensen cautioned though that vitamin D isn’t the only factor that can influence the development of breast cancer.Like all cancers, breast cancer is caused by a multitude of issues. In 2016, a landmark study published in PLOS ONE found that women over 55 with blood concentrations of vitamin D higher than 40ng/ml, had a 67% lower risk of cancer compared women with levels lower than 20ng/ml. Vitamin D influences the expression of breast cancer-related gene activity, including cell differentiation, cell growth, and angiogenesis, all of which are related to cancer development and progression. Despite these consistent data, the exact mechanism of breast cancer prevention by vitamin D has yet to be discerned. Vitamin D with or without calcium supplementation for prevention of cancer and fractures: an updated meta-analysis for the U.S. Preventive Services Task Force. Vitamin D for cancer prevention and healing. We have previously shown a U-shaped association between pre-diagnostic serum levels of vitamin D and risk of breast cancer-related death, with poor survival in patients with the lowest and the highest levels respectively, as compared to the intermediate group. The typical multivitamin contains 400 international units of vitamin D. It's important to choose your fish carefully to avoid any species that may have high levels of mercury. Freedman DM, Chang SC, Falk RT, et al. It’s hard to measure sunlight exposure. Supplements: Before you adjust your vitamin D intake, it's important to know your vitamin D serum level. 2017 Jul 6;125(7):077004. pmid:28728134 . Br J Cancer. Cauley JA, Chlebowski RT, Wactawski-Wende J, et al. Breast Cancer Res. 94(17):1301-11, 2002. 11(4):R64, 2009. Vitamin D is crucial to our health, and now, new research has found a 'marked' association between blood levels of this vitamin and breast cancer risk. Most vitamin D is made when an inactive form of the nutrient is activated in your skin when it's exposed to sunlight. Relative risk below 1 indicates decreased risk. Plasma 25-hydroxyvitamin D and the risk of breast cancer in the European prospective investigation into cancer and nutrition: A nested case-control study. There are some studies on vitamin D supplementation and breast cancer recurrence. Calcium plus vitamin D supplementation and health outcomes five years after active intervention ended: the Women’s Health Initiative. § Average number of sunburns per year. J Womens Health (Larchmt). 19(9):2341-50, 2010. Get some sunshine and take a vitamin D supplement, then have your level retested in about 3 months to make sure you are taking the right dose. Vitamin D is found in some foods, especially fatty fish, milk, and fortified cereals. Vitamin D supplementation and breast cancer prevention: a systematic review and meta-analysis of randomized clinical trials. Dr. Holick: There was a recent study that came out, known as the VITAL study. Almquist M, Bondeson AG, Bondeson L, Malm J, Manjer J. Serum levels of vitamin D, PTH and calcium and breast cancer risk-a prospective nested case-control study. Arch Intern Med. According to the World Health Organization (WHO), the diagnosis of breast cancer is growing in the developing world, due to increased life expectancy, increased urbanization and adoption of western lifestyles.1 A new study suggests higher vitamin D levels are associated with lower risk of breast cancer progression and mortality.2 1-877-465-66361-877 GO KOMEN, For breast health or breast cancer information, please call the Breast Care Helpline: 1-877-465-6636 or helpline@komen.org, For clinical trial information, please call the Clinical Trial Information Helpline: 1-877-465-6636 or clinicaltrialinfo@komen.org, © 2021 Susan G. Komen is a 501(c)(3) non-profit organization. 76(18):5423-30, 2016. Circulating levels of 25-hydroxyvitamin D and risk of breast cancer: a nested case-control study. UV rays are invisible, so you can't tell if you're exposed or not. 111(3-5):195-9, 2008. Environ Health Perspect. Hossain S(1), Beydoun MA(2), Beydoun HA(3), Chen X(4), Zonderman AB(5), Wood RJ(6). 155(12):827-38, 2011. ** Among women with blood collection during the winter, results were similar, relative risk of 1.10 (0.75-1.60). Vitamin D … Vitamin D is also obtained by exposure to sunlight. Dallas, TX 75380, helpline@komen.org If it is below 60, your risk of breast cancer is increased. Vitamin D and breast cancer: interpreting current evidence. Vitamin D is a fat soluble vitamin that plays a role in calcium and phosphorus homeostasis. For our primary analysis, we used robust linear regression to examine the association between serum 25-hydroxyvitamin D (25(OH)D) and methylation within a random sample of the cohort … Still, research results on vitamin D and breast cancer have been mixed, possibly because the studies have been small. Cancer Epidemiol Biomarkers Prev. Introduction: Whether or not vitamin D may lower the risk of breast cancer is under study. Relative Risk of Breast Cancerin Women with Higher Blood Levelsof Vitamin D (25-hydroxyvitamin D)Compared to Women with Lower Levels,RR (95% CI), New York University Women’s Health Study and Northern Sweden Mammary Screening Cohort [18], Pre- and postmenopausal women:0.87(0.67-1.13)**, Pre- and postmenopausal women:1.07(0.85-1.36), Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial [22], Pre- and postmenopausal women:0.93(0.66-1.33), Pre- and postmenopausal women:0.73(0.55-0.96), Melbourne Collaborative Cohort Study [25], Pre- and postmenopausal women:0.95(0.79-1.15), Pre- and postmenopausal women:1.29(0.92-1.81), Pre- and postmenopausal women:0.92(0.83-1.02), 10 nested case-control studies and1 retrospective study, Pre- and postmenopausal women:0.86(0.75-1.00), Pre- and postmenopausal women:0.87(0.77-0.99), Pre- and postmenopausal women:0.99(0.97-1.01). Cancer Epidemiol Biomarkers Prev. 182(1):1-8, 2020. 133(7):1689-700, 2013. Breast cancer is the most common form of cancer in women, regardless of ethnicity or race. Sperati F, Vici P, Maugeri-Saccà M, et al. Table note: Relative risk above 1 indicates increased risk. But the thickness of the ozone layer changes with the seasons and the weather, so some UV rays get through to the Earth. 125(7):077004, 2017. Serum levels of vitamin D metabolites and breast cancer risk in the prostate, lung, colorectal, and ovarian cancer screening trial. Vitamin D has been shown to reduce cancer development and progression in a number of ways. Serum Vitamin D and Risk of Breast Cancer within Five Years. Vitamin D may increase survival for breast cancer patients Breast cancer is the most common form of cancer in women, regardless of ethnicity or race. However, to get the most out of the tables, it’s important to understand some key concepts. Int J Cancer. The biologically most active vitamin D metabolite 1α,25-dihydroxyvitamin D 3 (1,25(OH) 2 D 3) is a high affinity ligand of the transcription factor vitamin D receptor (VDR). By studying blood levels of vitamin D, researchers avoid the measurement issues with sunlight exposure and diet. Colon Cancer Chart: > 40ng is good . for the Women’s Health Initiative Investigators. In general, most experts recommend you continue to use sun protection when ultraviolet (UV) radiation levels are moderate or high. PLoS One. Manson JE, Cook NR, Lee IM, et al. The influence of health and lifestyle characteristics on the relation of serum 25-hydroxyvitamin D with risk of colorectal and breast cancer in postmenopausal women. Breast cancer is the most prevalent cancer in women globally. 28(5):900-908, 2019. Chen P, Hu P, Xie D, Qin Y, Wang F, Wang H. Meta-analysis of vitamin D, calcium and the prevention of breast cancer. Cancer Network: Have there been randomized trials with vitamin D that focused on cancer prevention or slowing cancer progression? 18(7):775-82, 2007. Therefore, some information may be out of date. none, Pre- and postmenopausal women:1.1(0.9-1.4)¶, Pre- and postmenopausal women:0.91(0.83-1.00), Pre- and postmenopausal women:0.95(0.88-1.01), Pre- and postmenopausal women:1.04(0.85-1.29), Pre- and postmenopausal women:0.98(0.93-1.03). Circulating 25-hydroxyvitamin D concentration and risk of breast, prostate, and colorectal cancers: the Melbourne Collaborative Cohort Study. Cancer Epidemiol Biomarkers Prev. McCullough ML, Rodriguez C, Diver WR, et al. Learn more about our commitment to providing complete, accurate, and private breast cancer information. The effect of vitamin D supplementation on the risk of breast cancer: a trial sequential meta-analysis. Low levels of vitamin D were recorded among patients with breast cancer compared with healthy controls. If you're going to take a vitamin D supplement, most experts recommend taking the D3 form of the vitamin, not the D2 form. Sunshine exposure: Even short periods of direct peak sun exposure -- 15 minutes 3 times a week, for example -- can give you more than the recommended daily amount of vitamin D. It's also impossible to overdose on vitamin D from the sun. For studies of blood levels of vitamin D: Prospective cohort studies and nested case-control studies with at least 500 breast cancer cases. Vitamin D supplements and prevention of cancer and cardiovascular disease. Author information: (1)Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, 11243 West Carson Street, Torrance, CA 90502, USA. Vitamin D influences breast cancer development and progression in important ways, but the relationship is not fully understood. Learn more about vitamin D and breast cancer risk. Kühn T, Kaaks R, Becker S, et al. Create a profile for better recommendations. Studying vitamin D with measures of sunlight exposure and diet has some challenges. Eating foods rich in vitamin D can help, but is less effective. To explore changes in cellular proliferation (atypia and Ki67) in response to one year of vitamin D or placebo supplementation in premenopausal women. Learn. Study selection criteria: For studies with measures of sunlight exposure and dietary intake of vitamin D: Randomized controlled trials, prospective cohort studies and nested case-control studies with at least 800 breast cancer cases, and meta-analyses. In the meantime, get your Vitamin D level checked. *Please note, the information provided within Komen Perspectives articles is only current as of the date of posting. Cancer Causes Control. This is done with a simple blood test that your doctor can order for you when you're in for a routine physical. Abbas S, Linseisen J, Rohrmann S, et al. We analyzed data from the first National Health and Nutrition Examination Survey Epidemiologic Follow-up Study to test the hypothesis that vitamin D from sunlight exposure, diet, and supplements reduces the risk of breast cancer. For example, A 2016 study found that women over 55 years who have vitamin D of 40 ng/mL or higher had a 67 percent lower risk for all types of cancer. Intakes of calcium and vitamin D and breast cancer risk in women. of vitamin D per day, no matter how old they are. Potential uses: Vitamin D helps the body absorb the calcium that is essential for good bone health. The present meta-analysis examines the effects of the 25(OH)D, 1,25(OH)2D and vitamin D intake on breast cancer … More recently, some research has found that calcium and vitamin D may help protect premenopausal women against breast cancer, but more studies are needed. Summary tables are a useful way to look at the science behind many breast cancer guidelines and recommendations. The authors concluded that 5 years on 2,000 IU’s of vitamin D per day that did not reduce the risk for developing colon cancer. Eliassen AH, Warner ET, Rosner B, et al. Eating foods rich in vitamin D can help, but is less effective. Vitamin D has been suggested to prevent and improve the prognosis of several cancers, including breast cancer. Vitamin D status and intakes are thought to be inversely associated with BC occurrence. Continued Vitamin D Deficiency Linked to Poor Breast Cancer Prognosis. Am J Epidemiol. 167(10):1050-9, 2007. Cancer Epidemiol Biomarkers Prev. † Breast cancer risk among women randomized to take a supplement containing vitamin D and calcium versus women randomized to a placebo for 7 years (with continued follow-up). Serum 25-hydroxyvitamin D deficiency and increased risk of breast cancer among Korean women: a case-control study. Introduction. BACKGROUND: Vitamin D has anticarcinogenic and immune-related properties and may protect against some diseases, including breast cancer. Among women with blood collection during the summer, those with higher blood levels of vitamin D had a lower risk of breast cancer compared to those with lower blood levels of vitamin D, relative risk 0.66 (0.46-0.94). The U.S. Environmental Protection Agency and the National Weather Service developed the UV Index, which indicates the strength of UV rays on a scale from 1 to 11+ based on zip code. 110(11):2772-84, 2014. Studies have shown that diet has had a role in lowering the risk of breast cancer. 18(9):2558-61, 2009. J Steroid Biochem Mol Biol. Vitamin D researchers recommend a serum level of 40-60 ng/ml (nanograms/milliliter). 127(9):2159-68, 2010. VitaminDSurvivor Blog Aug 2011. View Article PubMed/NCBI Google Scholar 18. Increased intake of vitamin D has been shown to help reduce the risk of breast cancer, meaning that the recommended daily amount will likely need to be revised upward. Vitamin D keeps breast cancer cells closer together and much more adherent preventing rapid growth thus allowing the body’s own inherent defense system to destroy the cancer cells. But a recent study indicates vitamin D—specifically, vitamin D3—can even help reduce the risk of breast cancer.. 32 The 25(OH)D levels are significantly higher in … Serum 25-hydroxyvitamin D and prevention of breast cancer: pooled analysis. Vitamin D and vitamin D receptor (VDR) Vitamin D and VDR are the two most important participants playing a key role in vitamin D endocrine system in the prevention of breast cancer. See how this risk factor compares with other risk factors for breast cancer. 121(2):469-77, 2010. This field is for validation purposes and should be left unchanged. However, according to a study published in the American Association for Cancer Research , when the Vitamin D level in the blood was doubled to 50 ng/ml, there was a 83% reduction in Breast Cancer! However, such studies can only highlight associations, not prove cause and effect, he added. Vitamin D and breast cancer: A systematic review and meta-analysis of observational studies. It’s true there may be some promising findings about vitamin D in some types of cancer, such as colorectal and breast cancers. 15(1):R15, 2013. Lin J, Manson JE, Lee IM, Cook NR, Buring JE, Zhang SM. Once you are on Vitamin D, don’t stop just because your level is improved. Edvardsen K, Veierød MB, Brustad M, Braaten T, Engelsen O, Lund E. Vitamin D-effective solar UV radiation, dietary vitamin D and breast cancer risk. Vitamin D deficiency is common in breast cancer patients and some evidence suggests that low vitamin D status enhances the risk for disease development or progression. A low vitamin D status is associated with an increased risk of various cancers, such as of colon, breast, prostate and hematological cells. Cancer Epidemiol Biomarkers Prev. Epidemiologic data have demonstrated that breast cancer incidence is inversely correlated with indices of vitamin D status, including ultraviolet exposure, which enhances epidermal vitamin D synthesis. Neuhouser ML, Manson JE, Millen A, et al. The fact is breast cancer affects 1 in 8 women. N Engl J Med. 2015 … For more information, visit the Exposure to Chemicals in Food page in this section. Eliassen AH, Spiegelman D, Hollis BW, Horst RL, Willett WC, Hankinson SE. 65(2):178-87, 2013. Vitamin D promotes maturation (differentiation) of newly formed cells, which reduces transformation to a cancerous state. Sunlight Exposure and Dietary Intake of Vitamin D, Relative Risk of Breast Cancerin Women with a High Exposureto Vitamin D Compared toWomen with Low Exposure,RR (95% CI), Sun exposure:High vs. lowlevel of sun exposurein place of residence, Cancer Prevention Study II Nutrition Cohort [6], Pre- and postmenopausal women:0.90(0.78-1.05), Sun exposure:High vs. low level of sun exposure in place of residence, Pre- and postmenopausal women:1.06(0.91-1.23), Pre- and postmenopausal women:1.07(0.87-1.32), Sun exposure:More than onesunburn per yearvs. And when it comes to preventing breast cancer, the evidence about vitamin D is crystal clear: Conventional medicine recommends that vitamin D levels of roughly 25-30 ng/ml are safe. Research suggests that women with low levels of vitamin D have a higher risk of breast cancer. 8(1):e49312, 2013. Low levels of vitamin D were recorded among patients with breast cancer compared with healthy controls. Zhou L, Chen B, Sheng L, Turner A. Blood levels of vitamin D are a good marker of vitamin D exposure. Vitamin D Supplementation for Breast Cancer Survivors. for the VITAL Research Group. Before you take any supplements, talk to your doctor about the risks and benefits of the product, as well as what a good vitamin D serum level is for you. Breast Cancer Res Treat. Robien K, Cutler GJ, Lazovich D. Vitamin D intake and breast cancer risk in postmenopausal women: the Iowa Women’s Health Study. 20(1):187-98, 2011. Vitamin D may play a role in controlling normal breast cell growth and may be able to stop breast cancer cells from growing. Serum 25(OH) vitamin D and risk of breast cancer: a nested case-control study from the French E3N cohort. Serum vitamin D and risk of breast cancer within five years. To explore correlations between change in breast cancer biomarkers (density, IGF1, atypia, and Ki67) with each other and with change in vitamin D levels. Park S, Lee DH, Jeon JY, Ryu J, Kim S, Kim JY, et al. 22(11):915-29, 2013. Vitamin D is a sunshine vitamin, which is involved in a variety of actions and also reduces the risk of many cancers [ … We identified 190 women with incident breast cancer from a cohort of 5009 white women who completed the dermatological examination and 24-h dietary … After 10 years, 83% of women with adequate levels were alive without signs of cancer … How Does Vitamin D Prevent Breast Cancer. The relationship between vitamin D and breast cancer is still controversial. As more and more people spend most of their time out of direct sunlight or wearing sunscreen when they are in the sun, vitamin D production from sun exposure is limited. Vitamin D Puts Brakes on Breast Cancer Vitamin D is found in some foods, especially milk and fortified cereals, and is made by the body after exposure to sunlight. Int J Cancer. Special Report: COVID-19’s Impact on Breast Cancer Care, Talking to Your Family and Friends About Breast Cancer, Fertility and Pregnancy Issues During and After Breast Cancer, Understanding Breast Cancer Risk and How to Lower It, Tamoxifen (Brand Names: Nolvadex, Soltamox), Exposure to Chemicals for Lawns and Gardens, Exposure to Chemicals When Food Is Grilled/Prepared, Common Fears With No Evidence: Antiperspirants and Bras, Think Pink, Live Green Booklet and Checklist, our commitment to providing complete, accurate, and private breast cancer information, the darker your skin color, the less vitamin D you produce, the farther you live from the equator, the less vitamin D you produce, fewer daylight hours mean you produce less vitamin D, some yogurt (read the label to see if it says "fortified with vitamin D"), some orange juice (read the label to see if it says "fortified with vitamin D"), some soy milk (read the label to see if it says "fortified with vitamin D").