Women’s Health

Relationship between Low Ultraviolet B Irradiance and Higher Breast Cancer Risk in 107 Countries

The Breast Journal

This study showed that there is an increased rate of breast cancer further from the equator where there is less sunlight exposure. According to multiple regression, UVB irradiance was inversely associated with incidence rates after controlling for covariates. They also found that increasing serum 25(OH)D above 22 ng ⁄ mL was associated with incrementally lower incidence rates of breast cancer.

Related Studies

Women’s Health

Maternal 25(OH)D concentrations >40 ng/mL associated with 60% lower preterm birth risk among general obstetrical patients at an urban medical center

PLOS ONE

This study found that maternal vitamin D concentrations greater than 40 ng/mL were associated with substantial reduction in pre-term birth risk in a large, diverse population of women. Women who had a serum concentration of 25(OH)D greater or equal to 40ng/mL had a 62% lower risk of preterm births.

Women’s Health

Maternal 25(OH)D concentrations >40 ng/mL associated with 60% lower preterm birth risk among general obstetrical patients at an urban medical center

PLOS ONE

This study found that maternal vitamin D concentrations greater than 40 ng/mL were associated with substantial reduction in pre-term birth risk in a large, diverse population of women. Women who had a serum concentration of 25(OH)D greater or equal to 40ng/mL had a 62% lower risk of preterm births.

Women’s Health

Serum 25 HydroxyVitamin D Concentrations and the Risk of Hip Fractures: The Women's Health Initiative

Annals of Internal Medicine

In this study which looked at data from the Women’s Health Initiative, a 10 ng/ml decrease in vitamin D was associated with a 33% increased risk of hip fracture in multivariable models. Women with the lowest vitamin D levels had 72% increased odds of experiencing a hip fracture in comparison to women with the highest vitamin D levels.

Women’s Health

Serum 25 HydroxyVitamin D Concentrations and the Risk of Hip Fractures: The Women's Health Initiative

Annals of Internal Medicine

In this study which looked at data from the Women’s Health Initiative, a 10 ng/ml decrease in vitamin D was associated with a 33% increased risk of hip fracture in multivariable models. Women with the lowest vitamin D levels had 72% increased odds of experiencing a hip fracture in comparison to women with the highest vitamin D levels.

Women’s Health

Relationship between Maternal Vitamin D Levels and Adverse Outcomes

Nutrients

This review article highlights the critical role of vitamin D in maternal health, fetal skeletal development, and the achievement of optimal pregnancy outcomes. The authors report that insufficient maternal vitamin D levels are associated with an increased risk of multiple adverse outcomes, including gestational diabetes mellitus, gestational hypertension, intrauterine growth restriction, miscarriage, stillbirth, and preterm birth. These effects are attributed to vitamin D’s involvement in key biological mechanisms, including the regulation of cytokine pathways, immune system function, endocrine activity, and placental function.

Women’s Health

Relationship between Maternal Vitamin D Levels and Adverse Outcomes

Nutrients

This review article highlights the critical role of vitamin D in maternal health, fetal skeletal development, and the achievement of optimal pregnancy outcomes. The authors report that insufficient maternal vitamin D levels are associated with an increased risk of multiple adverse outcomes, including gestational diabetes mellitus, gestational hypertension, intrauterine growth restriction, miscarriage, stillbirth, and preterm birth. These effects are attributed to vitamin D’s involvement in key biological mechanisms, including the regulation of cytokine pathways, immune system function, endocrine activity, and placental function.

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Solius is an FDA cleared over-the-counter (OTC) light panel intended to stimulate production of vitamin D in people 22 years and older.

Solius is clinically proven to stimulate the production of vitamin D. References to the benefits of sunlight, UVB light, and vitamin D are based upon published, peer-reviewed research. The Solius device is not intended to diagnose, treat, cure, or prevent disease, except for the indications for use described in the user manual for your applicable region. Solius does not provide specific medical advice to users. Users should seek advice from a qualified physician or healthcare provider. This website does not establish a doctor-patient relationship. For detailed product information please consult the User Manual prior to use. 

Solius® is a registered trademark of Solius Labs, Inc.
100 Ravine Lane NE, Suite 310, Bainbridge Island, WA 98110

© 2026 Solius Labs, Inc.

Get Started

Support

Partner

Be the first to get updates from Solius Labs

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Intertek logo

Solius is an FDA cleared over-the-counter (OTC) light panel intended to stimulate production of vitamin D in people 22 years and older.

Solius is clinically proven to stimulate the production of vitamin D. References to the benefits of sunlight, UVB light, and vitamin D are based upon published, peer-reviewed research. The Solius device is not intended to diagnose, treat, cure, or prevent disease, except for the indications for use described in the user manual for your applicable region. Solius does not provide specific medical advice to users. Users should seek advice from a qualified physician or healthcare provider. This website does not establish a doctor-patient relationship. For detailed product information please consult the User Manual prior to use. 

Solius® is a registered trademark of Solius Labs, Inc.
100 Ravine Lane NE, Suite 310, Bainbridge Island, WA 98110

© 2026 Solius Labs, Inc.

Get Started

Support

Partner

Be the first to get updates from Solius Labs

By signing up, I agree with the privacy policy.

Connect

Intertek logo

Solius is an FDA cleared over-the-counter (OTC) light panel intended to stimulate production of vitamin D in people 22 years and older.

Solius is clinically proven to stimulate the production of vitamin D. References to the benefits of sunlight, UVB light, and vitamin D are based upon published, peer-reviewed research. The Solius device is not intended to diagnose, treat, cure, or prevent disease, except for the indications for use described in the user manual for your applicable region. Solius does not provide specific medical advice to users. Users should seek advice from a qualified physician or healthcare provider. This website does not establish a doctor-patient relationship. For detailed product information please consult the User Manual prior to use. 

Solius® is a registered trademark of Solius Labs, Inc.
100 Ravine Lane NE, Suite 310, Bainbridge Island, WA 98110

© 2026 Solius Labs, Inc.