Vitamin D Deficiency in Women: Causes, Symptoms & How to Get Enough

Women may be particularly susceptible to vitamin D deficiency due to a complex interplay of hormonal changes, physiological factors and lifestyle choices, according to insights from clinical pharmacist Natalie Su at MedStar Georgetown University Hospital.

Hormonal Roles and Shifts

Fluctuations in hormones, specifically estrogen, play a significant role. Estrogen is crucial for activating vitamin D within the body. As estrogen levels decline during and after menopause, the body’s ability to utilize vitamin D diminishes, potentially impacting calcium absorption and increasing the risk of osteoporosis.

The need for vitamin D may also increase for women during pregnancy and breastfeeding to support both maternal health and the developing skeletal system of the fetus.

Did You Know? Women generally have a higher percentage of body fat compared to men, and vitamin D, being a fat-soluble vitamin, can be stored in adipose tissue, potentially reducing its availability in the bloodstream.

Physical Factors and Lifestyle

Women typically have a higher percentage of body fat than men. Because vitamin D is a fat-soluble vitamin, storing it in fatty tissues may reduce the amount available in the blood.

Lifestyle factors also contribute to potential deficiencies. Spending more time indoors, frequent use of sunscreen, and wearing clothing that limits sun exposure – the primary source of vitamin D production in the skin – can all increase the risk of deficiency.

Should You Be Tested?

Vitamin D analysis is not routinely included in standard checkups. However, Su recommends women discuss testing with their doctor, given the increased susceptibility to deficiency.

Expert Insight: The interplay between hormonal shifts, body composition, and lifestyle choices highlights the importance of individualized health assessments for women, particularly regarding vitamin D status and bone health.

Achieving Adequate Daily Intake

Moderate sun exposure aids the body in natural vitamin D production. Certain foods, such as egg yolks, fish, and liver, along with fortified products like milk and yogurt, provide varying amounts of the vitamin.

Dietary supplements are an option, and absorption is improved when taken with a meal containing fats. General recommendations suggest 600 International Units (IU) daily for individuals aged one to 70, and 800 IU daily for those over 71.

Frequently Asked Questions

What role does estrogen play in vitamin D?

Estrogen is important for activating vitamin D within the body.

Can lifestyle choices impact vitamin D levels?

Yes, spending more time indoors, using sunscreen frequently, and wearing clothing that limits sun exposure can increase the risk of vitamin D deficiency.

What are the recommended daily intakes of vitamin D?

Individuals between one and 70 years old need about 600 IU daily, while those over 71 need approximately 800 IU daily.

Maintaining sufficient vitamin D levels is crucial for protecting bone health and preventing long-term complications, especially for women.