Vitamin D is also known as the “sunshine vitamin.” It is produced in the skin in response to sunlight exposure and can also be consumed through food and supplements. Some foods that are high in Vitamin D are salmon and sardines.
As we are more effective in metabolising Vitamin D via sun exposure than supplements, it is always better to get more sun.
Many women do not have sufficient sun exposure. Having adequate Vitamin D is closely linked to increased success in IVF, higher pregnancy success rates, and live birth rates.
Not only it is vital for fertility, but it is also essential to maintain high levels of Vitamin D during pregnancy. Studies have linked vitamin D deficiency with an increased risk of preterm birth, gestational diabetes, preeclampsia (very high blood pressure during pregnancy), and bacterial vaginosis.
For more information: https://www.shadygrovefertility.com/blog/fertility-health/how-vitamin-d-affects-your-fertility/