Vitamin D deficiency can lead to various health issues. The major cause of vitamin D deficiency is the lack of sun exposure in moderation. Sun is the major source of vitamin D for most humans.
Vitamin D deficiency causes rickets in children and will precipitate and exacerbate osteopenia, osteoporosis, and fractures in adults. Vitamin D deficiency has also been associated with increased risk of common cancers, autoimmune diseases, hypertension, and infectious diseases.
Now recent research suggests that vitamin D deficiency can also play an important role in fertility issues. Polycystic ovary syndrome (PCOS) which is also related to female reproductive complications can get aggravated due to Vitamin D deficiency.
Meanwhile, in men, vitamin D deficiency has been associated with reduced sperm quality and infertility. Studies suggest that vitamin D is essential for maintaining healthy sperm production and function.
A 2022 study published in the Nutrients journal reveals that the degree of vitamin D deficiency correlates with the severity of PCOS.
According to the latest Central and Eastern European Expert Consensus Statement, for women who are planning pregnancy, vitamin D supplementation should start or be maintained as recommended for healthy adults without other risk factors.
Meanwhile, the supplementation should be continued during pregnancy and lactation to achieve and maintain optimal vitamin D levels (30–50 ng/mL or 75–125 nmol/L 25(OH)-vitamin D).
Another 2018 study published in Human Reproduction journal revealed that women undergoing assisted reproductive technologies (ART) who have adequate levels of vitamin D had more positive pregnancy tests, an easier time getting pregnant, and higher rates of live births compared to those with lower vitamin levels.
A 2010 study pointed out that increasing your vitamin D levels can boost the level of testosterone in men. According to the National Osteoporosis Foundation, all adults should consume 800-1000 IU of Vitamin D3 per day. If you have deficient levels of vitamin D, you can take higher dosages of vitamin D3.
