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Vitamin D – a key factor in male fertility

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In my online fertility program, I talk about Vitamin D being a critical nutrient in both male and female reproductive health. A new Turkish study has looked at this issue even further, particularly in cases of idiopathic (unexplained) male fertility, which is increasing worldwide.

The researchers found a clear correlation between serum (blood) Vitamin D levels and impaired sperm parameters, including sperm morphology, total sperm motility and progressive sperm motility.

Vitamin D had previously been hypothesized to have an impact on sperm health through its impact on testosterone levels. But this most recent study found Vitamin D deficiency to be an independent risk factor for male infertility, through its effects on spermatogenesis (production of sperm) and sperm maturation. Not surprisingly, the study authors recommended Vitamin D in patients with idiopathic male infertility.

In my clinic I like to see serum 25-HydroxyVitamin D at a minimum of 75nmol/L, but ideally between 100 and 150nmol/L. I base my dosing depending on the lab results, often starting with higher dosages of supplementation (5,000 to 10,000 IU per day) until those lab values are achieved, and then determining the maintenance level over time (often 1,000 to 4,000 IU per day).

I hope you have found this helpful, and do let me know if you have any questions!

If you are hungry for more evidence-based information for your fertility or pregnancy journey, visit www.myhealthypregnancyplan.com for free webinars and complete programs.

And if you are a care-provider looking for evidence-based resources for your fertility or pregnancy patients, please get in touch with us at support@myhealthypregnancyplan.com.

In health,

Dr Jocelyn Land-Murphy, ND

Terra Life

Disclaimer: The information and content provided is for general educational and informational purposes only and is not professional medical advice, nor is it intended to be a substitute therefore. Please consult the Disclaimer and Terms of Use for full details.

References:

Mustafa, O. et al. (2021). Is serum vitamin D level a risk factor for idiopathic male fertility? Journal of men’s health.

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