Vitamin C and fertility

Natural Fertility and Vitamin C

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Natural fertility isn’t just about getting the woman healthy. Up to 30% of couples that struggle with infertility do so because of male factor, and another 30% have combined issues. So nutrition is equally important in men – their bodies must be nourished with the correct nutrients to support sperm production as well as the quality of the sperm. A good solid fertility diet is a wonderful for men, but sometimes, depending on the male factor infertility issue, some supplementation may be helpful.

One University of Texas study has shown that increasing the daily amount of Vitamin C in men helps them produce more sperm, stronger sperm, and more mobile sperm. Sometimes the sperm count rose over ten times when men started ingesting the healthy amount of vitamin C.

Basically, it’s thought that because vitamin C is an antioxidant, it helps to protect the sperm and it’s DNA from damage thereby increasing the sperm quality. Sperm with damaged DNA can fail to thrive at all or fail to allow conception. And in some circumstances, it’s the damaged DNA that causes birth defects or a failure for the baby to thrive.

So vitamin C helps to neutralize any chemicals or toxins found in the semen from things like environmental pollution, or smoking. (Another reason to quit before you try to conceive!)

Along with its antioxidant properties vitamin C seems to help semen be less sticky, or clumped together, so that the sperm can more easily move and swim to meet the egg.

Foods high in Vitamin C:

  • red peppers (1/2 cup has 142 mg)
  • orange (70mg)
  • broccoli (1/2 cup has 62 mg)
  • kiwi (74 mg)
  • papaya (62 mg)
  • strawberries (5 of them have 51 mg)

How much should you take?

The RDA amount for Vitamin C was raised awhile back, almost across the board for all men, women, and children. What used to be 60mgs per day for men, now stands at 90 for non smokers and 120 for smokers. If this seems quite low to you, bear in mind that this is the amount needed just to prevent certain illnesses like scurvy.

Fertility studies showing the effects of vitamin C were done using supplements of 1000mgs, 3000mgs, and sometimes even more per day. 

You’ll know when you’ve reached your bodies limit for vitamin C in one easily noticed bodily reaction – loose stools. You see, vitamin C is a water soluble vitamin, meaning that what the body doesn’t use, it eliminates. So you should be able to increase the amount you take until you notice this reaction – you’ll then know how much your body needs.

If you’re dealing with male infertility it may be wise to supplement the husbands diet with a good quality vitamin C supplement throughout the womans cycle, as well as increase supplementation right before and during ovulation to help the sperms mobility.


*I should also let you know that taking aspirin, alcohol, or antidepressants has been shown to lower vitamin C levels in the body. And high doses of C can also make some medications not as effective, so check with your doc if you’re serious about taking large doses and are already on meds. About 3/4 of the way down on this page tells you a bit more about the safety of high vitamin C doses.


Check out this month\'s sponsor, Natural Fertility Shop. They are 100% focused on helping you during your journey towards parenthood and have expert staff and knowledgeable customer service here to help you every step of the way.

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About Donielle

Donielle is an amateur herbalist and natural momma to two littles (with another babe in heaven) after dealing with being less than fertile. She has a passion for nourishing nutrition, natural living, and spreading the word on how food truly affects our health.


  1. Thank you for this insight!!

  2. I saw amazing results with my basal body temperatures when supplementing with high dosages of Vitamin C. I never had that sudden spike in temperature after I had ovulated. It would be a slow rise for a few days until it got to the proper high temperature. This can a sign of low progesterone. My naturopathic doctor put me on a natural progesterone cream but I didn’t find it worked for me. It made me really emotional (crying) and I didn’t notice any changes in my temperatures (sometimes I thought my temps were worse off). I read in a book how Vitamin C can help with progesterone so I went off the cream and started taking four 500mg chewable Vitamin C tablets in the morning and then four more right before bed. That month I had the sudden spike in temperature after I ovulated and the next two months of charting after that. I’m still not pregnant but that’s okay. I was just so impressed by the results in my temperatures as this was the only change I made and it was so easy to do.