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Health effect

Sperm Count

A guide to interpreting a low sperm count, supplement trials and the outcomes that matter when trying for a baby.

Fertility

Does a low count mean you cannot conceive?

A low sperm count can make conception harder, but natural conception may still be possible and fertility treatments can help. A semen analysis checks sperm numbers as well as movement and shape. 1

Why look beyond one result?

A semen test alone cannot determine fertility. European guidance recommends a medical and reproductive assessment, with at least two semen analyses if the first is abnormal. 2

When should you seek help?

The NHS advises assessment after a year of regular unprotected sex without conception, or after six months if the partner who would become pregnant is 36 or older. Both partners may need tests. 1

Nutrients with the strongest ratings

Sorted by the largest rated effect. Bars show effect size, the letter is the evidence grade.

ZincStrongA
AshwagandhaStrongA
Mucuna PruriensStrongA
D-Aspartic AcidModerateB
TribulusModerateB
Superoxide DismutaseSmallC
Vitamin B6SmallD
Every ratingEvery nutrient rated for sperm count, with search

Does zinc improve the chance of a baby?

The large trial below measured live birth as well as semen quality. 3

Zinc plus folic acidNot supported

In a randomized trial involving 2,370 couples seeking fertility treatment, men received 30 mg elemental zinc plus 5 mg folic acid daily for six months or placebo. Live birth rates were 34% and 35%, respectively, with no significant benefit in semen quality. Gastrointestinal symptoms were more common with supplementation. This combination was not an effective general fertility treatment in that population. 3

What about antioxidant combinations?

A Cochrane review found very uncertain evidence that antioxidants might improve live birth rates in subfertile men. When studies at high risk of bias were excluded, the apparent benefit disappeared. Stomach discomfort may increase. European guidance does not recommend routine antioxidant treatment for unexplained male infertility. 2 4

Can ashwagandha raise sperm count?

This pilot studied semen measurements rather than whether treatment led to a baby. 5

AshwagandhaToo little evidence

A small randomized study enrolled 46 men with low sperm concentrations. It tested 675 mg of root extract daily for 90 days and reported improved semen parameters. Such a small trial cannot establish a reliable fertility benefit; a change in sperm measurements does not demonstrate more live births. 5

What should you check before trying a botanical?

Ashwagandha has been linked to rare liver injury and may interact with sedatives and thyroid medicines. NCCIH advises against use in people with thyroid or autoimmune disorders. 6

Which products are outside this review?

This page does not assess tribulus, mucuna pruriens, D-aspartic acid, vitamin B6 or superoxide dismutase supplements.

Questions people ask

Is one abnormal semen result the final answer?

No. European guidance recommends at least two semen analyses when the first result is abnormal. 2

Does a higher count automatically mean a higher chance of a live birth?

No. Semen results alone cannot determine fertility; the couple needs a broader assessment. 2

Should everyone trying for a baby take zinc and folic acid?

The large trial in couples seeking fertility care found no live birth benefit from that combination. 3

Are antioxidant supplements proven to help?

The Cochrane review rated the live birth evidence very uncertain, with no clear benefit after removing trials at high risk of bias. 4

Can an abnormal result still lead to useful treatment?

Yes. The NHS describes specialist assessment and options such as IVF or ICSI when appropriate. 1

Sources

  2. EAU Guidelines: Male infertility European Association of Urology