How Long After Quitting Weed Does Male Fertility Improve?

How long after quitting weed are men more fertile? The short answer is: it takes time, but it is possible. That’s because men create new sperm throughout their lives in a roughly 72–90 day cycle called spermatogenesis. This means it will take about three months after quitting cannabis for male fertility to improve if you don’t have any other issues that could impact sperm health.

This window gives your body time to regenerate new, healthier sperm, which is key if you’re trying to conceive.

Does Weed Really Affect Male Fertility?

Yes, regular cannabis use can negatively impact sperm quality. Long-term use of highly potent cannabis can affect your sperm’s quantity and quality. Here’s what the research says:

• Sperm count: Some clinical data suggest that frequent marijuana use can lower sperm count.
• Sperm motility: THC (tetrahydrocannabinol), the primary active compound in weed, can reduce how well sperm swim, a critical factor in fertilization.
• Morphology: Research from as far back as 1978 saw a link between cannabis consumption and abnormal morphology, which is the sperm shape. Irregularly shaped sperm can hinder fertilization. 
• Testosterone levels: Cannabis use may reduce testosterone and luteinizing hormone (LH) levels, both crucial for fertility.

While we need more research for a better understanding of the full impact, current data suggests that frequent cannabis use can compromise male fertility.

What Happens to Sperm When You Use Weed?

Loss of libido, issues with sperm development and oxidative stress are just a few of marijuana’s effects on sperm. The primary psychoactive compound found in marijuana, THC, can wreak havoc on your reproductive health in a few ways:

• Interrupts sperm development: THC binds to cannabinoid receptors found in the testicles and reproductive tract, disrupting spermatogenesis (the process of making new sperm).
• Increases oxidative stress: Cannabis use can lead to an increase in oxidative stress, which can damage sperm cells and DNA.
• Disrupts hormones: Weed alters levels of critical reproductive hormones, including testosterone and FSH (follicle-stimulating hormone).
• Decreases libido: In some cases, cannabis use may reduce sex drive and sexual function, compounding fertility challenges.

How Long After Quitting Weed Does Sperm Improve?

It can take about three months after quitting cannabis use to see an improvement in sperm health. That’s because sperm production takes around 72–90 days, and each new cycle gives your body a fresh chance to produce higher-quality sperm.

If your cannabis use was lengthy, frequent or heavy (multiple times per month), it may take longer to see measurable changes in sperm count, motility, and morphology.

If you’re planning to conceive, it’s a good idea to stop using cannabis at least three months before trying.

What Affects the Speed of Fertility Recovery?

How quickly sperm health improves after quitting weed depends on several key factors:

• Frequency and duration of past use: Heavy, long-term cannabis use may take longer to reverse.
• Consumption method: Smoking weed may have more adverse effects than edibles or vaping, though all forms can impact fertility.
• Age: Sperm quality tends to decline with age, which may influence your recovery timeline.
• General health: Underlying conditions, such as obesity, diabetes, or hormone imbalances, can slow down improvement.
• Lifestyle: Poor diet, stress, alcohol, or tobacco use can all interfere with sperm regeneration.

Can Male Fertility Fully Recover After Quitting Marijuana?

We’re not 100% sure if your fertility will fully recover, but many men seem to have normal sperm over time after quitting cannabis use. Your best bet is to give it at least 2-3 months for an optimal recovery before trying to conceive again, and support your overall fertility with adequate sleep, nutrition and physical activity.

Tips to Help Fertility After Quitting Weed

After you have decided to quit weed use, you may want to supplement your efforts. Here’s how you can further support your fertility:

• Eat antioxidant-rich foods: Focus on nutrients like zinc, folate, and vitamin D.
• Exercise regularly: Aim for moderate, consistent movement.
• Cut back on alcohol and tobacco: These can also impair sperm health. Alcohol can also alter sperm shape, speed and count.
• Consider male fertility supplements: Targeted nutrients can support hormonal balance and sperm quality.
• Prioritize sleep and stress reduction: Chronic stress and poor rest disrupt fertility.

Together, these changes can help optimize your body for conception.

When to See a Fertility Specialist

If you have been trying to conceive for a year with no success, or have been trying for 3-6 months after quitting weed, it may be time to consult a specialist. 

A male fertility evaluation typically includes:

• Semen analysis: To assess sperm count, motility, and morphology.
• Hormone testing: To check testosterone, FSH, LH, and other key markers.
• Health history and lifestyle review: To identify additional factors that may be impacting fertility.

Early intervention can lead to more effective treatment and better outcomes.

FAQs About Weed and Male Fertility

How long does it take for sperm to recover after quitting weed?

It usually takes about three months, as sperm regenerate every 72–90 days.

Can weed make you permanently infertile?

We don’t have strong evidence that cannabis use causes permanent infertility. Some research suggests that heavy, long-term use can significantly reduce fertility, and you may need longer than 3-6 months to see significant improvement.

Is vaping or using edibles better for fertility?

While smoking may be more harmful, all forms of THC can affect the reproductive system.

Does weed lower testosterone in men?

Yes, cannabis has been shown to alter testosterone levels in some users, potentially impacting sperm production.

Can I take a sperm test at home after quitting cannabis?

Yes, at-home tests can provide basic information on sperm count and motility, but for a complete analysis and counseling, consider seeing a fertility specialist for the most accurate picture of your reproductive health.