Can Intermittent Fasting Affect Fertility?

Written by Andrew Brewer. ⚕️Reviewed and fact checked by our medical team.

can intermittent fasting affect fertility

Your body undergoes drastic changes when you start intermittent fasting. Your overall health and wellbeing will improve. It’s suggested that intermittent fasting can reduce your risk for certain diseases, including diabetes, heart disease, and even Alzheimer’s disease. As it impacts your body’s cellular and hormonal levels, it can also affect your body’s fertility, providing harmony and balance that may promote a regular menstrual cycle and ovulation.

More research is needed to understand the full impact intermittent fasting can have on your body. Still, early studies in mice suggest that it could help you improve your fertility naturally. Intermittent fasting can help you regulate your menstrual cycle and improve PCOS. Your fertility may improve under the right conditions, though more studies, especially in women, are needed to say that intermittent fasting can definitively improve your fertility.

Key Takeaways

  • Intermittent fasting may improve fertility in women by promoting a regular menstrual cycle and ovulation. However, more research is needed to fully understand its impact on fertility, especially in women.
  • Intermittent fasting can help regulate menstrual cycles for overweight women, but it could cause irregularities for underweight women. It’s crucial to consult with a doctor before making significant changes to your diet.
  • Intermittent fasting may be beneficial for women with Polycystic ovary syndrome (PCOS) by reducing insulin resistance, lowering glucose levels, and causing weight loss, which may lead to more regular menstrual cycles.
  • Intermittent fasting can help kickstart our metabolisms and promote balance within our bodies, but other factors impact fertility. It’s important to consider all factors and consult with a doctor before making any significant changes to your diet or lifestyle.
  • Resources such as intermittent fasting apps can provide additional support and guidance throughout your intermittent fasting journey, but it’s essential to listen to your body and adjust your diet accordingly.

Regulates Menstrual Cycle

Intermittent fasting can lead to weight loss and reduced inflammation for overweight women, among other health benefits. Because of their health conditions and weight, these women are also more likely to have irregular menstrual cycles. Irregular cycles can impact a woman’s ability to conceive naturally. It’s hard to predict a fertility window if you’re not ovulating regularly.

As you lose weight in a healthy and controlled manner, your hormones will balance, and your menstrual cycles will become more regular. It may take a few months for your cycle to jumpstart, but you’ll quickly notice a difference as your body resumes its natural production. Once that happens, you will begin to track your ovulation, which can help you predict the best window for you to conceive.

Conversely, if you’re not overweight, intermittent fasting could cause your body to develop irregularities, especially if you become underweight. It’s important to consult with a doctor before making significant changes to your diet to prevent any unintentional adverse reactions.

Improve PCOS

Polycystic ovary syndrome (PCOS) is a very common issue in women where their ovaries fail to release eggs regularly. They may ovulate inconsistently or not at all. Because of this, these women may have hormonal imbalances, infrequent or prolonged menstrual cycles, and other uncomfortable symptoms. If you suffer from PCOS, you may have difficulty getting pregnant, but intermittent fasting may help!

Early studies suggest that intermittent fasting can help women with PCOS by reducing their insulin resistance, lowering glucose levels, and causing weight loss, which may lead to more regular menstrual cycles. One study showed that intermittent fasting or short-term calorie restriction improved hormone production while decreasing leptin, testosterone, glucose, and insulin. This provides harmony within your body to promote improved fertility in women who have PCOS. It’s positive initial results, though more testing is needed to know the full impact of intermittent fasting on women with PCOS.

Bottom Line

More research needs to be conducted on how intermittent fasting impacts fertility. Still, early studies suggest that it may positively impact fertility, especially because it can provide much-needed balance in our bodies. Our body shuts down under intense periods of stress, including if we are leading unhealthy lifestyles.

Intermittent fasting can help kickstart our metabolisms, helping us burn fat while getting rid of some unhealthy habits and internal functions. Once our body is more balanced, our natural processes will resume, including regular ovulation during child-bearing ages.

There are, of course, other factors that impact your fertility, but intermittent fasting is worth trying if you have tried other options with few results. As always, consult with your doctor to ensure that intermittent fasting is right for you. It may be dangerous for you to intermittent fast with certain health conditions, so no matter what you do, be safe!

Don’t forget to check our 10 best intermittent fasting apps to make your intermittent fasting journey easier.


  • Can intermittent fasting affect fertility?

Intermittent fasting may impact fertility in some women, particularly those with a history of irregular periods or difficulty conceiving.

  • How does intermittent fasting affect fertility?

Intermittent fasting can cause changes in hormone levels, particularly in the ranks of insulin and leptin, which can have an impact on ovulation and fertility.

  • Can intermittent fasting be helpful for fertility?

Intermittent fasting may benefit fertility in some cases, particularly for women who struggle with polycystic ovary syndrome (PCOS), which can cause irregular periods and difficulty conceiving.

  • What are the risks of intermittent fasting on fertility?

While intermittent fasting can benefit some women, it can also be risky for others, particularly those who are already experiencing fertility issues or have a history of irregular periods.

  • What is the recommended approach for intermittent fasting when trying to conceive?

It is recommended that women who are trying to conceive consult with their healthcare provider before starting any fasting regimen. In addition, pregnant women trying to conceive should be cautious about fasting and may need to adjust their fasting schedule or approach.

  • What other factors can affect fertility?

Other factors impacting fertility include age, weight, stress, and certain medical conditions or medications. It is important to address any underlying issues that may be contributing to fertility problems.

  • Should women who are trying to conceive avoid all forms of fasting?

Women who are trying to conceive should not necessarily avoid all forms of fasting but should be cautious and consult with their healthcare provider before starting any fasting regimen. In addition, they may need to adjust their approach or schedule to ensure it does not negatively impact their fertility.

Andrew Brewer

Andrew Brewer

Andrew Brewer started to give people the guidance that he never received when he was first starting. His goal is to make your goals achievable and to offer you only the best fasting apps that the internet has to offer. You're not on your own - Andrew and the entire family of reviewers at are here with you every step of the way!