Does low ovarian reserve mean early menopause? Plus 8 other big questions

When you first hear the term ‘low ovarian reserve,’ it’s easy to assume it’s directly linked to early menopause. After all, if your egg count is lower than expected for your age, does that mean a fast track to perimenopause or even menopause itself? 

The short answer: not necessarily. But let’s break it down properly – because if you’re here, you’re looking for clarity, reassurance, and some solid facts.

Does low ovarian reserve mean early menopause?

Low ovarian reserve (LOR) simply means a lower-than-average number of eggs in your ovaries, for your given age. It’s often detected through tests measuring anti-Müllerian hormone (AMH) levels and follicle-stimulating hormone (FSH). We reviewed an at-home test in fact, not so long ago, which gives you the results in just 10 minutes. 

But here’s the key point: while LOR can sometimes indicate that menopause might come earlier, it’s not a guarantee.

Menopause is diagnosed when you haven’t had a period for 12 months straight. The average age for this in the UK is 51, and while some people with LOR might reach menopause earlier, others won’t. It’s about more than just egg count – hormonal health, genetics, and overall ovarian function all play a role.

What about perimenopause?

Perimenopause is the transition phase before menopause, marked by fluctuating hormones and symptoms like irregular periods, hot flashes, and sleep disturbances. Some people with LOR experience these symptoms earlier than expected, but again, LOR alone doesn’t mean you’re definitely in perimenopause.

For more on how to look after yourself during this phase, check out our super-handy and supportive quick-start guide, with legendary health screening pros Randox.

Can LOR cause early menopause?

Complicated isn’t it? LOR doesn’t directly cause early menopause, but it can be one of the factors influencing it. Early menopause – defined as menopause before the age of 45 – can be triggered by various causes, including genetics, medical treatments, autoimmune conditions, and yes, ovarian function.

However, some people with LOR go on to have regular periods and hormonal cycles for many years. If you’ve been diagnosed with LOR, it’s important to talk to a specialist to understand what it means for you specifically.

If I have LOR, am I definitely in menopause?

No. LOR does not equal menopause. You can have a lower egg count and still have a functioning menstrual cycle, ovulate, and even conceive naturally. Menopause, by definition, is the end of your reproductive years, while LOR simply describes a lower-than-average reserve.

Low ovarian reserve symptoms

LOR often has no symptoms at all, which is why it’s usually only discovered during fertility testing. However, some people may notice:

• Shorter menstrual cycles
• Lighter or irregular periods
• Difficulty conceiving

For a deeper dive into the signs and latest research on LOR, read this expert breakdown.

Deep dive: Our big questions for Google

Alongside the connection to low ovarian reserve, here’s what we most want to know about early menopause, and what the research shows in 2025. 

Is early menopause hereditary?

Yes, genetics play a huge role. If your mother, grandmother, or older sisters experienced menopause early, you may be more likely to as well. However, lifestyle and environmental factors also contribute, so it’s not a certainty.

Can IVF trigger early menopause?

No, IVF does not trigger early menopause. This is a common myth. While IVF involves stimulating the ovaries to mature multiple eggs at once, it doesn’t ‘use up’ more eggs than your body would naturally. 

We recommend TFP Fertility’s brilliant info hub for more details, if you’re concerned about this topic. 

Does early menopause mean early death?

Please don’t panic! Early menopause is linked to a slightly increased risk of certain health conditions, like osteoporosis and cardiovascular disease, due to the earlier decline in estrogen. However, with the right lifestyle choices and medical care (including hormone replacement therapy, if suitable), you can manage these risks effectively.

Can stress cause early menopause?

Chronic stress can affect hormone balance and menstrual cycles, but it’s unlikely to be the sole cause of early menopause. However, extreme physical or emotional stress combined with other factors (like autoimmune disorders or genetic predisposition) could contribute to an earlier transition.

Read up with The Menopause Charity for lots more information and support on this aspect – stress is definitely something to keep tabs on, whichever milestone you’re at. 

On your reading list

If you’re navigating low ovarian reserve, perimenopausal symptoms, or concerns about early menopause, the best thing you can do is get informed and create actionable steps towards your health goals. 

Here are some expert-approved resources to start with:

• Understanding FSH & ovarian reserve – A detailed look at FSH and its role in ovarian function.
• Primary Ovarian Insufficiency: symptoms & support – For those diagnosed with POI, a key cause of early menopause.
• NHS early menopause overview – The NHS guide to symptoms, causes, and treatment options.

Whether you’re exploring fertility options, managing perimenopausal symptoms, or simply wanting to understand your body better, knowledge is power. 

Keep asking questions, keep advocating for yourself, and know that you’re not alone on this journey – I’m there, in fact, and navigating with you. Pop us a DM with any questions or thoughts – we’d love to hear from you.