Women's Biological Clocks

Your biological clock is responsible for more than just waking up and falling sleep. It also determines when women are able to conceive. Find out more about common myths surrounding "biological clocks" in this article.
Women's Biological Clocks

Last update: 21 July, 2018

The most common myth about women’s biological clocks is that the desire to have kids starts as they get older. However, there isn’t evidence that suggests that women are born needing to have children. There isn’t a biological reason for “baby fever.”

Women’s biological clocks determine their fertility after they’re 35 years old. Their ability to have a child begins to decline. This is because the number of eggs and their quality decrease as they get older. Women start to become less and less fertile.

However, there are many places that offer infertility treatments and help women get pregnant that are having difficulty conceiving.

Women’s Biological Clocks

The first thing you should know is that the productive age of women starts with their first menstrual cycle, which generally happens around age 12. It lasts until their last period, about 4 decades later.

A few different things cause women’s fertility to start decreasing in their 20’s and 30’s. Fertility decreases significantly after age 35.

The chances of getting pregnant is much lower in women between 30 and 40 years old. However, you should keep the factors that extend your biological clock in mind. 

Women's Biological Clocks

Relationship Between Age and Fertility

The truth is that age undeniably affects fertility. After puberty, female fertility increases. Then, as a woman ages, there is higher risk of not being able to conceive.

Generally, women follow this timeline regarding the connection between age and fertility:

  • Peaks in early and mid-20’s. After, fertility starts to slowly decline.
  • More dramatic fall around 35 years old.
  • Stop of menstrual periods, or menopause, which generally occurs between ages 40 and 50.
  • Menopause marks the end of fertility, although infertility from aging could occur before this date.

Women who are 35 or older should know that age has a lot to do with fertility. In fact, the probability of having a child gradually decreases starting in your 20’s and rapidly decreases after you turn 40. Certainly, there are some factors that also influence female fertility.

“Women’s biological clocks determine their fertility after they’re 35 years old. Their ability to have a child begins to decline. However, there are many places that offer fertility treatments.”

Influential Factors in Women’s Biological Clocks

The health of a woman before pregnancy affects both her chances of conceiving and carrying out a healthy pregnancy. Smoking, drinking alcohol moderately or excessively, and weight problems make it harder to get pregnant.

On the other hand, other medical conditions such as high blood pressure or diabetes affect the chances of having a successful pregnancy. You should also keep your family history in mind if anyone has had these conditions.

Women's Biological Clocks

Genetics greatly influence when women will stop releasing eggs. As a result, they will stop their menstrual cycles.

Also, the couple’s general health also influences the possibilities of becoming pregnantIn fact, you can prolong fertility by addressing health risks that you’re able to control.

Finally, we want to remind you that the myth of a woman’s biological clock is just that – a myth. The assumption that it’s “a timer saying you must get pregnant before age 35” is just one way in which society understands motherhood and women’s fertility.

You shouldn’t feel any type of pressure to be a mother before you’re ready.

You should know that the current trend is to have children at an older age. Motherhood among women older than 40 is also growing. This could be due to new fertility treatments that help overcome natural infertility.


All cited sources were thoroughly reviewed by our team to ensure their quality, reliability, currency, and validity. The bibliography of this article was considered reliable and of academic or scientific accuracy.

This text is provided for informational purposes only and does not replace consultation with a professional. If in doubt, consult your specialist.