Can Smartphones Affect Fertility? New Research on Birth Rates

If you have spent time trying to conceive, you have likely heard plenty of advice. Track your ovulation. Improve your diet. Get more sleep. Reduce stress.

But what if one of the most significant influences on modern fertility trends is something many of us carry in our pockets every day?

A recent study suggests that smartphones may be playing an unexpected role in declining birth rates. Before you panic, however, it is important to understand what the research actually found and what it does not mean for your fertility.

The findings offer an interesting perspective on how technology has changed the way we connect, communicate, and build families.

Can Smartphones Affect Fertility?

A recent working paper from the National Bureau of Economic Research (NBER), Is the iPhone Birth Control? Causal Evidence from AT&T’s 2007-2011 Carrier Monopoly, explored whether the introduction of smartphones may have contributed to declining birth rates in the United States.

Since 2007, the U.S. birth rate has fallen significantly. Researchers have proposed many explanations, including economic uncertainty, housing costs, delayed family building, and changing social norms.

The authors of this study examined another possibility: the launch of the first iPhone.

Because the iPhone was available exclusively through AT&T from 2007 to 2011, researchers were able to compare regions with stronger AT&T coverage to regions with more limited access. This created what researchers call a “natural experiment,” allowing them to study the potential impact of early smartphone adoption on birth rates.

Their findings were striking.

Key Findings from the Study

Researchers found that areas with greater early access to smartphones experienced larger declines in birth rates.

Among the findings:

• Early smartphone access was associated with lower birth rates among women ages 15 to 44.
• The strongest effects were observed among younger women ages 15 to 24.
• Smartphone adoption may explain a substantial portion of the decline in U.S. birth rates during the study period.

Importantly, the study examined birth rates, not biological fertility.

Do Smartphones Cause Infertility?

No.

One of the most important takeaways from this research is that smartphones do not appear to cause infertility.

The study did not evaluate egg quality, ovarian reserve, sperm quality, embryo development, or any other measure of reproductive function.

Instead, researchers concluded that smartphones may influence behaviors that affect how often people form relationships, spend time together, and ultimately have children.

This distinction is critical.

A decline in birth rates does not necessarily mean a decline in fertility.

How Can Smartphones Influence Family Building?

Researchers explored several possible explanations for the relationship between smartphone adoption and declining birth rates.

Less Face-to-Face Interaction

Smartphones have transformed how we communicate. Text messaging, social media, streaming entertainment, and online communities have created new ways to connect without being physically present.

While these technologies offer many benefits, they may also reduce opportunities for in-person interaction and relationship development.

Changes in Sexual Activity

The study also found evidence suggesting that increased smartphone use may be associated with lower sexual frequency.

When work emails, social media, videos, and endless online content are available around the clock, screens can compete for time and attention that might otherwise be spent connecting with a partner.

Shifting Lifestyle Patterns

Technology has fundamentally changed daily routines.

From entertainment and shopping to communication and work, much of modern life now occurs through a screen. Researchers suggest these broader lifestyle changes may contribute to delayed family formation and lower birth rates.

What Does This Mean If You Are Trying to Conceive?

For individuals and couples trying to conceive, this research offers an important reminder: broader fertility trends do not determine your individual fertility potential.

While smartphones may influence social behaviors, fertility is affected by many factors, including age, reproductive health, ovulation, sperm quality, endometriosis, polycystic ovary syndrome (PCOS), and other medical conditions.

If you are trying to conceive, consider a few practical takeaways.

Prioritize Connection

Creating dedicated time for connection with your partner can support both emotional well-being and intimacy.

Something as simple as putting phones away during meals, conversations, or before bedtime may help create more opportunities for meaningful connection.

Protect Your Mental Health

Technology can be a valuable source of information, but it can also contribute to anxiety.

Many fertility patients find themselves constantly searching symptoms, comparing experiences online, or worrying about every step of the process.

Taking occasional breaks from screens can help reduce stress and create healthier boundaries.

Focus on What You Can Control

National birth rates are influenced by complex social and economic factors. Your fertility journey is personal.

Rather than focusing on headlines about population trends, focus on evidence-based steps that support your reproductive health and overall well-being.

When Should You See a Fertility Specialist?

If you have been trying to conceive without success, it may be helpful to speak with a fertility specialist.

In general, evaluation is recommended after:

• One year of trying to conceive if you are under age 35
• Six months of trying to conceive if you are age 35 or older
• Earlier evaluation if you have known reproductive health concerns, irregular cycles, endometriosis, or male factor fertility issues

A fertility evaluation can help identify potential barriers to conception and provide clarity about your options.

The Bottom Line

Technology has transformed nearly every aspect of modern life, including how we communicate, build relationships, and spend our time.

This new research suggests that smartphones may have contributed to declining birth rates by influencing social and behavioral patterns. However, the study does not suggest that smartphones cause infertility or directly affect reproductive function.

For those trying to conceive, the message is reassuring. Fertility trends at the population level are not the same as your individual fertility potential.

If you have questions about your reproductive health or are struggling to conceive, the fertility specialists at Fertility Centers of New England are here to help. Our team provides personalized fertility evaluations, advanced fertility treatment options, and compassionate support at every stage of the family-building journey.

Ready to Learn More?

Schedule a consultation with Dr. John Petrozza, reproductive endocrinologist and fertility specialist at Fertility Centers of New England, to better understand your fertility and explore your family-building options.

FAQs

Can smartphones cause infertility?

No. The study did not find that smartphones cause infertility. Researchers examined birth rates and social behaviors, not biological measures of fertility such as egg quality, ovarian reserve, or sperm health.

Can screen time affect fertility?

There is limited evidence that screen time directly affects fertility. However, excessive smartphone use may influence sleep, stress levels, relationship dynamics, and intimacy, which can indirectly affect reproductive health.

Why are birth rates declining?

Experts point to many factors, including economic concerns, delayed family building, lifestyle changes, and shifting social patterns. This study suggests smartphone adoption may also have contributed by changing how people interact and form relationships.

When should I see a fertility specialist?

Individuals under age 35 should consider an evaluation after one year of trying to conceive. Those age 35 or older should seek evaluation after six months. Earlier consultation may be appropriate for those with known reproductive health concerns.

Does smartphone use affect IVF success?

This study did not examine IVF outcomes or fertility treatment success rates. There is currently no evidence that smartphone use directly affects IVF success.