Cognitive Shifts During Pregnancy: What to Know

Pregnancy brings many physical and emotional changes. While most people know about fatigue, cravings, and mood swings, fewer talk about how pregnancy can also affect thinking and memory. These mental shifts are real and can influence daily life in both small and noticeable ways.

Here are the common cognitive changes during pregnancy, why they happen, and what to expect.

Knowing What “Pregnancy Brain” Means

Many people use the term “pregnancy brain” to describe forgetfulness, mental fog, or a slower thought process during pregnancy. Research shows that some pregnant individuals may notice a decline in memory, attention span, and the ability to multitask. These changes often begin in the second or third trimester and may continue for a short time after birth.

While not all pregnant people experience the same symptoms, many report feeling mentally slower or more distracted. This is not a sign of low intelligence or poor focus. It’s a natural result of the body and brain adjusting to the demands of pregnancy.

What Are the Causes?

Hormonal shifts are one of the main reasons for cognitive changes during pregnancy. Levels of progesterone and estrogen increase sharply and can affect brain function, especially areas linked to memory and emotions. These hormones help prepare the body for birth and parenting but may temporarily interfere with thinking patterns.

Another cause is poor sleep. Many pregnant individuals have trouble sleeping due to physical discomfort, frequent bathroom trips, or vivid dreams. Lack of sleep affects memory, learning, and focus.

Stress and emotional shifts can also play a role. During this period, it’s common to feel anxious about the baby’s health, upcoming labor, or changes in personal life. This mental load can reduce the brain’s ability to hold or recall information quickly.

Exploring the Research

Several studies suggest that pregnancy can bring changes in brain structure. One study using brain scans found that some parts of the brain shrink slightly during pregnancy. These changes support bonding and help the brain adapt to parenting. Although that may sound concerning, it is not harmful. In fact, it reflects how the brain shifts focus toward social and emotional tasks, which are helpful during motherhood.

Coping with Day-to-Day Challenges

It can be frustrating to forget appointments or misplace items more often. However, many pregnant people find that using simple tools helps. Writing things down, keeping a routine, and asking for help when needed can make a big difference. Also, staying physically active and taking time to rest can support mental well-being.

If the symptoms become severe or are paired with deep sadness or disconnection, it’s important to speak with a healthcare provider or mental health professional. Sometimes what seems like cognitive decline may be linked to prenatal depression or anxiety.

Supporting a Healthy Mental State

Pregnancy is a time of great change. It affects not only the body but also the mind. Understanding that cognitive changes are common can help reduce stress and self-blame. These shifts are usually temporary and part of the body’s natural response to preparing for a new life.

If you're feeling mentally overwhelmed during pregnancy, you're not alone. At Tally Reproductive Psychiatrist, LLC, we offer compassionate, evidence-based care tailored to your needs. Reach out today to schedule a consultation and take the first step toward better mental wellness during and after pregnancy.