Repetitive Head Impacts in Sports: Brain Health Across a Lifetime

Repetitive Head Impacts in Sports: Brain Health Across a Lifetime

Sports play an important role in many people's lives. They build discipline, teamwork, resilience, and community. For young athletes especially, sports can shape character and provide structure during critical developmental years.

But alongside these benefits, medical research has increasingly focused on a question that deserves thoughtful discussion:

How do repeated hits to the head affect the brain over time?

This conversation is not about discouraging participation in sports. Instead, it is about education, prevention, and informed participation so athletes can enjoy sports while protecting long-term brain health.

What Are Repetitive Head Impacts?

When most people think about brain injury in sports, they think about concussions.

However, researchers now recognize that repetitive head impacts (RHI) can also affect the brain, even when those impacts do not cause a diagnosed concussion.

Repetitive head impacts occur when the brain experiences multiple smaller blows over time, such as:

• routine collisions in football

• heading the ball in soccer

• repeated contact in hockey or lacrosse

• sparring in boxing or martial arts

Individually, these impacts may not cause noticeable symptoms. But over years of exposure, scientists believe they may contribute to neurological changes.

Why Researchers Are Studying Repetitive Head Impacts

In the last two decades, researchers studying former athletes have identified patterns of neurological disease associated with long-term exposure to repeated head trauma.

One condition that has received significant attention is Chronic Traumatic Encephalopathy (CTE).

CTE is a neurodegenerative disease associated with repeated head impacts. It has been observed in some former athletes, military veterans exposed to blast injuries, and individuals with long histories of repetitive head trauma.

Symptoms that may develop over time can include:

• memory problems

• mood changes

• impulse control issues

• cognitive decline

It is important to understand that not everyone exposed to repetitive head impacts develops CTE, and research into risk factors is ongoing.

What scientists do know is that reducing unnecessary head impacts is an important step in protecting brain health.

Brain Health Across a Lifetime

The brain is not static. It changes throughout life.

Children and adolescents are in critical stages of brain development. Young adults are still developing neural connections. Even later in life, the brain continues to adapt and change.

Because of this, brain health must be viewed as a lifetime consideration.

Protecting the brain during sports participation helps support long-term neurological health, just as protecting joints helps prevent arthritis later in life.

What Athletes, Families, and Coaches Can Do

Awareness and prevention are key.

Athletes can continue to enjoy sports while taking steps to protect brain health.

Important practices include:

• recognizing the signs of concussion
• removing athletes from play when symptoms appear
• allowing full recovery before returning to sport
• reducing unnecessary head contact in practices
• teaching proper techniques that minimize head impact
• encouraging open communication about symptoms

Education helps athletes make informed decisions and ensures safety remains a priority.

A Balanced Conversation About Sports and Brain Health

Sports provide tremendous value. They promote physical fitness, social connection, and personal growth.

The goal of current research is not to eliminate sports, but to ensure that athletes can participate safely and responsibly.

By understanding the potential effects of repetitive head impacts, families and coaches can help create an environment where both athletic development and brain health are protected.

Learn More

For additional resources about brain injury and CTE:

• What Is CTE?

• Early Warning Signs of Brain Injury

• Behavioral Changes in Brain Injury

• CTE in Veterans

If you're new to this topic, start with our beginner guide: Why Repeated Hits to the Head Matter — Even Without a Concussion.