Discover how scent therapy supports the brain’s energy reward system by naturally activating dopamine and improving engagement in seniors.

Instead of asking “How do we stimulate this person?” we ask: “How do we make engagement feel energetically worthwhile?”

Scent therapy is redefining how we understand behavior, motivation, and care. A groundbreaking study from Hebrew University of Jerusalem researchers Matan Cohen and Shir Atzil, published in Neuroscience & Biobehavioral Reviews, challenges one of our most deeply held assumptions: that the brain’s reward system is designed to seek pleasure.

Instead, they propose something far more practical—and far more powerful.

The brain is not chasing happiness. It’s managing energy.

Table of Contents

• The Brain’s Real Job: Energy Management

• Dopamine and Opioids—Reimagined

• Where Scent Therapy Comes In

• Scent as a Dopamine Mobilizer

• Why This Matters in Senior Care

• Scent as Both Mobilizer and Stabilizer

• A New Conversation in Care

• FAQ

The Brain’s Real Job: Energy Management

Every function in the body comes at a cost. Thinking, moving, healing, even regulating emotions—each requires energy. From an evolutionary standpoint, survival depends on using that energy wisely.

This research introduces a metabolic framework for reward, suggesting that:

• The brain’s primary goal is to optimize energy use

• What we experience as “reward” is actually the brain reinforcing efficient energy strategies

• Behavior is guided not by pleasure alone, but by biological cost-benefit analysis

This reframing changes everything.

 Dopamine and Opioids—Reimagined

In this model, two key players take on new roles:

• Dopamine = The Mobilizer
  It prepares the body for action—raising alertness, increasing motivation, and mobilizing energy resources

• Opioids = The Stabilizer
  They bring the system back down—restoring calm, conserving energy, and promoting recovery

Together, they form a dynamic system of activation and restoration.

Where Scent Therapy Comes In

Now here’s where things get interesting.

What if we could influence this system naturally, non-invasively, and immediately?

What if we could support dopamine activation—not through stimulation overload—but through scent?

The Olfactory Shortcut

Unlike other senses, smell has a direct pathway to the brain’s emotional and regulatory centers, including areas involved in:

• Memory

• Emotion

• Arousal

• Autonomic function

This means scent doesn’t need interpretation—it creates a physiological response almost instantly.

Scent as a Dopamine Mobilizer

Certain scent profiles—particularly those high in compounds like limonene (found in citrus)—have been observed to:

• Increase alertness

• Improve engagement

• Reduce agitation (especially in dementia care)

• Support mood elevation without overstimulation

From a metabolic perspective, this suggests something powerful:

Scent may help the brain decide when it’s worth spending energy.

Instead of forcing stimulation (which can be costly), scent may provide a low-energy signal that gently encourages the brain to mobilize.

Why This Matters in Senior Care

In aging populations—especially those living with dementia or Alzheimer’s—the energy equation becomes even more critical.

When the brain perceives the environment as “not worth the effort,” we often see:

• Withdrawal

• Reduced appetite

• Sleep disturbances

• Lack of engagement

If reward is tied to energy optimization, then these behaviors are not just symptoms—they are adaptive responses.

And this is the shift:

Instead of asking “How do we stimulate this person?” We ask: “How do we make engagement feel energetically worthwhile?” Scent may be one of the most effective tools to do exactly that.

 Scent as Both Mobilizer and Stabilizer

What makes scent therapy uniquely powerful is its ability to support both sides of the system:

• Citrus and bright notes → support dopamine activation (mobilization)

• Soft, grounding scents → support opioid pathways (stabilization and recovery)

This aligns perfectly with the brain’s natural rhythm:

engage → recover → conserve → re-engage

A New Conversation in Care

This emerging research invites us to rethink not just neuroscience—but care models.

Scent therapy is no longer just about “pleasant smells.”

It becomes:

• A regulatory tool

• A communication pathway

• A way to align with the brain’s energy priorities

Unfortunately, 78.4% of seniors who are admitted cannot smell or have low thresholds. This can improve with 15-minute sessions of scent therapy twice a week for 7–10 weeks.

This activity, based on running best practices and multiple case studies conducted here in Canada by Smelling Pink Inc, demonstrates there is hope. A simple evaluation from our scent therapy intake kit can determine if and how much an individual can smell.

If the brain’s goal is not happiness, but efficiency…

Then perhaps the most effective interventions are not the loudest or the strongest—but the smartest.

And sometimes, the smallest input—a scent—can be enough to shift the entire system.

FAQ

What is scent therapy?
Scent therapy uses targeted olfactory stimulation to support brain function, emotional regulation, and behavior.

Can scent therapy increase dopamine naturally?
Emerging research suggests scent may support dopamine activation by signaling the brain to mobilize energy efficiently.

Why is smell important in seniors?
Loss of smell impacts appetite, mood, sleep, and engagement—making it critical in care planning.

How long does scent therapy take to work?
Programs using 15-minute sessions twice weekly over 7–10 weeks have shown measurable improvements.

Ready to bring scent therapy into your care model?  Understand our web based training program. Book a consultation or request your Scent Therapy Intake KitShop today.

 Related Articles or Services

• The Power of Limonene and the connection to sleep

• Early Smell Intake Testing in Long-Term Care Homes

• Reawakening the Brain: Scent Therapy for Parkinson’s Patients

Tracy Pepe
Founder of Smelling Pink Inc, specializing in evidence-based scent therapy programs for senior care, dementia, and wellness.

Watch Tracy’s full TEDtalk and learn more about the science behind scent therapy.