Smell therapy uses scent to support appetite, cognition, and engagement. Learn how research-backed scent therapy helps individuals who struggle with eating.

For individuals who struggle with eating, appetite loss is rarely just about food. It is often deeply connected to cognition, memory, emotion, and sensory processing. This is where smell therapy — also known as scent therapy — is gaining attention as a powerful, non-invasive support tool.

An estimated 78.4% of seniors living in long-term care have little to no ability to smell, significantly impacting how they experience food, appetite, and emotional connection to meals. This loss of olfactory function alters not only taste perception, but also memory and association with food — often leading to reduced engagement at mealtimes.

Emerging research now confirms what care teams and families have long observed: scent can influence appetite, eating behaviour, and energy regulation, particularly in individuals experiencing cognitive decline, neurological conditions, or emotional distress. At Smelling Pink, we focus on translating this research into meaningful, practical care experiencesthat support dignity, engagement, and well-being.

Table of Contents

1. What Is Smell Therapy?
2. Appetite Dysregulation and Eating Challenges
3. What the Research Says About Scent and Appetite
4. How Smell Therapy Works in Real-World Care
5. What to Expect From Smell Therapy Programs
6. FAQ: Smell Therapy and Appetite Support

What Is Smell Therapy?

Smell therapy is the intentional use of scent to stimulate the brain areas responsible for memory, emotion, and physiological regulation. Unlike other senses, smell has a direct pathway to the limbic system — the part of the brain that governs appetite, mood, and emotional memory.

At Smelling Pink, smell therapy is designed to be:

• Evidence-informed
• Trauma-aware
• Accessible to individuals with cognitive or physical limitations

Learn more about Smelling Pink’s Smell Therapy Programs

Why Smell Is So Powerful

• Smell bypasses rational thought and reaches emotional memory first
• Familiar aromas can reduce anxiety around eating
• Scent can cue hunger or satiety responses
• Sensory stimulation supports engagement without pressure

Appetite Dysregulation and Eating Challenges

Appetite dysregulation is a contributing factor in conditions such as diabetes and Dementia and Alzheimer’s disease. For many individuals, eating challenges stem from neurological or cognitive barriers, not a lack of food availability or encouragement. Traditional interventions often overlook the sensory experience of eating, where smell plays a critical role.

What the Research Says About Scent and Appetite

A comprehensive review of studies published across PubMed and Web of Science examined how essential oils and fragrant compounds influence appetite and energy regulation.

Key Research Findings:

• Certain scents increase appetite, while others suppress appetite
• Effects are mediated through:
  • Leptin resistance
  • Sympathetic and parasympathetic nervous system activity
  • Hypothalamic neuropeptides such as NPY, AgRP, POMC, and CART
• Fragrance memory and cognitive association play a significant role in appetite regulation

While most studies were conducted using controlled models, the findings strongly support the therapeutic potential of scent-based interventions, particularly when adapted thoughtfully for human care settings.

How Smell Therapy Works in Real-World Care

Smell therapy is not about forcing eating — it’s about creating safety, familiarity, and engagement.

In practice, scent therapy can:

• Stimulate appetite through comforting food-associated aromas
• Reduce anxiety and resistance at mealtimes
• Support individuals who can no longer eat but still crave sensory connection
• Enhance social interaction and conversation around food

At Smelling Pink, we integrate scent therapy into:

• Recreation programming
• Memory care routines
• Sensory engagement activities
• Education for care teams

What to Expect From Smell Therapy Programs

Smell therapy should always be:

• Intentional, not overwhelming
• Aligned with occupational health standards
• Adaptable to individual needs

Smelling Pink programs focus on:

• Low-cost implementation
• Inclusive access (regardless of diet or ability)
• Research-informed scent selection
• Staff education and confidence

FAQ — Smell Therapy and Appetite Support

Does smell therapy really help with appetite?

Yes. Research shows scent can influence hunger signals, emotional memory, and engagement — all key factors in eating behaviour.

Is smell therapy safe for individuals with dementia?

When delivered properly, scent therapy is gentle, non-invasive, and adaptable for cognitive sensitivities.

Can smell therapy replace traditional nutrition support?

No. Smell therapy complements existing care by addressing sensory and emotional barriers to eating.

What scents are commonly used to stimulate appetite?

Food-associated and familiar scents such as vanilla, cinnamon, coffee, citrus, and baked goods are often effective.

Ready to explore how smell therapy can support appetite and engagement? Contact Smelling Pink to learn more about training, programs, and research-informed scent solutions.

Related Articles or Services

• Why Essential Oils Matter in Scent Therapy
• Scent and Childhood Anxiety: A Mother’s Journey Through Smell
• Sharp Rise in Memory Problems Among Adults

About the Author

Tracy Pepe
Founder of Smelling Pink Inc., Tracy Pepe is a scent education specialist and advocate for sensory-based care innovation. Her work focuses on translating research into practical, dignified solutions for individuals living with dementia and cognitive challenges.

Watch Tracy’s TED Talk: “How the Nose Knows”