Canadians spend about 90 percent of the winter indoors. That makes the indoor space a big factor for health. A bad room layout increases stress whereas a good layout can help people stay calm and get work done. Designers now mix building science with basic comfort. They pick safe paints or hang fine art prints to improve a room. These choices make a house or office feel more healthy and liveable.

To build a healthy room, you must look at light, sound and materials. Here are five ways design affects health.

1. Maximizing Natural Light and Circadian Rhythm Support

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Natural light is a top priority for a healthy interior. Our bodies run on an internal clock called the circadian rhythm, which manages sleep and energy. Sunlight keeps that clock running right. When a building is too dark or the windows are too small, people inside get tired and have trouble sleeping.

The Role of Vitamin D and Serotonin

Sunlight triggers serotonin in the brain, which helps stabilize your mood. This matters a lot in Canada because our winter days are so short. Missing out on light can cause Seasonal Affective Disorder (SAD). Designers try to capture as much daylight as possible. Some common ways include:

Large-scale glazing – High-performance windows that allow maximum light while maintaining thermal efficiency.

Light shelves – Architectural elements that reflect sunlight deeper into a room.

Strategic mirror placement – Using reflective surfaces to bounce light into darker corners.

Dynamic Lighting Systems

When it gets dark, artificial lights take over. Many new buildings use smart LED systems. These lights change colour during the day. In the morning, they show a cool blue light to keep people awake. At night, they switch to a warm orange tone. This change helps the body go to rest. Good lighting also cuts down on screen glare to stop headaches.

2. Managing Acoustic Comfort and Sound Environments

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Sound changes stress levels, but people often forget about it. When a room has too many echoes, it is hard to hear. This causes acoustic fatigue. Sound bounces off hard floors, concrete and glass. Too much background noise raises cortisol a stress hormone.

NRC and Sound Absorption

Designers check the Noise Reduction Coefficient of different materials. The goal is to stop sounds from echoing. If a room is too loud, small noises become big distractions. Designers use soft materials to absorb the sound. Ways to fix noise include using acoustic ceiling baffles, soft wall coverings and underfloor insulation.

The Impact of Quiet Zones

Designers now create quiet zones in homes and offices. These areas use extra insulation to block out noise. This helps mental health. A space where you can think without distractions gives the brain a chance to rest. Even a small noise reduction can lower the heart rate. Good sound control lets people manage their environment better.

3. Utilizing Breathable Finishes and Tactile Materials

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The materials we touch and the air we breathe matter. Many common building materials have VOCs. These chemicals leak from paints, glues and carpets into the air, contributing to Sick Building Syndrome. This leads to headaches and low energy.

Air Quality and Non-Toxic Finishes

New designs use breathable materials. These let air and moisture pass through the walls. When moisture gets stuck, mould grows. Mould ruins indoor air quality. Designers prefer materials like:

Mineral-based paints – These use natural minerals and have almost no chemicals.

Natural clay plasters – Clay absorbs extra moisture to balance room humidity.

Untreated wood and stone – These materials skip heavy chemical sealants.

The Importance of Haptic Feedback

People like touching natural textures. Plastic feels different from real wood. Natural materials feel solid and grounded. Items like wool, linen and wood add warmth to a room. They also last a long time. Plastic breaks down quickly, but wood and stone age well. This makes them good choices for long-term use.

4. Applying Biophilic Design and Earthy Colour Palettes

Biophilic design brings nature indoors to lower stress. It is based on the idea that humans have a natural bond with the outdoors. Bringing this back is a fast way to improve mood. It involves more than just plants. It uses colours and patterns found in nature.

Psychological Effects of Earthy Tones

Colour is a tool to manage how people feel. Designers are moving away from bright white or dark grey, which can feel cold. Instead, they use earthy tones to balance the mood. Examples include terracotta and ochre (warm, clay-like colours make a space feel safe); sage green and moss (mimics the forest and is relaxing for the eyes); soft blues (reflect the sky and water to help people stay focused).

Organic Shapes and Fractals

Nature does not have many straight lines. Most things are curved or irregular. Designers use organic shapes in furniture to make a room feel fluid. They also use fractals, which are repeating patterns found in leaves or snowflakes. The human brain processes these patterns easily. When we see these shapes indoors, our nervous system relaxes. This biological reflex lowers stress.

5. Building Emotional Connection Through Artwork and Decor

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The final step is the emotional side of a room. A building can have clean air and good light, but an empty room makes people unhappy. Adding personal items turns a building into a home. Decor gives the eyes a place to rest.

Visual Comfort and Stress Reduction

Artwork provides soft fascination. This is when you look at something interesting that does not tire out your brain. It allows the mind to wander and rest. In wellness design, art is picked to help calm the mind:

Landscape imagery – Photos or paintings of nature reduce heart rates.

Personalized prints – Elements that reflect the occupant’s history or values create a sense of belonging.

Curated galleries – Arranging visual elements in a balanced way creates a sense of order.

Adding Personality and Warmth

A healthy room should reflect the personality of the people who live there. Art helps connect plain walls to real life. Good quality prints and natural decor add texture and interest. This makes it easier for people to handle stress. When someone feels at home in their space, they feel more satisfied. These choices support long-term health.

Images from Depositphotos