New Article March 4, 2026

 

Physical Exercise and Depression in Older Adults

A Green Aging Perspective

Why depression in older adults matters

Depression is one of the most common mental health problems affecting older adults. It is not a normal part of aging, yet it often goes unnoticed or untreated.

Many older adults experience depression because of major life changes such as:

• Loss of a spouse or close friends

• Reduced independence or mobility

• Chronic illness or pain

• Social isolation

• Financial or housing stress

Depression affects much more than mood. It can also influence:

• Energy and motivation

• Sleep quality

• Memory and concentration

• Physical activity

• Social relationships

Over time, depression can reduce quality of life, independence, and overall health.

This is why addressing depression is an important goal in the Green Aging framework, which focuses on improving quality of life through lifestyle and environmental approaches.

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Why physical exercise is a powerful tool

Among the many treatments available for depression—such as medication and psychotherapy—physical exercise is one of the safest and most broadly beneficial options.

Scientific studies consistently show that exercise can:

• Reduce symptoms of depression

• Improve mood and emotional well-being

• Increase energy and motivation

• Improve sleep quality

• Strengthen physical health

A large recent scientific review analyzing many clinical trials concluded that exercise programs significantly reduce depressive symptoms in older adults.

Importantly, exercise also produces many additional benefits beyond mood improvement, making it particularly valuable in older age.

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Types of exercise that may help depression

Different forms of exercise can improve mood. The best choice often depends on an individual's health, preferences, and physical ability.

1. Aerobic exercise

Examples:

• Walking

• Cycling

• Swimming

• Light jogging

Benefits:

• Improves heart and lung health

• Increases energy levels

• Helps regulate sleep

• Supports weight control

Walking is often the simplest and most accessible starting point for many older adults.

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2. Strength or resistance exercise

Examples:

• Light weight training

• Resistance bands

• Body-weight exercises (chair stands, wall push-ups)

Benefits:

• Builds muscle strength

• Maintains independence in daily activities

• Improves balance and stability

• Supports metabolic health

Maintaining muscle strength is particularly important in older age to prevent frailty.

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3. Balance and coordination exercises

Examples:

• Tai Chi

• Qigong

• Balance training

Benefits:

• Improves balance and reduces risk of falls

• Encourages relaxation and mindfulness

• Often performed in groups, increasing social interaction

These activities are especially well suited for older adults.

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4. Flexibility and gentle movement

Examples:

• Stretching programs

• Gentle yoga

• Mobility exercises

Benefits:

• Reduces stiffness and pain

• Improves mobility

• Promotes relaxation

These exercises are often a good starting point for individuals who have been inactive.

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Why exercise improves mood: the underlying mechanisms

Exercise helps reduce depression through several interacting pathways.

1. Brain chemistry

Physical activity stimulates the production of natural chemicals in the brain that support mood and emotional balance.

These include:

• Endorphins (natural mood boosters)

• Serotonin

• Dopamine

These chemicals play an important role in regulating mood.

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2. Brain health and resilience

Exercise also stimulates the production of substances that support brain growth and repair, helping maintain healthy brain connections.

These effects may contribute to:

• Improved mood regulation

• Better cognitive function

• Greater resilience to stress

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3. Reduced inflammation

Chronic low-grade inflammation is increasingly linked with depression.

Regular physical activity can help reduce inflammatory processes, which may improve both mental and physical health.

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4. Stress regulation

Exercise helps regulate the body's stress system.

It can lower stress hormones and improve the body's ability to cope with psychological challenges.

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5. Psychological benefits

Exercise also produces powerful psychological effects.

It can:

• Increase confidence and self-esteem

• Restore a sense of control and purpose

• Provide structured daily activity

• Create opportunities for achievement and progress

These psychological factors are very important in overcoming depression.

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6. Social connection

Many exercise programs involve group participation.

This provides opportunities for:

• Social interaction

• Support from peers

• Reduced loneliness

Social engagement itself is strongly linked to improved mental health in older adults.

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The “stacking” of benefits

One of the most important advantages of exercise is that it produces multiple benefits at the same time.

Exercise can improve:

 

Area of lifeBenefitMental healthReduced depression and anxietyPhysical healthStronger heart, muscles, and bonesSleepImproved sleep qualityBrain healthBetter memory and cognitive functionIndependenceGreater ability to perform daily activitiesSocial lifeIncreased opportunities for connectionSelf-confidenceGreater sense of control and accomplishment

 

Because of this stacking of benefits, exercise fits naturally into the Green Aging framework, which focuses on improving overall quality of life rather than targeting a single medical outcome.

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How much exercise is helpful?

Health organizations generally recommend that older adults aim for:

• 150 minutes per week of moderate activity (such as brisk walking)

plus

• strength and balance activities several times per week

However, it is important to remember that any increase in activity can be beneficial.

For someone who has been inactive, even:

• 10–15 minutes of walking

• light stretching

• gentle balance exercises

can be a meaningful first step.

The most important factor is regular participation over time.

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Exercise in the Green Aging framework

Within the Green Aging concept, exercise is not simply a treatment for depression.

It is part of a broader system that supports:

• physical health

• emotional resilience

• cognitive function

• social engagement

• independence and autonomy

By improving many aspects of life simultaneously, exercise can help older adults maintain a higher level of well-being and quality of life.

 

The Aging Process

• Natural aging is an inescapable process that cannot be completely stopped.

• Aging involves gradual changes in our body, such as loss of strength; reduced hearing and vision; slower memory; and changes in enzymes and hormones.

• Recent study suggest that waves of aging-related changes occur at two distinct points in our life around ages 44 and 60.

Examples of Measures employed to moderate or slow down aging

• Healthy eating and considering botanicals as detailed in the book

• Staying physically active

• Sleeping enough

• Managing stress

• Staying socially active and carrying some meaningful work

• Avoiding  exposure to extreme heat or cold

•  Spending time in natural areas (such as green spaces, parks, water surfaces) and staying away from polluted areas

• Stopping smoking and alcohol drinking

• Avoiding  polluted environments (air and water

Those healthy habits would delay health issues and allow improved quality of life.  As will be explained later, age is expressed in different ways (e.g. chronological, phenological).

 

A brief example of Botanicals