Today, on the 7th of April, we celebrate World Health Day – a day recognized and celebrated by the United Nations.

Now, we may wonder, or ask, what “World Health Day” has to do with planting trees and nature?

World Health Day reminds us that health is not only preserved and treated in hospitals or clinics, but that it is deeply rooted in the natural world around us. Increasing scientific evidence shows that planting trees, protecting forests, and spending time in nature are powerful, accessible ways to improve both individual and community health.

At the most basic level, we can consider how trees sustain life on our common home, planet Earth. See, trees clean the air by absorbing pollutants and carbon dioxide, helping reduce respiratory illnesses and heat-related stress in urban environments. At the same time, cleaner air and cooler environments are directly linked to lower rates of asthma, cardiovascular disease, and heat exhaustion. But, beyond these environmental benefits, trees also influence our bodies and minds in more subtle (and fascinating) ways.

Research into “forest bathing” (or shinrin-yoku), which is the practice of immersing oneself in a forest environment, has revealed measurable physiological effects! Studies show that time spent among trees can lower stress hormones such as cortisol, reduce blood pressure, and slow heart rate. These changes indicate that the body’s stress-response system is calming down, allowing restorative processes to take over. Even short periods in nature, as little as 20 minutes, can produce noticeable benefits for mental clarity and emotional well-being.

See? Mother Nature is a great doctor, and she takes care of us in so many ways!

Sitting in nature and absorbing the sunlight and natural aromas is beneficial to our well-being

Scientific reviews have confirmed that exposure to forest environments improves a wide range of health outcomes, and controlled studies have found positive effects on immune function, inflammation, anxiety, depression, and cardiovascular health. In some cases, forest exposure has even been linked to improved respiratory and metabolic health, highlighting its role in preventive medicine.

One reason for these benefits lies in the biology of trees themselves. Trees release natural compounds called phytoncides – aromatic molecules that protect them from pests and disease. When humans inhale these compounds, they can enhance immune activity and may even help the body fight infections. This means that simply walking through a forest is not just relaxing, but also a form of natural therapy.

Nature also supports brain health, and emerging research shows that exposure to green environments improves cognitive function, memory, and emotional regulation by influencing brain regions linked to stress and attention. In a world of constant digital stimulation, being in the presence of trees and nature helps restore focus and mental balance.

Thus, we can absorb Mother Nature’s healing properties by simply sitting quietly in nature and doing absolutely nothing. But, if we feel that we need to do something, then we can plant some trees! Planting trees strengthens these benefits for entire communities. More trees mean more green spaces, encouraging physical activity, social connections, and community building, and outdoor time – all of which are known determinants of good health. Urban greenery has been associated with improved mental well-being through reduced noise, better air quality, and stronger social cohesion.

See how happy our friends in India look, after planting a tree?

Another aspect we can consider is traditional healing practices, which rely on the gifts of Mother Nature. Traditional systems of healing, which include Ayurveda, emphasize the deep connection between humans and nature. Ayurveda, an ancient holistic practice originating in India, teaches that balance in the body is achieved through harmony with the natural world. It uses plant-based remedies, mindful routines, and connection to seasonal rhythms to support health. Many Ayurvedic practices, such as using herbs, spending time outdoors, and aligning daily habits with natural cycles, reflect principles now supported by modern science, reinforcing the idea that nature itself can be a powerful source of healing!

Ayurvedic herbs and medicine*

Ultimately, the relationship between human health and trees is reciprocal – meaning, a mutual relationship. When we care for nature, it cares for us. Planting a tree is not only an environmental act, but it is an investment in public health, climate resilience, and future generations. Another way of seeing it, is that when we plant a tree, it can benefit many, many living beings! We should try it – it usually feels really good to plant a tree! And, please remember to tell us about your tree-planting by filling out this form on our website.

So, today, we can consider a simple, but powerful message: step outside, breathe deeply, and reconnect with Mother Nature. Whether it is planting a tree, protecting a forest, or taking a casual walk in a park, these small actions can have profound effects. Health can be discovered in and through Mother Nature!

Warm, healing light, offered by Nature

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References & image sources:

*Ayurveda medicine