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‘Blue spaces’ help improve public health

September 7, 2018
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Spending time near water has even greater health benefits than visiting a forest or park, according to researchers. Image: Frederica Diamanta / Unsplash

A post from our partners at Horizon: the EU Research & Innovation Magazine.

Living close to bodies of water such as a river or even a fountain can help improve public health, whilst also reducing medical costs for governments, according to researchers.

There is growing evidence that spending time in the natural environment can foster important mental and physical health benefits, and help prevent illness and reduce medical bills. One study found that people in England made 1.23 billion active trips to parks and woodlands, which was estimated to be worth £2.18 billion in terms of annual health benefits.

Now research by the same team suggests that so-called ‘blue spaces‘ – areas with water features like a river, ocean, spring, or even a fountain in a city centre – could be particularly beneficial.

‘What we find time and time again is that being exposed to blue environments often has even greater (health benefits) than visiting a green space (like a park or forest),’ said Dr Mathew White, an environmental psychologist at the University of Exeter, in the UK, who helped conduct the research.

One reason is that people who take trips to bodies of water are more likely to also go for longer walks or cycles – as well as swimming – which can help lower their risk of developing chronic disease like diabetes, heart disease and cancer. But water can have other benefits too.

‘Blue spaces can directly reduce psychological stress and improve mood,’ said Dr White, who is also a lead researcher in BlueHealth, an EU project examining the relationship between this type of blue infrastructure and people’s health and wellbeing.

The reasons why water is mentally therapeutic may be connected to the open vistas, reflected light and associated soundscapes, according to the researchers. Depression has also been linked to detachment from the natural environment so blue spaces are useful for ‘reducing the negative and improving the positive,’ said Dr White.

The mental and physical benefits of blue spaces may seem obvious to the 200 million people in Europe who live close to the coast. However, to help the general public embrace the full health benefits, it requires specifically designed ways of safely accessing and appreciating blue spaces.

‘One thing we are interested in is how to quantify blue spaces so we can put an economic value on them to justify infrastructure investment,’ said Dr White.

BlueHealth is aiming to gather data to help convince policymakers to invest in blue spaces, particularly in urban areas. They recently conducted an international survey asking 18,000 people about the kinds of activities they do in blue spaces across Europe, in an attempt to determine the implications this has for public health. The results are expected later this year.

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A new coastal amphitheatre in Plymouth, UK, will allow school children to spend more time by the water. Image: BlueHealth

‘Urban acupuncture’ to connect communities to water

BlueHealth is also working on innovative ways to increase public access to blue spaces, from using virtual reality for those physically unable to make the journey to the ocean,  to improving access through local community interventions termed ‘urban acupuncture’.

Urban acupuncture is an urban planning concept that involves working with local communities to make small adjustments to bodies of water to connect the potential physical and mental health benefits to the public. This can include a viewing platform along a lake or a pathway to a river.

Improving access to water, however, does increase risks such as public exposure to flooding, or potential drownings if a blue space is left unsupervised. However, according to Professor Lora Fleming from the University of Exeter and the principal investigator of BlueHealth, ‘natural environments have both risks and benefits’, but you can still improve access to blue spaces with these in mind.

In one of several case studies across Europe, BlueHealth researchers worked with Plymouth City Council on England’s south coast to help regenerate an area along the seafront in an attempt to boost local health and wellbeing. By engaging with local residents and stakeholders, they helped build a small coastal facing amphitheatre and safe playing area for children, which will host special family events and school sessions run by, among others, the local aquarium and wildlife trust.

The researchers also considered the potential impacts of rising sea levels due to climate change and coastal erosion, building the theatre in such a way as to protect it for decades to come.

Projects designed like this can help to connect children with the natural environment for generations and improve their health and wellbeing over their lives, but in order to be successful, local communities need to be involved. ‘Otherwise they won’t use it,’ said Prof. Fleming.

Working with local people when developing blue space access can also bring environmental advantages, according to Professor Sheila Heymans, the executive director of the European Marine Board (EMB), a research think-tank specialising in marine science policy.

She believes that once people begin to appreciate blue spaces more they will want to protect them from pollution, overfishing and poor urban planning. But to design ways of providing safe access to blue spaces that incorporates all these factors will require significant investment, from researching the local needs to choosing a site and then the actual construction.

Supporting human and environmental health through ‘blue thinking’

‘There isn’t a single place where blue spaces are actually coordinated from,’ Prof. Heymans said. ‘Incorporating blue spaces very much depends on one or two people in the local authority.’

Prof. Heymans believes that government policies need to be moulded so that they complement each other and support more ‘blue thinking’ across sectors such as health, environment, tourism, and transportation.

‘Some of the policies and directives in Europe are counterproductive, the habitat and bird directives expect you to save seabirds, but the reduction in discards from the reform of the common fisheries policy will reduce food for seabirds that are dependent on these discards, so different policies can sometimes work at cross purposes,’ said Prof. Heymans.

Policymakers therefore need specific information that can help convince local authorities about the combined potential environmental, economic, social, and health benefits.

The EMB are now working with the Exeter BlueHealth team to coordinate a new project called SOPHIE, which is examining how the marine environment and human health are inextricably linked.

‘There is a link to the health of humans to the health of the oceans,’ said Prof. Heymans. ‘You need to fund interdisciplinary research to make that clear.’

 

More information:

BlueHealth

SOPHIE

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