Daily Archives: 4 June 2024

The study demonstrates that having views of green spaces encourages individuals to make healthier food choices

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The allure of natural landscapes often evokes feelings of positivity and a heightened sense of wellbeing among individuals. However, a recent study conducted by INSEAD has shed new light on these verdant vistas, revealing that they can also influence people to make healthier dietary choices. This groundbreaking research provides a fresh perspective on the relationship between nature and our food choices, enriching our understanding of human behaviour.

Published in Communications Psychology, a journal under the Nature umbrella, the research suggests that exposure to natural settings, such as strolling through a park rather than city streets or gazing upon greenery versus an urban panorama, prompts individuals to opt for healthier food options after that.

Pierre Chandon, a co-author of the study and the L’Oréal Chaired professor of marketing at INSEAD, highlights, “Our studies suggest that it was not the urban view that led to unhealthy food choices but rather that nature influenced people to eat healthier.”

Participants were randomly assigned to take a 20-minute walk through a park or bustling Parisian streets in one study segment. Subsequently, all participants were presented with a buffet featuring healthy and less healthy snacks. Despite similar consumption quantities across both groups, those who strolled in the park exhibited a notable preference for more nutritious choices, with 70% of their selections falling into the healthier category, compared to only 39% for the city walkers.

In a more controlled experiment, participants were placed in simulated “hotel rooms” with varying window views: a lush green pasture, a cityscape, or a neutral condition with closed curtains. They were then tasked with selecting a lunch from an in-room service menu offering healthy and unhealthy options. The outcomes mirrored those of the earlier experiment, with individuals afforded a view of nature opting predominantly for more nutritious fare. In contrast, those with urban or obscured views leaned towards less healthy choices.

The genesis of this research stemmed from co-author Maria Langlois’ observation during a 7200-km charity bike ride, where she noticed a bias towards healthier, unprocessed foods among herself and her teammates while traversing natural environments. Langlois, now an assistant professor of marketing at SMU’s Cox School of Business, translated this observation into a series of rigorous field and online studies during her tenure in INSEAD’s PhD program.

Interestingly, the study suggests that not all natural surroundings yield the same effect. Factors such as the environment’s vividness and abundance of greenery could influence outcomes. For example, when natural or urban views are blanketed in snow, they cease to sway food choices.

Further experiments sought to ascertain whether exposure to nature increased preferences for genuinely healthy, natural foods or merely processed foods masquerading as healthy. Participants were presented with three snack options: diet and light, healthy and natural, or indulgent and tasty. Exposure to natural scenery diminished the appeal of diet snacks while significantly shifting preferences from indulgent choices towards more nutritious, natural alternatives.

These transformative findings hold immense potential for promoting healthier dietary habits. Educational institutions, workplaces, and other organisations could harness the power of nature imagery in cafeterias to inspire students and employees to choose healthier options. Similarly, food marketers could integrate natural visual cues to advocate for healthy or natural products, thereby revolutionising how we perceive and choose our food.

Most importantly, this research underscores the pivotal role of urban planning, health professionals, and food marketers. With projections indicating that by 2050, two-thirds of the global population will reside in urban areas, the integration of green spaces into future urban landscapes assumes heightened importance, and your expertise and influence are crucial in this process.

More information: Maria Langlois et al, Experiencing nature leads to healthier food choices, Communications Psychology. DOI: 10.1038/s44271-024-00072-x

Journal information: Communications Psychology Provided by INSEAD Asia Campus

Replacing red meat with herring or sardines could potentially save up to 750,000 lives annually by 2050

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The researchers posit that adopting a diet rich in marine forage fish could prove particularly advantageous for low and middle-income countries, where these fish are abundant and economically accessible. This dietary shift could be instrumental in mitigating the significant burden of heart disease prevalent in such regions. They highlight mounting evidence associating the consumption of red and processed meats with heightened risks of non-communicable diseases (NCDs), which accounted for approximately 70% of global deaths in 2019. Among these NCDs, coronary heart disease, stroke, diabetes, and bowel cancer constituted nearly half of the toll, with coronary artery disease being the predominant contributor.

Marine forage fish emerge as a promising dietary alternative due to their rich content of omega-3 long-chain polyunsaturated fatty acids (DHA and EPA), calcium, and vitamin B12. These nutrients are crucial for cardiovascular health, potentially aiding in the prevention of coronary heart disease. Moreover, forage fish boasts the lowest carbon footprint among animal food sources, underscoring their environmental sustainability. However, despite their nutritional and ecological benefits, a substantial portion of the forage fish catch, primarily from regions grappling with food insecurity and malnutrition, is diverted towards fishmeal and fish oil production for fish farming, catering predominantly to affluent consumers.

Recognising the potential of forage fish to alleviate the global burden of disease, the researchers embarked on a comprehensive analysis. They devised four distinct scenarios, each reflecting a different approach to forage fish allocation globally. These scenarios aimed to evaluate the efficacy of substituting red meat with forage fish, considering projected red meat consumption trends and historical forage fish catch data. The scenarios ranged from prioritising domestic supply to equitably distributing forage fish to regions with suboptimal fish intake levels.

Their analysis yielded promising results, suggesting that widespread adoption of forage fish consumption could yield substantial public health benefits by mitigating the incidence of coronary heart disease and other diet-related illnesses. By preventing between half a million and 750,000 deaths from dietary-related diseases by 2050, particularly coronary heart disease-related fatalities, and averting 8–15 million disability-adjusted life years (DALYs), predominantly in low—and middle-income countries, this approach demonstrates considerable potential.

However, the researchers acknowledge the limitations posed by the finite supply of forage fish, emphasising that it cannot entirely replace red meat consumption. Nevertheless, by augmenting daily per capita fish intake towards recommended levels and reducing deaths from coronary heart disease, stroke, diabetes, and bowel cancer by an estimated 2% by 2050, forage fish integration into diets presents a viable strategy for improving public health outcomes.

Among the four scenarios explored, prioritising the allocation of forage fish to regions with lower fish consumption levels emerged as the most effective approach for reducing the global burden of disease. This strategy underscores the importance of targeting interventions towards populations with the greatest need, predominantly situated in low and middle-income countries. Furthermore, for landlocked nations devoid of direct access to seafood, such as Mongolia and several African countries, expanding global marketing and trade in forage fish becomes imperative to facilitate access to this nutritious food source.

Despite the theoretical promise of forage fish, the researchers acknowledge various barriers hindering their widespread adoption. Challenges such as fishmeal and oil processing, overfishing, climate change impacts, and cultural acceptance necessitate a multi-sectoral policy approach to overcome. Suggestions include prioritising access to affordable fish, promoting nutrient-rich microalgae as fish feed, and implementing culturally tailored interventions to foster healthy dietary habits and awareness.

Moreover, advocating for consumer education initiatives, such as climate change impact labels on food items and highlighting the nutritional value of forage fish, could facilitate the transition away from red meat consumption. By combining policy interventions, community engagement, and educational campaigns, stakeholders can synergistically work towards realising the health and environmental benefits of integrating forage fish into dietary patterns, thereby contributing to improved public health outcomes globally.

More information: Shujuan Xia et al, Unlocking the potential of forage fish to reduce the global burden of disease, BMJ Global Health. DOI: 10.1136/bmjgh-2023-013511

Journal information: BMJ Global Health Provided by The BMJ