Researchers recovered that rising temperatures successful nan U.S. are driving higher depletion of added sugars, chiefly from sodas and stiff desserts. The effect is strongest among low-income and less-educated households, raising wellness risks arsenic ambiance alteration intensifies.
Study: Rising temperatures summation added sweetener intake disproportionately successful disadvantaged groups successful nan USA. Image credit: Dev_Maryna/Shutterstock.com
A caller study published successful Nature Climate Change reports that nan world emergence successful biology somesthesia has disproportionately accrued added sweetener depletion successful U.S. households pinch little socioeconomic position aliases acquisition levels.
Background
Climate change's worldwide changes successful somesthesia and rainfall patterns tin perchance impact individuals' dietary patterns by altering harvest production, harvest nutrient content, seafood abundance and distribution, and livestock wellness and productivity.
Extreme upwind conditions tin substantially change dietary demands, which successful move tin lead to nutrition-related diseases. Hot weather, for instance, often drives individuals to devour chilled aliases stiff beverages for hydration. These beverages incorporate precocious amounts of added sugar, which tin negatively effect health.
Several studies person highlighted antagonistic wellness consequences of consuming excessive added sugar, including obesity, diabetes, metabolic syndrome, cardiovascular disease, and definite cancers.
The dietary guidelines for Americans urge restricting added sweetener intake to little than 10% of regular calories. The American Heart Association recommends moreover little limits: 24 grams for women and 36 grams for men. However, existing grounds indicates that mean intake successful nan U.S. is supra recommended thresholds, pinch susceptible groups already acold exceeding them.
The existent study aimed to analyse nan effect of utmost upwind conditions connected added sweetener intake crossed socioeconomically divers populations successful nan USA betwixt 2004 and 2019. The study analyzed individual-level nutrient acquisition information from 40,000–60,000 US households to find each household's added sweetener intake.
Key findings
The study findings revealed that added sweetener intake increases pinch rising temperature. The summation was mild astatine temperatures beneath 10 °C and 12 °C, followed by a crisp summation betwixt 12 °C and 30 °C. The intake slowed aliases plateaued supra 30 °C, though nan authors be aware that this consequence is based connected very constricted information (only 0.8% of observations astatine specified temperatures).
Among different tested upwind conditions, upwind velocity importantly negatively impacted added sweetener intake, while rainfall had a affirmative impact.
Among various nutrient items pinch added sugar, sweetened beverages accrued sharply betwixt 12 °C and 30 °C, while stiff desserts accrued comparatively slowly. Added sweetener intake from bakery products, oils, and earthy sugars somewhat decreased pinch rising temperature, indicating a imaginable substitution towards much chilled, hydrating items.
Notably, nan study recovered important disparities successful added sweetener intake crossed households pinch different socioeconomic backgrounds. The effect of somesthesia connected added sweetener intake was overmuch stronger successful households pinch little socioeconomic position aliases little acquisition attainment compared to households pinch higher acquisition levels aliases higher income. The researchers besides observed differences by ethnicity and activity environment; for example, Asian households showed nary important response, and those moving outdoors were much delicate to somesthesia changes.
The study conducted simulation analyses to foretell changes successful added sweetener intakes nether early climatic conditions. The simulations, based connected an wide somesthesia summation of 5 °C from 2019 to 2095, indicated that regular added sweetener intake whitethorn summation by astir 3 grams per personification (with an estimated scope of 1.4 – 4.6 grams, depending connected ambiance model), pinch larger increases projected for bluish U.S. regions and successful summertime and autumn.
Study significance
The study finds that nan added sweetener intake complaint successful nan USA increases pinch rising temperature, particularly betwixt 12 °C and 30 °C. The intake complaint tends to diminution astatine temperatures supra 30 °C, apt owed to physiological responses, specified arsenic appetite suppression, though this remains uncertain owed to sparse information astatine utmost power levels.
The study identifies sugar-sweetened beverages, specified arsenic soda and juice, and stiff desserts, specified arsenic crystal pick and gelato, arsenic nan main contributors to accrued added sweetener intake. The real-world scenarios evidenced successful nan study, and nan projections made by nan study, bespeak that nan effect of somesthesia connected added sweetener intake is overmuch stronger successful households pinch mediocre socioeconomic position aliases little acquisition levels.
The little responsiveness of high-income populations to upwind changes whitethorn beryllium associated pinch their acquisition of different micro-environmental temperatures, peculiarly astatine workplaces. The financial expertise of these populations to opt for healthier nutrient and portion choices retired of wellness concerns whitethorn besides warrant their little intakes of added sugar.
The mean regular intake of added sweetener successful susceptible low-income populations already exceeds 10% of nan recommendations from nan 2015–2020 Dietary Guidelines for Americans and almost 20% of nan recommendations from nan American Heart Association. Given specified over-intake, nan existent study highlights nan request to power nutrition and wellness inequalities exacerbated by ambiance change, perchance by identifying cardinal populations and processing targeted interventions.
The study besides highlights nan request for processing much robust policies to trim added sweetener intake, particularly successful sugar-sweetened beverages. Taxation connected specified beverages has been an effective attack to reducing nan acquisition complaint successful immoderate US cities. However, nationwide implementation of specified taxes could look important challenges and delays.
Increasing nationalist consciousness astir nan antagonistic wellness consequences of consuming added sweetener could beryllium a adjuvant approach. This tin beryllium achieved done continuous nutritional acquisition programs and nan preamble of nutrition informing labels connected nutrient products containing precocious levels of added sugar. An accrued consciousness among consumers whitethorn perchance unit industries to respond by reformulating products to trim nan sweetener contented successful beverages.
Importantly, nan authors statement that while nan study is U.S.-focused, nan findings person broader world relevance, since akin climate-driven dietary shifts are apt successful different countries specified arsenic Brazil, South Africa, and Mexico.
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Journal reference:
- He P. (2025). Rising temperatures summation added sweetener intake disproportionately successful disadvantaged groups successful nan USA. Nature Climate Change. doi: https://doi.org/10.1038/s41558-025-02398-8. https://www.nature.com/articles/s41558-025-02398-8