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the claim

Exposure to artificial light at night increases the risk of obesity.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that exposure to artificial light at night increases the risk of obesity?

Yes. A 2025 systematic review and meta-analysis of 13 studies (867,647 participants) reports a 14% higher obesity risk in the highest artificial-light-at-night exposure group. Other placed items cover metabolic disease, glucose dysmetabolism, or possible metabolic effects only partially.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 4
Exposure to outdoor artificial light at night increases risk and burden of metabolic disease in Ningxia, China
2023
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Wang, H., Ma, X., Yu, Z., Hu, N., Du, Y., He, X., Pan, D., Pu, L., Zhang, X., Sun, X., & Li, J. (2023). Exposure to outdoor artificial light at night increases risk and burden of metabolic disease in Ningxia, China. doi.org. https://doi.org/10.21203/rs.3.rs-2618565/v1

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More for · 3
Impact of artificial light at night on obesity and overweight: a systematic review and meta-analysis.
2025
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W, T., S, D., & Y, L. (2025). Impact of artificial light at night on obesity and overweight: a systematic review and meta-analysis.. doi.org. https://doi.org/10.1186/s12889-025-25883-3

Effects of artificial light at night on human health: A literature review of observational and experimental studies applied to exposure assessment.
2015
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Cho, Y., Ryu, S., Lee, B. R., Kim, K. H., Lee, E., & Choi, J. (2015). Effects of artificial light at night on human health: A literature review of observational and experimental studies applied to exposure assessment.. doi.org. https://doi.org/10.3109/07420528.2015.1073158

Exposure to artificial lighting at night: from an ecological challenge to a risk factor for glucose dysmetabolism and gestational diabetes? Narrative review
2025
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Zabuliene, L., Milionis, C., Koukkou, E., & Ilias, I. (2025). Exposure to artificial lighting at night: from an ecological challenge to a risk factor for glucose dysmetabolism and gestational diabetes? Narrative review. doi.org. https://doi.org/10.1080/07853890.2025.2477304

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