Fact Check: Are flies attracted to light?

Fact Check: Are flies attracted to light?

Published May 8, 2025
VERDICT
Mostly True

# Are Flies Attracted to Light? A Detailed Examination ## Introduction The claim that flies and other insects are attracted to light has been a long-...

Are Flies Attracted to Light? A Detailed Examination

Introduction

The claim that flies and other insects are attracted to light has been a long-standing assumption in both scientific and popular discourse. Recent research, however, suggests that the relationship between flying insects and artificial light may be more complex than previously thought. This article explores the nuances of this claim, drawing on various studies and expert opinions to provide a comprehensive overview.

What We Know

  1. Insect Attraction to Light: Traditional views held that insects, including flies, are simply drawn to bright lights. However, recent studies indicate that this attraction may be more about confusion rather than a direct draw to light sources. Specifically, researchers have suggested that artificial lights can disrupt the innate navigational systems of flying insects, leading them to erratically circle around light sources instead of approaching them directly 510.

  2. Types of Light Sources: Different types of light sources attract varying numbers of insects. A study found that LED lights attracted significantly fewer insects compared to other light sources, including incandescent bulbs 1. This suggests that the type of light may influence the degree of attraction.

  3. Mechanisms of Attraction: Theories explaining why insects are drawn to light include lunar navigation and the idea that they mistake artificial lights for natural celestial bodies. This confusion can lead to erratic flying patterns that ultimately trap them near the light source 27.

  4. Impact of Light Pollution: Light pollution has been identified as a contributing factor to the decline of certain insect populations, including fireflies. The constant exposure to artificial light can lead to exhaustion and increased predation, further impacting insect diversity 6.

  5. Experimental Evidence: Various studies have employed different methodologies to assess insect behavior around light sources. For instance, high-resolution cameras have been used to observe the flight patterns of insects near artificial lights, revealing that they often do not fly directly toward the light but instead engage in looping behaviors that can trap them 10.

Analysis

The evidence surrounding the claim that flies are attracted to light is multifaceted and requires careful evaluation of the sources.

  • Credibility of Sources: The studies referenced, such as those published in peer-reviewed journals like Science and Nature, generally have high credibility due to their rigorous methodologies and the reputation of the journals. However, articles from popular media outlets like AP News and PBS, while informative, may simplify complex scientific findings for broader audiences, potentially leading to misinterpretations 59.

  • Potential Bias: Some sources may have inherent biases based on their funding or the interests of their authors. For instance, studies funded by organizations focused on environmental conservation may emphasize the negative impacts of light pollution more than studies from commercial entities that produce lighting technologies.

  • Methodological Considerations: The methodologies employed in these studies vary significantly. Some rely on observational data, while others use experimental setups with controlled variables. The reliability of the conclusions drawn from these studies can depend heavily on the robustness of their methodologies. For example, studies using high-resolution cameras provide detailed insights but may not capture the full range of insect behaviors in different environments 7.

  • Conflicting Evidence: While many studies support the idea that artificial light confuses insects, there are still gaps in understanding the full scope of this phenomenon. For instance, not all insects respond the same way to light, and factors such as species, environmental conditions, and the type of light can lead to different outcomes 8.

Conclusion

Verdict: Mostly True

The claim that flies are attracted to light is mostly true, but it is nuanced by recent research indicating that this attraction may stem more from confusion than a straightforward draw to light sources. Key evidence supporting this verdict includes studies showing that artificial lights disrupt the navigational systems of insects, leading to erratic flight patterns rather than direct attraction. Additionally, the type of light source plays a significant role in the degree of attraction, with variations observed between different lighting technologies.

However, it is important to acknowledge the limitations in the available evidence. The methodologies of studies vary, and not all insects respond uniformly to light, which introduces uncertainty into the generalization of findings. Furthermore, the potential biases of sources and the simplification of complex scientific concepts in popular media can lead to misinterpretations.

Readers are encouraged to critically evaluate information and consider the complexities surrounding the relationship between insects and light, recognizing that while the claim holds merit, it is not without its exceptions and caveats.

Sources

  1. Experimentally comparing the attractiveness of domestic lights to ... NCBI
  2. Why flying insects gather at artificial light PubMed
  3. Turning Ultraviolet Light Traps On and Off Increases Their ... NCBI
  4. Why flying insects gather at artificial light - Nature Nature
  5. Are insects drawn to light? New research shows it's confusion, not ... AP News
  6. Fatal attraction to light at night pummels insects | Science - AAAS Science
  7. Why Are Flying Insects 'Attracted' to Lights? Scientists May Finally ... Smithsonian Magazine
  8. Why Insects Are Attracted to Light at Night | Scientific American Scientific American
  9. Are insects drawn to light? New research shows it's confusion ... PBS
  10. Like a moth to a flame: Science finally explains why insects flock to ... Mongabay

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Think of it like your phone freezing: all the apps are still there, but none of them open when you tap. Research calls this autistic burnout when it happens in a longer, chronic cycle—linked to masking (Hull et al., 2017; Raymaker et al., 2020). Masking is the art of “performing normal” so well that non-autistic people think you’re fine. The issue is that it eats through your energy reserves like a car idling in traffic with the A/C on full blast (Mantzalas et al., 2022). Eventually, one hard conversation can tip you from functional to frozen. And here’s where couples therapy meets neuroscience: physiological flooding—the body’s fight/flight/freeze switch—is a known relationship killer (Malik et al., 2019; Gottman Institute, 2024). In other words, for some autistic partners, flooding may tend to show up sooner, last longer, and is more likely to pull the plug on speech entirely. The Danger Loop in Marriage Autistic partner goes non-verbal — brain says “nope.” Non-autistic partner reads it as avoidance — brain says “attack.” Pressure increases — “Just say something.” Shutdown deepens — and now you’ve both lost. Do that a few hundred times and you’ll start conflating a physiological response into a moral failing. That’s the real marriage-killer. The Protocol: Three Phases, Zero Guesswork This is where we get practical. You can’t “love away” a temporary shutdown, but you can stop it from turning into World War III. Before: Build the Net Name the state. Agree on a phrase or signal ( I call this a couple code)—such as “words offline,” “shutdown,” a hand over the heart. The point is to make the invisible visible. The Shutdown Card. A literal card that says: I can’t speak right now. Please lower lights, reduce sound, give me X minutes. I promise I will circle back. The Pause Rule. Require a minimum of 20 minutes before resuming any tough talk. Autistic partner may need 90+. Agree ahead of time. Downgrade Kit. the usual gear; earplugs, soft light, weighted blanket, fidget, a quiet room. You know, human decency in object form. Reduce Daily Load. Avoid heavy talks right after work or big social events. Chronic overload makes a nervous shutdown more probable. During: Do Less, Better Autistic Partner: Give the signal. Exit stimulation. Switch channels if possible (text, notes app, yes/no cards). Send a short pre-written message: “Safe, can’t talk, back at 8:15.” Non-Autistic Partner: Acknowledge once—“Got it, I’m with you.” Hold the pause boundary. Lower stimuli. Go regulate your own nervous system—walk, journal, pet the dog. Don’t rehearse comebacks. Both: Avoid sarcasm, interrogation, ultimatums. Nothing lengthens a shutdown like moral outrage. After: Close the Loop Check in: “Are you ready to talk, or should we start in text?” Debrief: Identify triggers and what helped. Solve the actual problem. 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F., et al. (2023). The lived experience of meltdowns for autistic adults. Autism, 27(7), 1787–1799. https://doi.org/10.1177/13623613221145783 Malik, J., et al. (2019). Emotional flooding in response to negative affect in romantic relationships. Journal of Couple & Relationship Therapy, 18(4), 327–349. https://doi.org/10.1080/15332691.2019.1641188 Gottman Institute. (2024, March 4). Making sure emotional flooding doesn’t capsize your relationship. Retrieved from https://www.gottman.com/blog/making-sure-emotional-flooding-doesnt-capsize-your-relationship/

Detailed fact-check analysis of: Autistic Non-Verbal Episodes in Marriage: Why Words Vanish Sometimes and What to Do About It Neurodiverse Couples Tuesday, august 12, 2025. Here’s the scene: You’re in the middle of a conversation with your spouse. Maybe the topic is small (“Did you pay the water bill?”) or monumental (“Are we happy?”). And then—without warning—your autistic partner’s voice disappears. No yelling, no slammed doors. Just… gone. You’re left holding the conversational steering wheel while they’ve quietly climbed into the trunk. If you’ve never lived with high-functioning autism, this can be tragically misconstrued as stonewalling or contempt. It isn’t. It’s just neurology pulling the emergency brake. Why This Happens: The Science Without the Lab Coat Smell For autistic adults, losing speech under stress is often a shutdown—a form of nervous system overload that knocks language production offline. Think of it like your phone freezing: all the apps are still there, but none of them open when you tap. Research calls this autistic burnout when it happens in a longer, chronic cycle—linked to masking (Hull et al., 2017; Raymaker et al., 2020). Masking is the art of “performing normal” so well that non-autistic people think you’re fine. The issue is that it eats through your energy reserves like a car idling in traffic with the A/C on full blast (Mantzalas et al., 2022). Eventually, one hard conversation can tip you from functional to frozen. And here’s where couples therapy meets neuroscience: physiological flooding—the body’s fight/flight/freeze switch—is a known relationship killer (Malik et al., 2019; Gottman Institute, 2024). In other words, for some autistic partners, flooding may tend to show up sooner, last longer, and is more likely to pull the plug on speech entirely. The Danger Loop in Marriage Autistic partner goes non-verbal — brain says “nope.” Non-autistic partner reads it as avoidance — brain says “attack.” Pressure increases — “Just say something.” Shutdown deepens — and now you’ve both lost. Do that a few hundred times and you’ll start conflating a physiological response into a moral failing. That’s the real marriage-killer. The Protocol: Three Phases, Zero Guesswork This is where we get practical. You can’t “love away” a temporary shutdown, but you can stop it from turning into World War III. Before: Build the Net Name the state. Agree on a phrase or signal ( I call this a couple code)—such as “words offline,” “shutdown,” a hand over the heart. The point is to make the invisible visible. The Shutdown Card. A literal card that says: I can’t speak right now. Please lower lights, reduce sound, give me X minutes. I promise I will circle back. The Pause Rule. Require a minimum of 20 minutes before resuming any tough talk. Autistic partner may need 90+. Agree ahead of time. Downgrade Kit. the usual gear; earplugs, soft light, weighted blanket, fidget, a quiet room. You know, human decency in object form. Reduce Daily Load. Avoid heavy talks right after work or big social events. Chronic overload makes a nervous shutdown more probable. During: Do Less, Better Autistic Partner: Give the signal. Exit stimulation. Switch channels if possible (text, notes app, yes/no cards). Send a short pre-written message: “Safe, can’t talk, back at 8:15.” Non-Autistic Partner: Acknowledge once—“Got it, I’m with you.” Hold the pause boundary. Lower stimuli. Go regulate your own nervous system—walk, journal, pet the dog. Don’t rehearse comebacks. Both: Avoid sarcasm, interrogation, ultimatums. Nothing lengthens a shutdown like moral outrage. After: Close the Loop Check in: “Are you ready to talk, or should we start in text?” Debrief: Identify triggers and what helped. Solve the actual problem. No conflict gets left to rot in the corner. Spot burnout early. If shutdowns start clustering, it’s time to reduce demands, not double them. How This Isn’t Stonewalling Stonewalling is a choice. Shutdown is a lockout. Stonewalling says, “I won’t talk to you.” Shutdown says, “I can’t talk to you yet, but I will.” The key difference? Repair intention. A shutdown protocol builds that right into the process. The Ten-Minute At-Home Drill Co-create your signal and card. Agree on a pause window. Pack the downgrade kit. Rehearse the exchange (“Got it, I’m with you.”). Check in weekly to tweak the system. Remember, you’re not aiming for zero shutdowns. You’re aiming for shorter, kinder, safer ones. Why This Works Because it matches lived autistic experience (Raymaker et al., 2020; Lewis et al., 2023). Because it honors nervous system limits instead of punishing them (Malik et al., 2019). Because it lets both partners keep their dignity and still solve the problem. In other words: you’re building a marriage that can survive the occasional moments when the words are gone for the time being. Be Well, Stay Kind, and Godspeed. REFERENCES: Hull, L., Mandy, W., Lai, M.-C., Baron-Cohen, S., Allison, C., Smith, P., & Petrides, K. V. (2017). “Putting on my best normal”: Social camouflaging in adults with autism spectrum conditions. Autism, 21(5), 611–622. https://doi.org/10.1177/1362361316671012 Raymaker, D. M., Teo, A. R., Steckler, N. A., Lentz, B., Scharer, M., Delos Santos, A., … & Nicolaidis, C. (2020). “Having all of your internal resources exhausted beyond measure and being left with no clean-up crew”: Defining autistic burnout. Autism in Adulthood, 2(2), 132–143. https://doi.org/10.1089/aut.2019.0079 Mantzalas, J., Richdale, A. L., Adikari, A., Lowe, J., & Dissanayake, C. (2022). What Is Autistic Burnout? A thematic analysis of posts on two online platforms. Autism in Adulthood, 4(1), 52–65. https://doi.org/10.1089/aut.2021.0079 Lewis, L. F., et al. (2023). The lived experience of meltdowns for autistic adults. Autism, 27(7), 1787–1799. https://doi.org/10.1177/13623613221145783 Malik, J., et al. (2019). Emotional flooding in response to negative affect in romantic relationships. Journal of Couple & Relationship Therapy, 18(4), 327–349. https://doi.org/10.1080/15332691.2019.1641188 Gottman Institute. (2024, March 4). Making sure emotional flooding doesn’t capsize your relationship. Retrieved from https://www.gottman.com/blog/making-sure-emotional-flooding-doesnt-capsize-your-relationship/

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