Hypomagnetic fields extend survival but reduce mobility in a fly model of Parkinson’s disease

“Modulation of magnetic field strength may be a potential therapeutic strategy, particularly in the context of ageing and neurodegenerative disease.”

BUFFALO, NY — October 22, 2026 — A new research paper was published in Volume 18 of Aging on September 23, 2026, titled “Hypomagnetic fields modulate lifespan, physical ability and mitochondrial metabolism in a Pink1 model of neurodegeneration.”

The study found that exposure to extremely weak magnetic fields increased survival in a fruit fly model of Parkinson’s disease while unexpectedly worsening movement ability. The researchers also identified changes in mitochondrial metabolism and free radical production, suggesting that magnetic field strength may influence aging-related biological processes differently depending on an organism’s genetic background.

The research was led by first author Jacob Reed and corresponding author Lisa Chakrabarti, both affiliated with the University of Nottingham. 

Parkinson’s disease is a progressive neurodegenerative disorder associated with the loss of dopamine-producing neurons, impaired movement and mitochondrial dysfunction. Mitochondria generate much of the energy required for cellular function, and defects in their maintenance can contribute to oxidative stress and neuronal damage. Understanding how environmental conditions influence mitochondrial activity may therefore provide insights into neurodegeneration.

The researchers investigated hypomagnetic fields (HMFs), environments in which magnetic field strength is substantially lower than Earth's natural geomagnetic field. Earth's magnetic field typically ranges from 25 to 60 microtesla (μT), while hypomagnetic conditions are generally defined as fields below 5 μT. Although magnetic fields have been studied in relation to animal navigation and cellular metabolism, their influence on neurodegenerative disease remains poorly understood.

The study used Drosophila melanogaster, commonly known as the fruit fly, including a genetically modified strain lacking functional Pink1. This gene plays an important role in mitochondrial quality control through the PINK1/Parkin pathway, which helps identify and remove damaged mitochondria. Loss of Pink1 function produces several features resembling early-onset Parkinson’s disease, including impaired movement, mitochondrial dysfunction and reduced lifespan.

Using a specialized magnetic shielding apparatus, the researchers reduced the surrounding magnetic field to approximately 5 nanotesla (nT), effectively removing most of Earth's natural magnetic field. Healthy wild-type flies and Pink1-deficient flies were exposed to these conditions beginning at either 10 or 20 days of age. The team assessed survival, climbing ability, mitochondrial respiration and free radical formation.

The survival findings revealed an important difference between the two groups. Hypomagnetic exposure increased lifespan by approximately 20% in Pink1-deficient flies, according to the authors' summary. Among flies beginning exposure at 20 days of age, the mortality hazard was significantly reduced compared with those maintained under normal geomagnetic conditions (hazard ratio 0.50; p = 0.003).

In contrast, wild-type flies showed a tendency toward reduced survival under hypomagnetic conditions, although the differences were not statistically significant. These findings indicate that magnetic field reduction does not produce uniform effects across different genetic backgrounds.

Importantly, improved survival did not translate into better physical performance. The researchers evaluated movement using a climbing assay that measures how effectively flies climb after being tapped to the bottom of a container. Hypomagnetic exposure improved climbing ability in healthy flies at several time points but significantly worsened performance in Pink1-deficient flies.

This unexpected result highlights an important distinction between lifespan and health-related function. Although Pink1-deficient flies survived longer under reduced magnetic fields, they experienced more pronounced movement difficulties. The findings suggest that interventions influencing longevity may not necessarily improve physical ability.

To investigate the underlying mechanisms, the researchers examined mitochondrial respiration using high-resolution respirometry. This technique measures oxygen consumption associated with different components of the mitochondrial electron transport system, particularly complexes I and II, which contribute to cellular energy production.

Hypomagnetic exposure significantly increased complex II-supported oxidative phosphorylation in wild-type flies (p = 0.027). A similar increase was observed in Pink1-deficient flies, but the change in isolated complex II activity was not statistically significant. Because complex I dysfunction is associated with PINK1-related abnormalities, the researchers proposed that increased reliance on complex II might partially compensate for impaired mitochondrial function. However, this explanation remains hypothetical.

The researchers also investigated reactive oxygen species (ROS), including free radicals produced during mitochondrial metabolism. Although excessive ROS can damage cellular components, these molecules also participate in signaling pathways involved in stress responses and cellular adaptation.

Using quantum sensors based on nitrogen-vacancy centers in nanodiamonds, the team measured free radical-related changes under different respiratory conditions. Hypomagnetic exposure altered free radical signals in both healthy and Pink1-deficient flies. In the Pink1 model, exposure increased free radical signals during routine respiration but reduced the relative increase observed when mitochondrial energy production was stimulated.

These findings suggest that hypomagnetic conditions may influence how mitochondria respond to changing energy demands. The authors propose that altered ROS signaling and greater reliance on alternative respiratory pathways could contribute to improved survival in Pink1-deficient flies. However, the study did not directly establish that these mechanisms caused the observed lifespan extension.

“We demonstrate that the effects of an HMF are complex and genotype-specific, including an increase in mitochondrial CII activity and associated changes in mitochondrial physiology.”

The results raise questions about whether carefully controlled magnetic environments could eventually be investigated as non-invasive approaches to modifying mitochondrial dysfunction. However, the opposing effects on survival and movement highlight the importance of considering possible functional consequences alongside potential biological benefits.

The study has several limitations. Experiments were performed exclusively in male fruit flies using a specific genetic model and a single near-zero magnetic field configuration. Some mitochondrial analyses involved relatively small sample sizes, and the proposed compensatory mechanisms were not directly established. The research also did not determine whether hypomagnetic exposure prevents neuronal degeneration or improves disease outcomes in mammals or humans.

Future studies will need to investigate how magnetic field strength, exposure timing and duration influence mitochondrial metabolism, oxidative stress and neurological function. Research in additional disease models will be essential before considering potential therapeutic applications.

Overall, the study demonstrates that reducing exposure to Earth's magnetic field can influence survival, movement and mitochondrial physiology in a genotype-dependent manner. By revealing longer survival alongside worsening mobility in a Pink1 model of neurodegeneration, the findings highlight the complex relationship between mitochondrial stress responses and functional aging. They also provide a foundation for further investigation into the biological effects of magnetic environments in Parkinson’s disease and related conditions.

Paper DOI: https://doi.org/10.18632/aging.206424 

Corresponding author: Lisa Chakrabarti - lisa.chakrabarti@nottingham.ac.uk 

Abstract video: https://www.youtube.com/watch?v=em8W24_6wSI

Keywords: hypomagnetic field, diamond quantum sensing, mitochondria, drosophila melanogaster, Parkinson’s disease

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