Fasting improves symptoms in Huntington’s patients
Huntington’s disease has no effective treatment. Yet twenty patients showed measurable improvement after twelve weeks of time-restricted eating. The results are preliminary, but this is the first time the approach has been formally tested in people with Huntington’s.
Huntington’s disease progressively damages movement, memory, and behaviour. It is caused by a mutation in the HTT gene, which encodes the huntingtin protein. Environmental factors may influence when symptoms appear and how quickly they worsen. That made dietary interventions worth exploring. Mouse models had already shown benefits from time-restricted eating. Researchers at Oregon Health and Science University decided to test the approach in people with early-stage Huntington’s.
A six-to-eight-hour eating window
Participants ate within a self-chosen window of six to eight hours per day for twelve weeks. Most chose a window roughly from 10 a.m. to 7 p.m. Sixty percent had overweight or obesity at baseline. Despite this, average weight loss was just 1.12 kilograms, which reassured the team, since unintended weight loss is a known risk in Huntington’s.
The researchers measured symptoms using the Unified Huntington’s Disease Rating Scale, a composite score covering motor function, daily functioning, and cognition. The score improved by an average of 0.50 points. Without treatment, this score typically declines by approximately one point per year in early-stage disease. Two cognitive tests showed clear improvement. The motor score improved modestly, but the effect did not survive statistical correction for multiple tests in the primary analysis. The study was published in Nature Metabolism.
Too small for firm conclusions
The study had no control group and included only twenty participants. That makes it impossible to attribute the improvement to the eating pattern with certainty. The researchers present the findings as a feasibility study: the protocol proved safe and manageable. Larger controlled trials are needed to determine whether time-restricted eating actually slows disease progression. For longevity science more broadly, this is an interesting signal: metabolic interventions like fasting influence cellular repair processes that are relevant to several neurodegenerative conditions.
Search terms to explore further: time-restricted eating neurodegeneration, huntingtin protein aggregation, metabolic intervention brain disease