Daily Coffee May Slow Biological Aging in Mental Illness
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Coffee Consumption and Biological Aging in Severe Mental Illness
Table of Contents
Updated as of December 4,2025,at 18:02:51 PST
Drinking up to 3-4 cups of coffee a day may help slow the biological aging process in people living with severe mental illness. The research suggests this amount of coffee is linked to longer telomeres, wich are indicators of cellular aging, and may provide the equivalent of 5 extra biological years compared with individuals who do not drink coffee, according to findings published in the open access journal BMJ Mental Health on November 29, 2023.
However, the study did not detect these potential benefits when coffee consumption exceeded this level. The 3-4 cup limit aligns with the daily maximum recommended by several major health agencies, including the National Health Service (NHS) in the United Kingdom and the US food and Drug Management (FDA).
Telomeres, Mental Illness, and Why They Matter
Telomeres are protective caps located at the ends of chromosomes, functioning similarly to the plastic tips on shoelaces to prevent fraying. The National Human Genome Research Institute explains that telomeres shorten with each cell division,a natural process associated with aging.
However, this process appears to happen faster in people with major psychiatric conditions such as psychosis, schizophrenia, and bipolar disorder, the researchers note. This accelerated shortening is linked to increased risk of age-related diseases and reduced lifespan. A 2019 review in Biological Psychiatry details the association between telomere length and mental health disorders.
Because telomeres respond to environmental influences, including diet, the team explored whether moderate coffee intake might slow telomere shortening in individuals with serious mental health disorders.Coffee has been linked to various health benefits when consumed in moderation, making it a logical area for inquiry.
Study Participants and Coffee Habits
The study examined 436 adults who were part of the norwegian Thematically Organised Psychosis (TOP) study between 2007 and 2020. Participants had been diagnosed with a first-episode psychosis. Researchers collected data on coffee consumption thru self-report questionnaires.
Participants were categorized into three groups: non-coffee drinkers, moderate coffee drinkers (1-3 cups/day), and heavy coffee drinkers (more than 3 cups/day). Telomere length was measured from blood samples. The study controlled for potential confounding factors such as smoking, diet, and socioeconomic status.
Key Findings
| Coffee Consumption Group | Average Telomere Length (relative to Non-coffee Drinkers) |
|---|---|
| Non-Coffee Drinkers | 1.0 (Baseline) |
