A recent study indicates that individuals may be able to decelerate their biological aging process by consuming up to four cups of coffee daily. Published in the BMJ Mental Health journal, the research revealed that individuals with severe mental illness who adhered to this coffee intake level could potentially gain an additional five biological years compared to non-coffee drinkers.
However, individuals who exceeded five cups of coffee per day did not experience the same benefits. The study attributed this phenomenon to the powerful antioxidants present in coffee, which were observed to elongate telomeres situated at the ends of chromosomes.
Telomeres act akin to the plastic tips on shoelaces, as per News Medical. Coffee has been known to reduce oxidative stress in the general populace, thereby slowing down biological aging processes like telomere shortening.
Telomeres naturally shorten with age, but individuals with major psychiatric disorders, such as psychosis, schizophrenia, and bipolar disorder, often undergo an accelerated shortening process.
The study evaluated the impact of coffee consumption on telomere length in individuals with these mental conditions. The findings indicated that consuming up to four cups of coffee daily was linked to longer telomeres, equivalent to a biological age five years younger than that of non-coffee drinkers.
While the study was observational in nature, establishing definitive cause and effect relationships was not possible. Nevertheless, researchers suggested that the well-documented health benefits of coffee could be a plausible explanation.
The researchers emphasized that “telomeres are highly sensitive to oxidative stress and inflammation, underscoring how coffee consumption might help preserve cellular health in a population predisposed to an accelerated aging rate.”
The study encompassed 436 adult participants, with 259 diagnosed with schizophrenia and the rest experiencing affective disorders like major depressive disorder with psychosis and bipolar disorder.
Individuals with schizophrenia tended to consume more coffee than those with other affective disorders. Additionally, the research revealed that participants who consumed five or more cups daily were notably older than those who consumed fewer cups.
While coffee offers various health advantages, exceeding the recommended daily intake could potentially harm cells and lead to telomere shortening, cautioned the researchers.
Health organizations globally typically recommend limiting daily caffeine consumption to a maximum of 400mg, roughly equivalent to four cups of coffee.
The study had certain limitations, such as not documenting additional caffeine sources participants may have consumed or the types and timing of coffee intake throughout the day.