Study Links Multiple Medications in Seniors to Increased Mortality Risk

A recent study has revealed that older adults taking five or more prescription medications have a considerably higher risk of death compared to those on fewer drugs. This research, published in the Journal of the American Geriatrics Society, underscores the growing concerns surrounding polypharmacy—the term used for individuals utilizing multiple prescriptions daily—and its long-term impact on aging populations.

The study, spearheaded by Dr. Alexander Chaitoff from the University of Michigan School of Medicine, examined national survey data from 7,828 adults aged 65 and older collected between 1999 and 2016. Participants’ medication usage was confirmed through direct inspections of their prescription bottles over the previous month, and they were followed for an average of 8.5 years.

Over half of the participants, precisely 54.3%, fell into at least one category deemed as high risk for medications. The largest cohort included older adults using five or more prescription drugs, hence the term polypharmacy.

The findings indicated that a significant 37.6% of those studied consumed medications considered dangerous for older individuals, such as those potentially increasing confusion or fall risks. Furthermore, 11.4% were on combinations of drugs known to cause serious interactions.

Notably, after accounting for various health factors and underlying conditions, the data showed that taking five or more prescriptions was associated with a 38% rise in overall mortality risk. Additionally, for each extra prescription, there was a correlating 7% increase in the risk of death.

Experts from the Cleveland Clinic pointed out that managing multiple medications often escalates the likelihood of side effects, drug interactions, and accidental overdoses, particularly as older adults’ liver and kidney functions decline, making drug processing less efficient.

The total number of medications a participant was taking emerged as the strongest independent predictor of mortality. This persisted even after considering interactions between drugs and potentially inappropriate prescriptions.

These insights could aid healthcare providers in identifying patients who may benefit from deprescribing, or carefully reducing or eliminating unnecessary medications. However, the authors did acknowledge several limitations, particularly that the research focused solely on older adults living in the community, excluding those in nursing homes or assisted living facilities.

It’s also worth noting that the study relied on a single snapshot of medication use over 30 days; hence, it indicates associations rather than direct causation linking prescriptions to increased mortality risk. Moreover, since the documentation was taken at the study’s outset, subsequent changes in prescriptions or the evolving health conditions of participants were not tracked.

Medical professionals emphasize that observational studies like this demonstrate correlations rather than proving direct cause-and-effect relationships. Many older adults on multiple prescriptions often have complex and severe health issues that themselves carry higher risks of mortality.