Researchers from Università Cattolica in Milan investigated how mental factors can influence aging.
The study, published in the International Journal of Clinical and Health Psychology, involved 90 healthy older adults who were divided into three groups.
Participants completed a series of tests before and after the trial.
Researchers measured memory, attention, physical performance, stress levels, and overall well-being, according to SciTechDaily.
Also read: After years in cancer research, she no longer eats these foods
Improved results
After three weeks, the results showed improvements in several areas.
Physical performance increased by up to 9.2 percent in some groups. At the same time, scores on cognitive tests improved by between 6.9 and 21.5 percent, depending on the measurement method.
Researchers also recorded reduced drowsiness and lower stress levels among several participants.
According to the researchers, the improvements were significant enough to be comparable to results seen in some studies of physical exercise and memory training.
Also read: "Zombie deer disease" can remain hidden for years without signs of infection
Pills without any effect
The trial included one group that received no treatment and two groups that were given identical pills.
The crucial difference was what participants were told about the pills.
Some believed the pills contained active ingredients, while others knew that the pills had no medical effect.
Nevertheless, both groups experienced improvements.
Also read: Millions could feel the impact of growing drug shortages
In fact, the results showed that participants who knew they were taking a placebo often achieved results that were just as good as, or even better than, those of the other participants.
The study therefore suggests that expectations and mental processes may play a role in memory, physical function, and stress levels among older adults.
Also read: How salmon can affect your heart if you eat it regularly