Italian Study Finds Open-Label Placebo Improves Memory and Physical Function in Seniors
A recent Italian study conducted by researchers at Università Cattolica del Sacro Cuore in Milan explored whether placebo pills, containing no active ingredients, could enhance memory and physical performance in healthy older adults. Published in the International Journal of Clinical and Health Psychology, the study involved 90 participants aged in their senior years, randomly assigned to three groups: one received no treatment, the second was given placebo pills described as health supplements, and the third was explicitly informed they were taking placebo pills with no active substances.
Over three weeks, participants took the pills daily and underwent tests measuring memory, attention, physical function, stress, fatigue, mental well-being, self-efficacy, and sleep quality before and after the trial. Surprisingly, the group aware they were taking placebos showed the most significant improvements, including a notable reduction in stress levels and enhanced short-term memory. Both placebo groups demonstrated cognitive and physical gains, with physical performance improving by about 7% in the group believing they took real supplements and 9.2% in the open-label placebo group. Cognitive test improvements ranged from 6.9% to 21.5%, comparable to gains seen in cognitive training or exercise programs.
The researchers attribute these effects to psychological mechanisms such as positive expectations, increased body awareness, anxiety reduction, and altered health perceptions, which may activate neural and hormonal pathways influencing function. Professor Francesco Panini, a lead researcher, emphasized the significant mind-body connection affecting aging, cognition, and physical abilities.
While the study is preliminary and calls for larger-scale research, the authors suggest that open-label placebos, being safe, inexpensive, and ethically acceptable, could become a valuable tool in promoting healthy aging and improving quality of life among older adults.
