Iosief Abraha, Joseph M Rimland, Fabiana Mirella Trotta, Giuseppina Dell'Aquila, Alfonso Cruz-Jentoft, Mirko Petrovic, Adalsteinn Gudmundsson, Roy Soiza, Denis O'Mahony, Antonio Guaita, Antonio Cherubini
5 min
This systematic overview aimed to synthesize the evidence on non-pharmacological interventions for managing Behavioral and Psychological Symptoms in Dementia (BPSD), such as agitation, anxiety, and depression. Given the risks associated with psychotropic medications in older adults, the study sought to provide a comprehensive compendium of non-drug alternatives to guide clinical practice.
The authors conducted a systematic overview of 38 systematic reviews and 142 primary studies published between 2009 and 2015. They categorized interventions into four main groups: sensory stimulation (e.g., music, aromatherapy, massage, light therapy), cognitive/emotion-oriented therapies (e.g., reminiscence, validation therapy), behavioral management techniques (e.g., caregiver training, communication skills), and other therapies (e.g., exercise, animal-assisted therapy). The methodological quality of the included reviews was assessed using the AMSTAR checklist.
The review identified a wide range of interventions but found that most lacked robust, consistent evidence. Music therapy emerged as the most effective sensory intervention, showing significant reductions in agitation and anxiety. Behavioral management techniques—specifically those involving supervised training for caregivers or staff in communication and person-centered care—also demonstrated effectiveness in reducing severe agitation, with benefits potentially lasting several months. Conversely, therapies like light therapy, Snoezelen (multisensory stimulation), and animal-assisted therapy yielded inconclusive or non-significant results.
Non-pharmacological interventions are increasingly viewed as the first-line approach for BPSD to avoid the adverse effects of antipsychotics, such as falls, stroke, and increased mortality. This study provides a necessary, albeit cautious, roadmap for clinicians. While music therapy and behavioral management show promise, the field is currently hindered by a lack of standardized taxonomies and inconsistent reporting, highlighting the need for more rigorous, large-scale trials to confirm these benefits.
Objective To provide an overview of non-pharmacological interventions for behavioural and psychological symptoms in dementia (BPSD). Design Systematic overview of reviews. Data sources PubMed, EMBASE, Cochrane Database of Systematic Reviews, CINAHL and PsycINFO (2009–March 2015). Eligibility criteria Systematic reviews (SRs) that included at least one comparative study evaluating any non-pharmacological intervention, to treat BPSD. Data extraction Eligible studies were selected and data extracted independently by 2 reviewers. The AMSTAR checklist was used to assess the quality of the SRs. Data analysis Extracted data were synthesised using a narrative approach. Results 38 SRs and 142 primary studies were identified, comprising the following categories of non-pharmacological interventions: (1) sensory stimulation interventions (12 SRs, 27 primary studies) that encompassed: acupressure, aromatherapy, massage/touch therapy, light therapy and sensory garden; (2) cognitive/emotion-oriented interventions (33 SRs; 70 primary studies) that included cognitive stimulation, music/dance therapy, dance therapy, snoezelen, transcutaneous electrical nerve stimulation, reminiscence therapy, validation therapy, simulated presence therapy; (3) behaviour management techniques (6 SRs; 32 primary studies) and (4) other therapies (5 SRs, 12 primary studies) comprising exercise therapy, animal-assisted therapy, special care unit and dining room environment-based interventions. Music therapy was effective in reducing agitation (SMD, −0.49; 95% CI −0.82 to −0.17; p=0.003), and anxiety (SMD, −0.64; 95% CI −1.05 to −0.24; p=0.002). Home-based behavioural management techniques, caregiver-based interventions or staff training in communication skills, person-centred care or dementia care mapping with supervision during implementation were found to be effective for symptomatic and severe agitation. Conclusions A large number of non-pharmacological interventions for BPSD were identified. The majority of the studies had great variation in how the same type of intervention was defined and applied, the follow-up duration, the type of outcome measured, usually with modest sample size. Overall, music therapy and behavioural management techniques were effective for reducing BPSD.
Sam: And caregiver training?
Alex: That one works through a different mechanism entirely. BPSD is partly driven by how caregivers respond to behavioral episodes — inadvertent reinforcement, escalation, poor communication strategies. Structured training programs teach caregivers to identify antecedents and modify their own responses. You're essentially intervening on the behavioral feedback loop rather than the patient directly. And because the protocol is teachable and auditable, fidelity is easier to maintain and measure.
Sam: That's a meaningful distinction — one intervention targets the patient's neurology, the other targets the care environment.
Alex: Right. And it's why the authors argue the field needs to stop treating "non-pharmacological" as a single category. The mechanism of action, the dose, the delivery context — these all determine whether an intervention is clinically meaningful or just well-intentioned noise.
Sam: So the practical upshot for someone running a care facility is fairly narrow: the evidence supports two specific, high-consistency paths, and the rest requires a much higher tolerance for uncertainty.
Alex: That's the honest read. And the broader implication for the field is clear — generic, underpowered studies that lump heterogeneous protocols under a single label aren't going to move the needle. What's needed are standardized, replicable protocols with pre-specified outcomes, adequate power, and active comparators. Until that infrastructure exists, the gap between what gets marketed and what the evidence supports is going to remain uncomfortably wide.
Sam: It's a useful corrective. "Non-pharmacological" doesn't automatically mean "evidence-based."
Alex: Precisely. And for researchers in this space, that's the gap worth closing. Thanks for listening to ResearchPod.