Linkage found between dimension of bodily features and dementia's potential risk
New Study Links Temporalis Muscle Size to Dementia Risk
A recent study has revealed a surprising connection between the size of the temporalis muscle, a thin strip of muscle running from the temple to the jaw, and the risk of developing dementia.
According to the research, older adults with smaller temporalis muscles have a 60% higher likelihood of developing dementia compared to those with normal-sized muscles [1]. This suggests that muscle atrophy in this region may reflect or contribute to neurodegenerative processes related to dementia.
The relationship between muscle health and dementia onset and progression has been a focus of broader research. Muscle loss and impaired muscle function are closely linked with increased dementia risk and onset [3]. The temporalis muscle's atrophy might be an accessible biomarker for early detection of dementia risk, as it could be measured via imaging or physical examination to identify individuals at higher risk.
Regarding early detection and prevention, the temporalis muscle size could potentially be included in assessments that monitor muscle health alongside cognitive testing. Since muscle function decline often precedes clinical dementia diagnosis, interventions aiming to maintain or improve muscle mass and function—such as resistance training, physical activity, and nutritional support—may contribute to dementia prevention or delay [3].
The measurement process for temporalis muscle assessment is straightforward, using standard CT or MRI imaging technology. Cost considerations make this approach particularly attractive for widespread screening, as it costs a fraction of comprehensive brain imaging [2]. Regular temporalis muscle assessment could become a standard part of preventive healthcare.
In the realm of intervention strategies, resistance training is the cornerstone for preserving both muscle mass and cognitive function. Effective resistance training programs require progressive overload—gradually increasing weight, repetitions, or difficulty over time [4]. Compound exercises that work multiple muscle groups simultaneously provide the greatest benefit for muscle preservation.
Vitamin D deficiency affects both muscle strength and cognitive function, so ensuring adequate levels of this vitamin is essential for overall health. Creatine supplementation shows promise for both muscle preservation and cognitive enhancement [5].
In summary, the connection between smaller temporalis muscle size and a significantly increased risk of dementia [1] highlights the importance of monitoring muscle health as part of a comprehensive approach to dementia prevention. The prevention-focused approach shifts resources from expensive treatment of advanced dementia to cost-effective early intervention.
