Management of Mild Brain Volume Loss

Understanding Brain Volume Loss

Normal aging is associated with some degree of brain volume loss, ranging from -0.05% per year in young adults to -0.3% per year in older adults, according to the American Academy of Neurology 1
A change of -0.4% per year has been proposed as the cut-off for pathological brain atrophy, as suggested by the American Academy of Neurology 1, 2

Evaluate for signs of volume depletion, including confusion, non-fluent speech, extremity weakness, dry mucous membranes, and dry tongue, as recommended by the Clinical Nutrition Society 3, 4
Screen for modifiable risk factors associated with accelerated brain volume loss, such as cardiovascular risk factors, including hypertension, diabetes, and obesity, as suggested by the American Heart Association 6, 7
Consider alcohol consumption and smoking history as potential risk factors for brain volume loss, according to the American Academy of Neurology 8

Ensure brain MRI scans are acquired with standardized protocols to minimize variability, as recommended by the American College of Radiology 8, 6
Consider time of day when scheduling follow-up scans, as brain volumes are typically larger in the morning, according to the National Sleep Foundation 6
Account for potential confounding factors when interpreting results, including scanner upgrades or different scanners, sex differences in brain morphology, and diurnal fluctuations, as suggested by the American Academy of Neurology 6

Address hydration status first, providing isotonic fluids orally if signs of volume depletion are present, as recommended by the Clinical Nutrition Society 3, 4, 5
Optimize cardiovascular health by controlling hypertension, diabetes, and other vascular risk factors, as suggested by the American Heart Association 6, 7
Maintain stable body weight, avoiding weight-reducing diets in older adults, and focus on a balanced, nutrient-rich diet, as recommended by the Clinical Nutrition Society 3, 4, 5

If brain volume loss is progressive, further evaluation for neurodegenerative conditions may be warranted, as suggested by the American Academy of Neurology 1, 2
Be aware that scanner upgrades or different scanners can significantly affect measurements, according to the American College of Radiology 6