Metabolic Brain Disorders: Prodromes, Symptoms, and Syndromes

Area of Science:

• Neuroscience
• Metabolic research
• Aging research

Background:

• The brain relies on glucose metabolism for neuronal function and longevity.
• Aging and neurodegeneration are associated with decreased brain glucose metabolism and nicotinamide adenine dinucleotide (NAD) levels.
• NAD deficiency particularly affects high-energy-demand brain structures, leading to neurological and psychiatric disorders.

Purpose of the Study:

• To investigate the role of glucose metabolism and NAD in brain aging and neurodegeneration.
• To explore the potential of NAD precursor supplementation as a therapeutic strategy.

Main Methods:

• Review of current clinical studies and research findings on brain metabolism and aging.
• Analysis of the relationship between glucose metabolism, NAD deficiency, and neurodegenerative changes.
• Evaluation of the efficacy of NAD precursor supplementation in preclinical and clinical settings.

Main Results:

• Age-related decline in glucose metabolism, linked to NAD deficiency, contributes to brain aging and neurodegeneration.
• Early signs of brain aging manifest in the hypothalamus and cerebral cortex, correlating with metabolic disorders like insulin resistance.
• NAD precursor supplementation shows promise in slowing aging and neurodegeneration if initiated early.

Conclusions:

• Maintaining adequate glucose metabolism and NAD levels is crucial for brain health and preventing neurodegeneration.
• Early intervention with NAD precursors may offer a protective effect against age-related cognitive decline.
• Therapeutic efficacy of NAD precursors diminishes significantly once neurodegenerative diseases are established.