The "sugar dilemma".

Area of Science:

• Neuroscience
• Metabolic Disorders
• Endocrinology

Background:

• Type 2 diabetes mellitus involves insulin resistance and high blood glucose.
• Current treatments focus on reducing blood glucose via insulin system activation or supplementation.
• This approach overlooks glucose's vital role in brain energy metabolism.

Purpose of the Study:

• To propose a novel therapeutic strategy for Type 2 diabetes.
• To focus on maintaining adequate glucose supply to the brain.
• To address potential neurocognitive decline associated with current diabetes treatments.

Main Methods:

• Review of physiological roles of glucose in brain metabolism.
• Analysis of insulin-independent glucose transport (GLUT1) into the brain.
• Examination of blood-brain barrier (BBB) endothelial cell membrane fluidity in relation to aging and malnutrition.

Main Results:

• Reduced blood glucose levels in diabetes treatment may cause brain energy deficiency.
• Impaired neurocognitive function can result from insufficient brain glucose supply.
• Reduced BBB endothelial cell membrane fluidity is implicated in cerebral metabolic syndrome and neurodegeneration.

Conclusions:

• Current Type 2 diabetes treatments may inadvertently harm brain function.
• A shift towards ensuring sufficient brain glucose supply is proposed for prophylaxis and treatment.
• This novel approach aims to prevent or mitigate neurodegeneration by supporting brain energy metabolism.