Impaired glucose tolerance as a disease

Area of Science:

• Endocrinology
• Metabolic Disorders
• Cardiovascular Health

Background:

• Current diabetes diagnostic criteria using fasting plasma glucose (FPG) lack sensitivity and predictive power for microvascular complications.
• The post-oral glucose tolerance test (OGTT) phase is more sensitive for risk prediction and reflects the postprandial state associated with elevated microvascular risk.
• Dysglycemia, or impaired glucose tolerance, can precede diabetes and is linked to macrovascular disease development at lower glucose levels than microvascular disease.

Purpose of the Study:

• To review factors contributing to dysglycemia, such as insulin resistance and obesity.
• To explore strategies for reducing cardiovascular risk in individuals with dysglycemia or prediabetes.
• To highlight the importance of the post-OGTT period for risk assessment.

Main Methods:

• Literature review of factors causing dysglycemia.
• Analysis of interventions targeting cardiovascular risk in prediabetic populations.
• Evaluation of the predictive value of post-OGTT glucose levels.

Main Results:

• Fasting plasma glucose criteria are suboptimal for diabetes diagnosis and risk prediction.
• Post-OGTT glucose levels offer superior prediction of microvascular risk.
• Dysglycemia is associated with graded increases in macrovascular risk.

Conclusions:

• Prediabetes and dysglycemia represent significant cardiovascular risk.
• Interventions including diet modification, blood pressure control, statins, and insulin-sensitizing agents may mitigate risk.
• Rethinking diagnostic criteria and focusing on post-OGTT measures is crucial for managing prediabetes.