Sugars and Gastrointestinal Health

Area of Science:

• Nutrition Science
• Gastroenterology
• Public Health

Background:

• Sugar overconsumption is a significant public health concern, linked to rising noncommunicable diseases like diabetes, cardiovascular disease, and cancer.
• Current sugar intake levels in Westernized societies are unprecedented and pose greater annual mortality risks than infectious diseases.
• While excessive dietary fat is well-studied, the specific impact of high refined sugar intake, up to 40% of calories in industrialized nations, remains poorly understood.

Purpose of the Study:

• To review the roles of various dietary carbohydrates.
• To elucidate the consequences of excessive dietary carbohydrate intake on intestinal homeostasis.
• To highlight the specific impact of high sugar intake on tissue and organ function.

Main Methods:

• Literature review focusing on scientific studies and international recommendations regarding sugar consumption.
• Analysis of the effects of hyperglycemia and excessive sugar intake on the intestinal barrier, gut microbiota, and mucosal immunity.
• Examination of the link between dietary patterns, sugar intake, and noncommunicable disease incidence.

Main Results:

• High sugar intake disrupts the intestinal barrier, increasing gut permeability.
• Excessive sugar consumption leads to gut microbiota dysbiosis, disturbing mucosal immunity and infection susceptibility.
• Hyperglycemia, often resulting from high sugar intake, contributes to multiple tissue and organ dysfunctions.

Conclusions:

• Excessive intake of free sugars negatively impacts intestinal homeostasis and overall health.
• Reducing free sugar consumption is a critical public health strategy, aligning with World Health Organization recommendations.
• Further research is needed to fully understand the specific mechanisms by which refined sugars affect health.