Nutrition and dietary carcinogens

Area of Science:

• Oncology
• Nutritional Science
• Toxicology

Background:

• Carcinogenesis is influenced by major factors including smoking, infection/inflammation, and nutrition.
• Dietary factors encompass genotoxic agents and tumor promoters.
• Genotoxic agents are microcomponents found in cooked foods, fungal/plant substances, and nitrites.

Purpose of the Study:

• To review genotoxic agents and dietary constituents contributing to human carcinogenesis.
• To emphasize heterocyclic amines (HCAs) as prevalent dietary mutagens/carcinogens.
• To discuss macrocomponent overconsumption's role in genetic alterations and tumor promotion.

Main Methods:

• Literature review focusing on genotoxic agents in food.
• Analysis of heterocyclic amines (HCAs) formation and carcinogenic potential.
• Discussion of macro-nutrient intake (calories, fat, salt) and cancer promotion.

Main Results:

• Heterocyclic amines (HCAs), formed during meat cooking, are potent mutagens/carcinogens targeting organs like breast, colon, and prostate.
• Plant flavonoids are mutagenic but not carcinogenic.
• Excessive intake of calories, fat, and sodium chloride promotes genetic alterations and tumor development.

Conclusions:

• Dietary habits, particularly exposure to HCAs and overconsumption of certain nutrients, are critical in human carcinogenesis.
• Understanding these dietary risks is key to developing cancer prevention strategies.
• Effective cancer prevention aims to delay onset, achieving 'natural-end cancer'.