Reactive Oxygen Species Bridge the Gap between Chronic Inflammation and Tumor Development

Table 2

Inflammatory factors and their classification.

Category	Proinflammatory factors	Reference
Physical factors	Radiation, UV, hyperthermia, hypothermia, trauma	[70, 71]
Chemical factors	Asbestos, heavy metals, organic toxicants, lipopolysaccharides, dust	[72–74]
Biological factors	Bacterial infection, virus infection, fungal infection	[75, 76]
Unhealthy lifestyle	Smoking, alcohol, high-calorie diet, stress, sedentary lifestyle	[77–79]
Chronic diseases	Obesity, diabetes, hyperglycemia, hyperglycemia	[80–82]
Pathologic tissues	Apoptotic cells, ischemia, hypoxia	[83, 84]
Anaphylaxis	Allergens, autoimmune diseases	[85, 86]