Study identifies five factors that increase flu infection risk by 3.6 times

Japanese researchers have identified five key factors that significantly increase susceptibility to influenza infections, with individuals meeting multiple conditions facing up to 3.6 times higher risk.

A joint research team from Taisho Pharmaceutical, Hirosaki University and Kyoto University analyzed health data from approximately 1,000 adults aged 20 and above to determine flu vulnerability patterns.

The study found people with these characteristics had higher infection rates:

• Elevated blood sugar levels
• Previous pneumonia history
• Busy work schedules with insufficient sleep
• Poor nutritional status
• Allergic constitution

Researchers noted that individuals meeting several of these conditions simultaneously showed approximately 3.6 times greater risk of contracting influenza compared to those without these factors.

The research team recommended targeted preventive measures including lifestyle improvements and vitamin supplementation based on individual risk profiles.