A history of asthma strongly increased the risk of developing the flu by over double. If people in the household covered their noses when sneezing or covered their mouths when coughing it lowered transmission fairly robustly for each. Green Tea was a winner. People who drank green tea at least twice a week had a 61% lowered risk of developing the flu.
A wonderful study demonstrates how drinking green tea frequently or consuming healthy produce helps maintain the strength and independence of aging women. In the study 2121 women 65 years of age or older who were grandmothers or acquaintances of dietetic students.