The analysis demonstrated that fermented dairy products were not statistically significantly protective for women (HR = 0.98, 95%CI = 0.95–1.02), nor for ER+/PR+ BC (HR = 1.01, 95%CI = 0.97–1.05) or ER−/PR- BC (HR = 1.03, 95%CI = 0.92–1.15). The gene discussed is PGR; the disease is breast cancer.