According to a US study of more than 10,000 women, long-term use of antibiotics may be linked to a substantially increased risk of breast cancer. Women with more than 25 prescriptions, or who took antibiotics
A 29-year-old woman had suffered from exfoliative dermatitis and occasional nettlerash for two years. Prior to that, she had had acne since she was 20. The acne had got better when her GP put her on 100 mg/day of doxycycline,