Antibiotic resistance (AR) is the result of an overuse or misuse of antibiotics. This resistance is certainly a big worry.
There are certain strains of bacteria that have become impossible to eliminate with almost all types of antibiotics.
Broad-spectrum antibiotics are the ones that can promote AR as well as interfere with the absorption of vitamins B6 and B12, folic acid, minerals like magnesium, calcium and potassium.
Chapter: Antibiotics :: 25 April 2007