The media, even the FDA, has been reporting the decline in the effectiveness of antibiotics but most of these reports have not done a good job at revealing why scientists think this is happening. Here's a link to a good article on the current understanding of the action of pharmaceutical antibiotics and how they work against good health.. Click Here.
To summarize, the positive action of an antibiotic is to destroy the bacterial cell wall thus causing it to die. There are a couple of "side effects" of this action including the destruction of beneficial bacteria in the body which perform positive functions such as keeping candida and yeast/fungal infections at bay and general support of the body's immune system. In addition, the destruction of the bacterial cell wall seems to initiate a toxic reaction that is also harmful to the body.
More research is needed to understand the antibiotic process but in the meantime, limited use of antibiotics, use of alternative/natural immune support products, and the use of probiotics (to replenish the body's beneficial bugs) after the use of antibiotics may keep your body healthier.
Food allergies have nearly tripled in the last 20 years. A microbiologist from New York University has been researching this trend and has developed a hypothesis that use of antibiotics beginning early in life is reducing the beneficial gut flora (probiotics) thus weakening the person's immune system and leaving them more susceptible to food allergies.
From the article...
"Blaser’s (the microbiologist) theory has been tested on young mice. They were fed a strong dose of antibiotics, and soon after their immune system changed and they developed a peanut allergy. They were then given the missing positive bacteria, and the results were astounding: The allergy was gone!"