You're right that overuse of antibiotics contributes to the drug-resistance problem, and they should never be taken unnecessarily. The biggest difficulty I see is that you can't protect yourself simply by being personally responsible in how you use antibiotics.
Imagine this...some kid you've never seen or heard of is put on antibiotics for an ear infection. Four days into treatment, he's feeling better and no longer acting sick, so Mom misses a couple of doses and then figures what the heck, she'll just stop the antibiotics completely since her child has improved and she's forgotten doses anyway. The smart little bacteria, having been exposed to enough antibiotic to get its attention but not enough to kill it completely, learns how to fight it. You now have a drug-resistant bacteria.
This kid you've never seen or heard of goes to pre-school with your child and in typical kid manner spreads his germs all over the place sharing toys that have been in his mouth or that have been touched by fingers that were up his nose. Your own child comes down with an ear infection, one that is resistant to the first-line antibiotic treatment (typically amoxicillin).
Multiply this process by thousands of times daily. Compound it with the fact that resistant infections now being treated with second-line or third-line antibiotics are given the same incomplete course of medication. You now have some really scary germs floating around that know how to fight a multiplicity of antibiotics. Your child can catch any one of these germs, despite the fact that you have always been careful to use antibiotics properly...or even not to use them at all.
Overexposure to antibiotics can create drug-resistance in the same way that inadequate exposure can. I find this frightening, since without effective antibiotics, medicine is thrown back nearly a hundred years to the days when people died from minor wounds that became infected and then septic. Without effective drugs for combating infection, any surgery becomes a cause for major terror, since the worst of the worst drug-resistant bacteria are inevitably found in hospital settings. What happens when even vacomycin can't kill them?
Scary, scary, scary. And I probably spend way too much time thinking about this issue, but I can't help but see it as one of the major health threats we'll face in our lifetime! Bottom line is, your best defense is prevention. Wash hands as frequently as possible, keep hands out of mouths and away from eyes, avoid sharing cups or utensils, limit exposure to anyone you know is sick.
On colloidal silver...
I'd suggest you read the Quack Watch article on the subject called "Risk Without Benefits" found here:
www.quackwatch.org/01QuackeryRelatedTopics/PhonyAds/silverad.htmlThe FDA about 4 years ago ruled that companies selling colloidal silver products were NOT allowed to make ANY claims as to therapeutic uses, but could still sell silver as a dietary supplement. Australia has taken similar steps. Prior to this, companies had been claiming that colloidal silver can kill bacteria, a claim that several countries' health agencies have determined to be unsubstantiated. The Federal Trade Commission has filed lawsuits against a number of colloidal silver retailers as part of its internet health fraud project (all of which the retailers have lost).
Controlled laboratory studies generally fail to demonstrate antibiotic properties of colloidal silver. Here's an example:
www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15114827The claims FOR colloidal silver are well set-out in the following article (which comes from a company that sells colloidal silver):
www.all-natural.com/silver-1.htmlThere's an entire website devoted to the benefits of silver:
www.silvermedicine.org/If you're going to use colloidal silver, I'd recommend reading this article (which includes laboratory analysis data on a number of products) on determining the quality of the product in question and what to look for so that you don't get tricked:
www.silver-colloids.com/Reports/reports.htmlKeep in mind that the FDA has concluded that colloidal silver products "falsely suggest that there is substantial scientific evidence" for their safe and effective use.
See "FDA Talk Paper" at
www.fda.gov/bbs/topics/ANSWERS/ANS00971.html )
Also keep in mind that argyria (the condition in which oral consumption of silver turns your skin silver-blue) can be PERMANENT. Be careful of your dosage.
There is also evidence that silver consumption is neurologically toxic. For example, a case of silver causing epilepsy, coma, persistent vegetative state and finally death:
www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15111684In all honesty, I don't know if colloidal silver is effective or not. I'd be careful with it, since it does carry the risk of some pretty serious and irreversible side effects.