As in many things involving optimal health, the simple things -- washing your hands with plain soap and water, cleaning those handles on your shopping cart or wearing gloves -- are often the best means to protect your health.

Unfortunately, in reaction to bacterial studies like this one, more places than ever, particularly stores that sell food, offer free antibacterial wipes that contain agents like triclosan that kill human cells as well as bacteria.

Even worse, a growing number of experts believe the increased use of such products may lead to antibiotic-resistant bacteria.

That said, I am not a big fan of blaming bacteria for illness, as it is your impaired immune system that allows you to get sick. Immune system impairment typically results from not enough sleep, uncompensated emotional stress, not enough sunlight or exercise or eating sugar or too many grains.

However, clearly bacteria and viruses can and do cause illness when your immune system is impaired, and it most likely makes sense to reduce obvious exposures.

If you use a community keyboard, mouse or trackball, consider cleaning it regularly with peroxide wipes prior to using it. You could also use isopropyl alcohol, but I would advise against it as it is far more toxic to your tissue than peroxide -- and it is no more effective in killing these germs.

I urge you to review an article I ran three years ago on infected keyboards too.