Question
QUESTION: I would like to know whether bending frequently,as in when one uses a vacuum cleaner, could cause back or waist damage?
ANSWER: Yes, any repetitive motion can cause damage to the area that is being worked over and over again.  That's why it is important to observe good body mechanics to avoid hurting yourself when doing actions like vacuuming, shoveling snow, or other bending and twisting activities.

Thanks for your question, Steve.  I hope that my answer has helped.

---------- FOLLOW-UP ----------

QUESTION: Thanks for the answer. In it, You suggested using good body mechanics as a way of preventing damage to the Waist.
Could You give examples of this?

Answer
Good body mechanics uses principles like keeping the weight close to your body as opposed to carrying or lifting something with your body bent or stretched.  For things like vacuuming, it's important to step forward as you push because that keeps your back and waist upright as well as keeping the weight close to your body.

Thanks for the question, Steve.  I hope the answer helped clear things up for you.