Some fitness classes may expose participants to sound levels that can harm hearing, according to concerns raised by a reader in the latest monthly letters column from UCLA Health. The reader noted that music and instructor voices in spin classes at various health clubs and recreation centers often reach high decibel levels. “Various health clubs and rec centers where I’ve attended spin classes really crank up the music,” he wrote. “The decibel levels sound off the charts. With the loud, sustained music and blasting instructions lasting 50 minutes or more, what risks to hearing do the students face?”
Experts explain that hearing damage is related not only to volume but also to how long someone is exposed to loud sounds. Sustained noise above 85 decibels can be harmful, while some workout classes can reach between 90 and 100 decibels—levels above recommended safety limits. At these volumes, repeated exposure may cause ringing in the ears, increased sensitivity to sound over time, or even permanent hearing loss. Using ear plugs during such classes is suggested as a protective measure.
Another topic addressed was how patients can get more out of medical appointments. A reader shared: “When at a doctor’s appointment, I often ask if I can record the findings on voice memos on my phone,” he wrote. “That way I can replay the discussion, share with my wife and google anything I didn’t quite understand. It is also a good record, for me, of my past issues.” The column advised confirming with healthcare providers before recording conversations but agreed that having an audio record can help patients process complex information and prepare follow-up questions.
The column also discussed dietary potassium sources after a reader pointed out low-sodium salt as an option: “I appreciate your focus on dietary solutions to increase potassium intake, but you forget an additional source: low-sodium salt. It’s a combination of sodium chloride, with added potassium chloride,” he wrote. “It cuts sodium intake in half while providing 350 mg of potassium. Of course, those whose potassium intake should be limited due to a medical condition should steer clear.” The advice reiterated that low-sodium salt could benefit people with normal kidney function but warned those with certain health conditions or taking specific medications about potential risks.
Readers are encouraged to send their questions via email or mail for future columns.
