Men and women produce lower levels of hormones starting in their 50s.

They continue to produce low levels of hormones well into a woman's 80's.

Many of these tools produce sound levels high enough to damage hearing if precautions are not taken.

"Then it was an abnormally hot summer, which produces high levels of virus."

A body in pain produces high levels of hormones that cause stress to the heart and lungs.

This will make sure that your speakers produce identical levels of volume.

But most hobbies produce high levels of anxiety and frustration.

The ability to produce adequate levels of biomass over a wide environmental range have been well documented.

As a result, baking and roasting produce lower levels of the compounds.

The factory has been producing higher than acceptable levels of pollution.