I'm still working in the medical field at 83. My husband doesn't need me at home staring at him all day — I want to be productive.

Barbara Ford, 83, works in the medical field.

Laura Thompson for BI

This as-told-to essay is based on a conversation with Barbara Ford, an 83-year-old registered nurse and patient advocate for a healthcare company. Ford's husband worked into his 80s until some health issues led him to retire. This interview is edited for length and clarity.

A nurse helps those who need help. If you have knowledge, you should share it. If you know how to do something and somebody is struggling, then lend a hand and help them.