Light sensors on smartwatches like the Apple Watch and Fitbit can’t accurately measure blood flow changes in people with obesity or with darker skin tones.

When asked to generate 300 images for one of 14 jobs, Stable Diffusion rendered the most images of light-skinned men for positions like CEO, lawyer, doctor and politician.

Traditional medical imaging – used to diagnose, monitor or treat certain medical conditions – has long struggled to get clear pictures of patients with dark skin, according to experts.

Bell and Anthony Palmer started the "Turning on the Light" podcast in 2022. The pair of friends are using their newfound platform to educate and include others on the topic of mental health.