To clarify the title, the findings are related to liquid resin-based methods vs. the much more common FDM method (usually extruded plastic filament) method. The latter is usually ABS or PLA plastic, both of which are as theoretically safe as any other plastic in your home. PLA is a bioplastic and is actually compostable. The resins, on the other hand, are pretty nasty and require gloves to work with. The safety data…
For that matter, solid-based 3D printing can even use sugar, and make edible products.
Clickbait headline: "3D printed items contribute to obesity!". :)