Lifestyle photography often crosses paths with food and product photography. Images involving human element are often considered as lifestyle photos.
Personally, I incorporate a lot of human element in my images, whether that is a process shot or hands in frames. Human element adds more realistic vibe to the images and makes a connection between the product and the customer. It gives the audience a taste of what they could have and helps them transfer into that moment captured in an image, visualising themselves eating at that venue or using that product.