Three seasons ago there was a contamination scare that involved melons. It made me very glad that I was growing my own melons that year. Now I am experiencing the double whammy of a salmonella scare involving cilantro and cucumbers sending shock waves through the produce sections of American food stores.
Fortunately the FDA is right on top of this and has isolated the source of the contamination in each case. And even more fortunately, I can get all the cilantro and lemon cukes I want from my garden.
Food safety isn't the main reason I like to garden, but it is a really great side benefit.