Maybe That's Why You Fell For Her. She Cooks Just The Way Your Mom's Gut Microbes Like It.
Biological causation gets more complex by the day and the simple, reductionist model of toxin in - disease out common to toxic tort cases gets more absurd by the day. Imagine what you'd have thought two years ago about this claim: the diet of a fruit fly changes the composition of the bacteria in its gut and those bacteria then change the pheromones she releases so that she will attract a male fruit fly with the same sort of bacteria in his gut resulting in a mating preference change that lasts up to 37 generations even if her offspring's diet changes along the way.
Thus, it's not just a matter of "They Are What You Eat"; it may well also be a matter of "You Are What Your Great Great Great Great Grandmother's Intestinal Bacteria Ate". See "Bacteria Can Drive the Evolution of New Species" in Nature News for the write-up and "Commensal Bacteria Play a Role in Mating Preference of Drosophila melanogaster" for the paper that heralds the discovery.
For more on the idea of a "hologenome" - i.e. the idea of thinking of "your" genetic code as consisting of the genes in your chromosomes plus those in the bacteria that live in and on you - see the following:
"Role of Microorganisms in the Evolution of Animals and Plants: the Hologenome Theory of Evolution"
"The Hologenome Theory of Evolution Contains Lamarckian Aspects Within a Darwinian Framework"
"Whole-Body Systems Approaches for Gut Microbiota-Targeted Preventive Healthcare"
