Western diet. See Standard American Diet
wheat, 111, 135–36, 194, 301. See also gluten
white matter of the brain, 44
Why Zebras Don’t Get Ulcers (Sapolsky), 65
women, 151, 161, 283, 290
“wonder junkie” behaviors, 236–37
worrier or warrior behaviors, 228–29
yin and yang neurotransmitters, 214–17
yoga, 217
Yudkin, John, 29
zeaxanthin and lutein, 55–56, 59, 143, 236, 298, 333–34
zonulin protein, 192, 193–94