If you do decide to go on this elimination diet, be warned that giving up foods you used to eat can make you not feel as great as you expect to. We're talking headaches, fatigue, trouble sleeping, and digestive issues if you're not used to eating this much fibre from fruits and veggies. It also may take a while to figure out how to get your body enough carbs if you're not eating grains.
Emotionally, having so many foods be off-limits may make you feel deprived, like you're missing out, which can make you feel legitimately upset. Elimination diets in general, Jackie said, can also lead to anxiety or stress, worrying whether you'd be able to eat at a restaurant or how to handle a friend's dinner party. You may feel like a failure if you eat a food that's off-limits, or it may feel like too much pressure to stick to the rigid rules for the entire 30 days.