Eat whatever you want and you'll be fine. Just get your immune system up and running; get rid of dental Amalgams and do heavy metal chelation; stop taking Antibiotics and replenish your gut flora, quit watching television and get out in nature and excercise, and get in touch with your emotions, feel, and be present in your body.
If your lettuce has mud, slugs, and caterpillars on it then you may so choose to wash it. I don't.