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Understanding that it's difficult for many people to transform their diet completely, you do not have to go 100% raw. If you can incorporate natural alternatives to the foods you were eating (such as organic raw peanut butter and not regular peter pan), purchase all organic foods, incorporate plenty of fresh fruits and veggies and only drink water, you'll be making a dramatic change to your life and health, even if you aren't eating an all raw diet.
Changing over to 100% raw foods right away can be hard for some people due to their personal preferences, and also when it's necessary to compromise with other family members. And remember, when you change to a raw diet, your body will begin to detox within a few days. Making a slower, more gradual change can be a wise decision, so you don't through detox so hard at the beginning.
One method is to use six days on, one day off, which seems to work well by letting your body become used to the the choices you're offering. With time, the body starts to crave the healthier foods when given a choice. Contrasts between food types and their tastes will be noted, and you'll begin wanting more of the raw food choices as you feel the difference in how you feel.
Another option is too eat all raw food during the day, and then have some cooked foods in the evenings. This is a good way for people who still want to eat some meat products - a very small portion of lean turkey or fish in the evening can help prevent cravings at other times.
Keep in mind that you do not have to incorporate a full 100% raw food diet forever! As long as you maintain at least 75% of your diet raw, you'll see huge improvements in your health and well-being. Just eating more fruits and veggies alone will change your health drastically.