04/02/2026
What is whole food vs. processed food?
Author Michael Pollan said “Eat food, mostly plants, not too much”. By food he was referring to real food or what people term “whole food”.
"If it has a long list of ingredients, it’s a food product. If it is the ingredient, it’s a whole food."
If you can eat something out of the ground or off a plant or tree, it is a whole food, if it has not been physically or chemically altered by cooking, milling or adding sugar, salt or chemical additives, it is a whole food.
There are 3 pillars of a whole food:
Intact Structure: The food retains its original fiber, germ, and bran (in the case of grains) or its skin and pulp (in the case of fruits and vegetables).
No Added "Chemistry": It contains no added sugars, artificial sweeteners, preservatives, synthetic colorings, or hydrogenated fats.
Minimal Processing: While some mechanical processing is allowed (like grinding oats or pressing olives), the food's nutritional profile remains fundamentally unchanged from how it was harvested.
Not all processing is equal. These four general categories can help you make better decisions.
First, unprocessed / whole foods include the edible parts of plants or animals. Fresh apples, raw spinach, dry lentils, and eggs are examples.
Second, minimally processed foods are foods that are altered slightly for preservation or ease of use, meaning no additives. Examples include: frozen broccoli, roasted unsalted nuts, and pasteurized milk.
Next, processed foods are whole foods with added salt, sugar, or oil. Canned beans (with salt), freshly baked sourdough, and canned tuna are included in this category.
And finally, ultraprocessed foods are formulations of ingredients, usually more than 4 or 5 ingredients, many of which sound like chemical names. Soda, deli meats, most (but not all) boxed cereals and even “healthy-sounding” foods like Harvest Grain chips or protein bars are included in this group.
Processing almost always removes viscous fiber which benefits sugar control and lowers cholesterol as well as helping people to feel full and lower their weight. Whole oats have it; instant oat flour has less; oat-flavored cereal has almost none.
A whole orange contains fiber that slows the absorption of its sugar. Orange juice which is processed, removes the fiber, leading to a pro-inflammatory insulin spike.
Many of the healthy anti-inflammatory compounds (like the curcumin in turmeric or the anthocyanins in berries) are most bioavailable when consumed in the "package" nature provided.
Studies show that calorie intake is much lower in people who eat whole foods compared to those that eat a diet high in ultraprocessed foods. The increased intake of ultraprocessed food in our American diet seems to be directly linked to being obese and overweight. So the ultraprocessed foods are higher in calories and lower in beneficial nutrients and fiber leading to health problems.
The bottom line is look at your food and check the ingredient list. Start reducing ultraprocessed foods in your diet. Eat a piece of fruit rather than drinking the juice or eating it from a can or as a sauce. Choose whole wheat grains as these are less processed. Even condiments, salad dressings, sauces and drinks need to be considered as these can be highly processed. Take small steps to make this change and learn to be aware of the types of food you are buying and putting in your mouth to maximize your health.