Often the term "Whole-Food Plant-Based" (WFPB) is used though some people have argued that "Plant-Based" doesn't necessarily mean 100% plants but merely principally plants. I use the term "Whole Plant Nutrition" and the initialism "WPN" since it removes any doubt. WPN and WFPB refer to the same nutrition.
A vegetarian (though technically a “lacto-ovo vegetarian”) diet often includes animal products such as dairy or eggs whereas a vegan diet has no animal products whatsoever. WPN improves upon a vegan diet in that it excludes processed foods such as white flours and oils which are not whole foods. The term "whole" simply means "unprocessed" and are simply plants as they are found in nature. For example, an apple is a whole food or whole plant since it is found in nature on an apple tree. Apple juice is not a whole food or whole plant since there is no such thing as an apple juice tree. Apple juice comes from a factory where apples are processed. Processing removes nutrients and fiber. Another common example is oil. Olive oil is processed though some may argue that "pressing" is not much of a process. Olive oil, as all other oils, has no fiber and practically no nutrients, just 100% fat. At least an olive has fiber and nutrients.
The term "SOS Free" refers to foods that have no added salt, oil, or sugar. Whole foods by their very nature are SOS Free, whereas some vegan foods may not be SOS Free, and are considered vegan "junk" foods such as sodas and chips.
Until TC and LDL levels are below 150 and 57 respectively, consumption of highly caloric whole foods such as olives, coconuts, avocados, and even seeds and nuts should be limited so that one's daily total fat consumption is about 10% of one's daily caloric intake. This comes out to be about 25g for me. Dr. Michael Greger gives evidence that consuming one ounce of nuts per day is very beneficial and the added 20g of fat surprisingly does not adversely degrade one's low-fat objective. This allows me to consume about 45g of fat, practically all of which is unsaturated.
The term WPN is best used with the word "lifestyle" instead of "diet." The problem with the word "diet" is that it suggests a temporary period in which a goal is to be reached and when the diet has achieved its purpose, it is no longer needed. The benefit of keeping to a WPN regimen is that it is a diet for life. It works for all conditions (with a very few food exceptions for a very few specific diseases) and mitigates, prevents, or even reverses all of the top diseases that kill Americans. It is the ideal lifestyle that everyone, worldwide should eat at all stages of life after being weaned. Until then a mother's (of the same species!) breast milk is ideal.
WPN is a "high-carb" regimen. Remember, only "whole foods" or "whole plants" are considered in WPN. "Whole" means "not processed." Ironically from the perspective of avoiding added sugars, sodas, white flours, white breads, and most donuts, bagels, cookies, chips, crackers, oil-popped popcorn, candies, and milk chocolate, the faddish "low carb" diet has it right. WPN advocates agree wholeheartedly with all of this since these foods are "processed," that is, all of their fiber and nutrients have been removed. (The oil-popped popcorn retains its fiber and nutrition but is inundated in added oil. Air-popped popcorn is good.) However, low carb advocates have it wrong when they exclude the rest of the carbohydrates, the good unprocessed carbohydrates and instead they promote fats and protein. These good carbohydrates are the carbs with fiber that have not had their fiber processed out of them. Note that no animal products have fiber. A WPN high carb diet means that the only other two substances that humans can digest, fats and proteins, must be kept low, and that is the case. Keeping these below 10% apiece insures that one gets 80% carbs. High levels of fat clogs blood vessels at all levels, arteries, veins, and capillaries. Not only does the decreased blood flow lead to cell loss resulting in dementia and even back pain, there is a drop in sexual performance. Consumption of too much fat often leads to excessive weight gain and insulin resistance that results in diabetes.
With respect to protein, keeping protein consumption to about 10% of one's daily caloric intake is also important since excessive protein consumption is not healthful and has been shown to shorten lifespan. That comes to about 70g per day for me. WPN easily meets this recommendation and can easily go well over this amount if desired. For example, most vegetables have between 10% and 20% protein with beans having about 25%. In fact, all fruits and vegetables have at least 6% protein which is exactly what the human body requires. This makes it impossible for persons eating only plants to have a deficiency in protein when consuming the recommended number of calories a day. A protein range of 8% to 12% is given by Dr. T. Colin Campbell since lactating women and athletes may require levels closer to 12%. Big strong muscular animals like gorillas seem to have no problem getting enough protein and calcium for strong muscles and bones by eating only plants. It is noted that unless stated otherwise, all consumption percentages are with respect to kilocalories (kCal) or as colloquially spoken, "calories" since basing one's input upon the actual weight of the food and not its energy/fat producing capability is meaningless. It is important to note that adopting a WPN lifestyle means there is no need to count calories or go hungry since WPN foods are naturally low in calories. The only requirement is to eat a variety of whole foods, include a daily tablespoon of ground flax seeds for Omega-3s, a B12 supplement, and vitamin D for times that you are not getting enough sun.