I think the current default knowledge you could expect a random average person to understand is limited to approximately the following single sentence: “A balance of diet and exercise is the key to losing weight.”

This is technically correct, but is so misleading that I classify it as incorrect.

That statement is exploitative of how the English language is understood, even if not intentionally so, that the lack of any other key points or instructions is itself used as contextual information.

In other words, the sentence likely translates something similar to the following incorrect statement: “A perfectly level 50-50 effort balance of both lowering daily calories to the [2000] calorie limit for [your demographic], because this is the stated necessary calories to support a healthy [demographic] for 1 day, as well as achieving the minimum daily recommended exercise limit of [1 hour for your demographic] plus [1 hour per 100 calories] consumed over [2000 calories] are both of equal value in the goal of losing weight, and are equal requirement to support the other such that one holds no value without the other.”