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<u>Answer</u>: Weber's/Weber-Fechner's law of just noticeable difference
This phychologoical law is used to quantify the perception of change for a given stimulus. The perceived change is proportional/constant ratio to the initial stimulus. Thus, it is the minimum amount of a stimulus intensity change that will produce noticeable variation in sensory experience.
As in the example, it has been shown that this law is not function very well for extremes of stimulation.
One dangerous consequence of very-low-calorie diets is that they
increase the individual's risk for a condition in which the blood levels become
acidic. This is known as Ketoacidosis.
<span>When the fat burns in the body, a chemical is produced known as ketones.
Some people chose low-carb diet to lose weight, before using low calorie diet
always consult your doctor.</span>
