Sugar is the main source of energy as it produces energy on metabolic decomposition. But these days low calorie drinks are more popular, why ?

Explanation

Natural sweetnears e.g, sucrose add to calorie intake. Due to occurrence of more cases of diabates and obesity young and old people, these days people usually take low calorie drinks. These are artificial sweetening agents as given below.
Saccharin It is 550 times as sweet as cane sugar. It is excreted from the body through urine.
Aspartame It is 100 times as sweet as cane sugar. Its use is limited to cold foods and soft drinks because it is unstable at cooking temperature.
Alitame It is more stable than aspartme but the control of sweetness of food is difficult while using it.
Sucralose It is stable at cooking temperature. It does not provide calories.
These artificial sweetening agents do not metabolize and hence do not produce any energy.