Except for the one who has it in his hereditary or because of some health problems, I really don’t understand why we have so many obese individuals. If we follow the Sunnah and eat accordingly then the issue would be non existent. But, it is well known that we Muslims eat like animals and thus this condition.
Some hadiths for reference
Narrated Abu Huraira: Allah’s Messenger (ﷺ) said, “A Muslim eats in one intestine (i.e. he is satisfied with a little food) while a Kafir (unbeliever) eats in seven intestines (eats much).
(Sahih al-Bukhari #5396)
Miqdad bin Ma’dikarib (May Allah be pleased with him) reported: I heard Messenger of Allah (ﷺ) say: “No man fills a container worse than his stomach. A few morsels that keep his back upright are sufficient for him. If he has to, then he should keep one-third for food, one-third for drink and one-third for his breathing.”[At-Tirmidhi].
(Riyad as-Salihin #516)
Yahya related to me from Malik from Abu’z-Zinad from al-Araj from Abu Hurayra that the Messenger of Allah, صلی الله علیہ وسلم said, “The food of two is enough for three, and the food of three is enough for four.”
(Muwatta Malik #1693)