Editing Homeostasis (section)

===Energy balance===
{{Main |Energy homeostasis}}
The amount of energy consumed through dietary intake must align closely with the amount of energy expended by the body in order to maintain overall energy balance, a state known as energy homeostasis. This critical process is managed through the regulation of appetite, which is influenced by two key hormones: [[ghrelin]] and [[leptin]]. Ghrelin is known as the '''hunger hormone''', as it plays a significant role in stimulating feelings of hunger, thereby prompting individuals to seek out and consume food. On the other hand, leptin serves a different function; it signals satiety, or the feeling of fullness, telling the body that it has consumed enough food.

In a comprehensive review conducted in 2019 that examined various weight-change interventions—including dieting, exercise, and instances of overeating—it was determined that the body’s mechanisms for regulating weight homeostasis are not capable of precisely correcting for '''energetic errors'''. These energetic errors refer to the notable loss or gain of calories that can occur in the short term. This research highlights the complexity of energy balance, showing that the body may struggle to adjust rapidly to fluctuations in calorie intake or expenditure, thereby complicating the process of maintaining a stable body weight in response to immediate changes in energy consumption and usage.<ref>{{cite journal |last1=Levitsky |first1=DA |last2=Sewall |first2=A |last3=Zhong |first3=Y |last4=Barre |first4=L |last5=Shoen |first5=S |last6=Agaronnik |first6=N |last7=LeClair |first7=JL |last8=Zhuo |first8=W |last9=Pacanowski |first9=C |date=1 February 2019 |title=Quantifying the imprecision of energy intake of humans to compensate for imposed energetic errors: A challenge to the physiological control of human food intake. |journal=Appetite |volume=133 |pages=337–343 |doi=10.1016/j.appet.2018.11.017 |pmid=30476522 |s2cid=53712116}}</ref>