Yes, it is true that lack of sleep can lead to weight gain. Research has shown that when people do not get enough sleep, their hormones, and metabolism can be affected, leading to an increase in appetite and a decrease in energy expenditure.
Specifically, lack of sleep can lead to an increase in the hormone ghrelin, which stimulates appetite, and a decrease in the hormone leptin, which signals fullness. This can cause people to eat more and feel less satisfied after eating.
Additionally, when people are sleep-deprived, their metabolism can slow down, meaning that they burn fewer calories even when they are at rest.
Overall, getting enough sleep is an important factor in maintaining a healthy weight, along with a balanced diet and regular exercise.
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