We’re often told that getting at least seven hours of sleep each night is essential. But for many, factors like stress-induced insomnia or unexpected disturbances make that goal hard to achieve. Recently, the sleep tech company Simba used artificial intelligence to study how lack of sleep affects the body. Experts now caution that not getting enough rest can lead to serious health consequences.

Hormonal Changes

A survey of 2,175 UK adults by Simba examined sleep habits, health, and appearance. AI analysis revealed how sleeping less than seven hours affects the body.

Lisa Artis of The Sleep Charity explained that sleep deprivation raises cortisol, worsening skin conditions like eczema and psoriasis, leading to irritation and redness.

Increase in Body Weight

Lack of sleep contributes to weight gain. A survey found 26% of sleep-deprived individuals were overweight, and 32% experienced bloating.

“Sleep regulates hunger hormones,” Ms. Artis explained. Less sleep increases ghrelin (hunger hormone) and lowers leptin (fullness hormone), leading to overeating and cravings for sugary foods.