Adults generally need 7 or more hours of sleep per night for good health, with most recommendations saying between 7 to 9 hours is ideal. Sleeping less than 7 hours regularly has been linked to negative health effects such as weight gain, diabetes, heart disease, stroke, depression, and impaired immune function. Some individuals might need slightly less or more depending on factors like age, health conditions, or recovery from sleep deprivation, but 7+ hours is the consensus guideline for healthy adults.
Sleep Recommendations by Age
- Adults (18 to 64 years): 7 to 9 hours
- Older adults (65+): 7 to 8 hours
- Younger individuals and children require more sleep, progressively decreasing with age.
Individual Variations
- Some adults may function well with 6 hours; others may need up to 10 hours.
- Quality of sleep matters as much as quantity.
- Extra sleep may be needed during illness or recovery from sleep debt.
In short, aiming for at least 7 hours of quality sleep most nights is key to maintaining health and well-being.
