Overview
- Specialists cited in new reporting say the number of hours matters less than sleep depth, continuity, stable schedules and a supportive bedroom environment.
- An estimated 30% of Brazilians lack adequate sleep, according to experts quoted, underscoring a widespread public‑health concern.
- Chronic poor sleep is linked to higher risks of Alzheimer’s, obesity and cardiovascular disease, alongside reduced productivity and a greater chance of premature death.
- Common contributors include sleep apnea and other breathing disorders, ongoing stress, certain medications and hormonal issues, plus habits such as late heavy meals, evening screens, alcohol, late caffeine and inactivity.
- Recommendations include keeping regular bed and wake times, minimizing light and screens before bedtime, maintaining a dark, cool and quiet room, moderating alcohol and caffeine, exercising regularly, seeking medical evaluation for persistent fatigue and testing personal sleep need by sleeping without an alarm for several days.