Part 7
Sleep, Stress, and Mood
ILLUSTRATION. An executive sleeps five hours, drinks coffee through the afternoon, and uses wine to wind down. He is worried about his concentration and has collected three brain-supplement recommendations. His sleep has not yet made the list of things to investigate. Sometimes the missing question is less exotic than the proposed answer.
Clinical scenes in this edition are explicitly labeled illustrations. They describe imagined situations used to explain medical decisions, not documented patients, diagnoses, conversations, or treatment outcomes. They should not be read as evidence that a particular intervention works. Personal recollections are recollections, not medical records.
Evidence grade (draft mapping). 9 questions; a question with mixed evidence counts under each grade.
- 98. How much sleep do I actually need?Most adults need about seven to nine hours, with individual and age-related variation. Regularly getting less than six is linked to more heart disease, diabetes, weight gain, depression, and dementia.GGuideline-based / consensus
- 99. Is it true that a regular schedule matters as much as the hours?Yes. Going to bed and waking at consistent times may predict longevity as well as total hours.CObservational
- 100. What actually improves sleep?Consistent timing, morning light, a cool dark room, less alcohol and late caffeine, and for chronic insomnia, a specific therapy called CBT-I.ARobust human trials
- 101. Is there a simple routine for the evening?Yes. I call it 10-3-2-1.JClinical judgment / author synthesis
- 102. Which sleep supplements are reasonable?A few supplements have small, indication-specific studies. None should become an automatic bedtime stack, and persistent insomnia deserves assessment.BLimited or small human studies
- 103. Are sleeping pills and melatonin safe for long-term use?Risks differ by drug and patient. Benzodiazepines and Z-drugs are particularly concerning in older adults; other insomnia medicines have different profiles. Review persistent use rather than assuming every sleep medicine is interchangeable.BLimited or small human studiesARobust human trials
- 104. How does chronic stress age the body?Chronic stress can affect sleep, behavior, autonomic activity, blood pressure, and inflammation. Hormone responses vary; stress does not keep everyone’s cortisol uniformly high.CObservational
- 105. What lowers stress in ways that show up on medical tests?Exercise, sleep, time with people you trust, time outdoors, and a daily practice of stillness, whether you call it meditation, breathing, or prayer.CObservational
- 106. Is depression a longevity issue?Yes. Depression raises the risk of heart disease and dementia, and after a heart attack it roughly doubles the chance of dying. It is treatable.CObservational