Sources
- American Academy of Sleep Medicine. “Sleep and Caffeine.”
- Frontiers in Psychiatry. “The Safety of Ingested Caffeine: A Comprehensive Review.”
- National Heart, Lung, and Blood Institute. “Heart Palpitations.”
- Gut. “Effect of Coffee on Distal Colon Function.”
- International Foundation for Functional Gastrointestinal Disorders. “Common Causes of Chronic Diarrhea.”
- Journal of Caffeine Research. “Caffeine Use Disorder: A Comprehensive Review and Research Agenda.”
- The Journal of Headache and Pain. “Caffeine in the Management of Patients with Headache.”
- National Institute of Mental Health. “Anxiety Disorders.”
- National Institute on Aging. “A Good Night’s Sleep.”
- Proceedings of the National Academy of Sciences of the United States of America. “Caffeine Induces Gastric Acid Secretion Via Bitter Taste Signaling in Gastric Parietal Cells.”
- Psychomatic Medicine. “Caffeine Effects on Cardiovascular and Neuroendocrine Responses to Acute Psychosocial Stress and Their Relationship to Level of Habitual Caffeine Consumption.”