# Dietary and breakfast timing health warnings > Live situation record from CLSTR: https://clstr.news/situations/dietary-and-breakfast-timing-health-warnings > Updated: 2026-10-27T20:40:03.000Z. Sources: 3. Developments: 2. Health and nutrition experts have issued warnings regarding specific breakfast habits and their impact on digestive and metabolic health. Gastroenterologists have cautioned against consuming certain foods on an empty stomach, particularly leftover rice, porridge, or meat. Dr. Liu Aihua of Beijing Hospital noted that bacteria such as Bacillus cereus can produce heat-resistant toxins in cooled rice that reheating might not eliminate, potentially causing inflammation, abdominal pain, and diarrhea. Additionally, drinking coffee without food is flagged for its ability to trigger excessive gastric acid secretion, which may lead to ulcers, acid reflux, and heartburn, as well as palpitations and anxiety. Separately, nutrition experts from the Cleveland Clinic have highlighted the risks of delaying breakfast. They suggest that eating more than two hours after waking or fasting past 9:00 AM can disrupt the body’s biological clock. To optimize metabolism, hormone activity, and insulin regulation, experts recommend consuming breakfast within one to two hours of waking, ideally between 6:30 AM and 8:00 AM. ## Timeline ### 2026-10-27: Health experts warn against the risks of late breakfasts Health experts advise eating breakfast between 6:30 AM and 8:00 AM to optimize metabolism and avoid the health risks associated with delaying meals past 9:00 AM. 3 sources. https://clstr.news/cluster/health-experts-warn-against-the-risks-of-late-breakfasts ### 2026-10-15: Health experts warn against specific breakfast foods on empty stomachs Medical experts warn that eating certain foods like overnight leftovers or drinking coffee on an empty stomach can damage the stomach lining and cause issues like ulcers or acid reflux. 3 sources. https://clstr.news/cluster/health-experts-warn-against-specific-breakfast-foods-on-empty-stomachs --- Cite as: Dietary and breakfast timing health warnings. CLSTR, https://clstr.news/situations/dietary-and-breakfast-timing-health-warnings