Your Brain Is Starving, and It's Not for Food

Your Brain Is Starving, and It's Not for Food

Author: Dr. Mercola July 22, 2026 Duration: 6:58
  • Your brain is about 75% water, and even mild dehydration slows focus, memory, reaction time, and mental clarity long before intense thirst appears
  • Researchers found that 56% of older adults in a two-year cognitive study were physiologically dehydrated, even though most consumed what guidelines considered enough water
  • Dehydration interferes with blood flow, oxygen delivery, and communication between brain cells, which contributes to brain fog, fatigue, irritability, and slower thinking
  • Drinking excessive amounts of plain water creates its own problems by diluting sodium and disrupting electrolyte balance, which lowers cellular energy production and worsens dehydration at the cellular level
  • Consistent hydration throughout the day, along with mineral-rich fluids, whole fruits, and electrolyte support during heavy sweating, helps your brain maintain sharper focus, steadier energy, and better long-term cognitive health

Each week, Dr. Joseph Mercola-Take Control of Your Health offers a direct conversation about navigating the often-confusing world of wellness. Dr. Mercola brings decades of experience as a natural health advocate to these discussions, focusing on practical strategies that go beyond conventional approaches. The episodes dig into the interconnected areas of holistic health, physical fitness, and alternative methods for building resilience. You’ll hear detailed explorations of how everyday choices impact long-term vitality, with an emphasis on personal agency and evidence-informed alternatives. This isn’t about quick fixes but about understanding the underlying principles that can help you make better decisions for yourself and your family. The tone is straightforward and investigative, aiming to equip you with knowledge that is frequently overlooked. Tuning into this podcast feels like accessing a deep resource of non-mainstream health perspectives, all centered on the fundamental goal of sustainable well-being. It’s for anyone who feels that managing their health requires looking at the full picture, from nutrition and movement to the less obvious environmental factors. Dr. Mercola’s weekly insights serve as a catalyst for taking a more active, informed role in your own health journey.
Author: Language: English Episodes: 50

Dr. Joseph Mercola - Take Control of Your Health
Podcast Episodes
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Duration: 6:40
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Scientists Reveal Creatine's Hidden Power Beyond Muscle Gains [not-audio_url] [/not-audio_url]

Duration: 7:10
Creatine acts like a rapid energy backup system for your cells, helping your muscles, brain, and heart regenerate ATP during physical exertion, mental stress and recovery from illness or aging Research suggests creatine…
How We Finally Got the Active Ingredient Where It Belongs [not-audio_url] [/not-audio_url]

Duration: 6:39
Targeted delivery technologies — lipid nanoparticles, liposomes, and microencapsulation — solve the absorption problem by protecting an active compound and carrying it across the barriers that would normally destroy it o…
Study: This Ancient Remedy May Outperform Modern Eye Drops [not-audio_url] [/not-audio_url]

Duration: 7:10
Manuka honey eye drops reduced dry eye symptoms after cataract surgery more effectively than standard artificial tears, with patients reporting notable improvements in irritation, redness, and visual comfort within one m…
Why I'm Rethinking the Way Supplements Are Delivered [not-audio_url] [/not-audio_url]

Duration: 7:00
Supplements were never meant to be miniature drugs. They exist to complement a nutrient-dense diet, not to override a poor one the way pharmaceuticals are used to suppress symptoms Compliance is the supplement world's qu…
The Supplement You Took This Morning May Have Already Failed You [not-audio_url] [/not-audio_url]

Duration: 6:34
The label on a supplement bottle tells you what went into the capsule — not what reaches your cells. For a great many products, the gap between those two numbers is enormous, and it is invisible at the point of purchase…