Sodium Bicarbonate (Baking Soda)
Episodes covering sodium bicarbonate (baking soda) — protocols, research, and expert discussions.
Oral sodium bicarbonate loading to buffer lactic acid and enhance high-intensity exercise performance
Sodium bicarbonate is one of the most well-researched and effective ergogenic aids in sports science, with an official ISSN position stand and multiple meta-analyses supporting its use. It works by increasing blood pH (creating metabolic alkalosis), which enhances the body's ability to buffer hydrogen ions produced during high-intensity exercise.
The evidence is strongest for efforts lasting 30 seconds to 12 minutes - think 400m-1500m running, rowing, swimming sprints, cycling time trials, and combat sports. Meta-analyses show consistent improvements in time to exhaustion, peak power, and muscular endurance.
The catch: GI side effects (bloating, nausea, diarrhea) are common and can be performance-ruining. The solution is enteric-coated capsules, taking it with food, or multi-day loading protocols.
If you compete in high-intensity events lasting 1-12 minutes, this is a legal, cheap, proven performance enhancer. Test your protocol in training first - GI tolerance varies hugely between individuals.
Science & Mechanisms
The Problem: Acidosis During High-Intensity Exercise
During intense exercise, your muscles produce hydrogen ions (H+) as a byproduct of anaerobic glycolysis. This accumulation of H+ causes: - Decreased muscle pH (acidosis) - Impaired enzyme function - Reduced calcium release for muscle contraction - The "burn" and fatigue that limits performance
How Sodium Bicarbonate Works:
Bicarbonate (HCO3-) is your body's primary extracellular buffer. Supplementing increases blood bicarbonate concentration by ~5-6 mmol/L, creating a state of metabolic alkalosis.
| Before Supplementation | After Supplementation |
|---|---|
| Blood pH ~7.40 | Blood pH ~7.45-7.50 |
| HCO3- ~24 mmol/L | HCO3- ~29-30 mmol/L |
| Normal buffering | Enhanced buffering capacity |
Mechanism of Action:
- Increased blood HCO3- creates a larger H+ concentration gradient
- H+ and lactate are co-transported out of muscle cells faster (via MCT1/MCT4)
- Intramuscular pH maintained closer to optimal
- Glycolytic enzyme function preserved longer
- Fatigue delayed, performance improved
Evidence Summary (ISSN Position Stand):
- Ergogenic for exercise lasting 30 sec to 12 min
- Improves muscular endurance (more reps at given load)
- Enhances peak and mean anaerobic power
- Benefits single and repeated bout exercise
- Works in both men and women
Key Research:
- ISSN Position Stand (2021): Official position supporting use for high-intensity exercise
- Umbrella Review (2021): 8 meta-analyses confirm ergogenic effects
- Carr et al. (2011): Meta-analysis showing 1.7% improvement in performance
What It Doesn't Help:
- Very short efforts (<30 sec) - not enough acid accumulation
- Very long efforts (>12 min) - limited by other factors
- Low-intensity aerobic exercise - no significant acidosis
- Strength/power (1-5 rep max) - not limited by pH
Episodes
Practical protocols for nutrition timing, supplement stacking, and recovery optimization that work for both performance and longevity. Covers whether fasted cardio actually matt...
Dr. Stephen Cabral reviews the book "Sodium Bicarbonate: Nature's Unique First Aid Remedy" by Dr. Mark Sirkus and shares his personal experience supplementing with baking soda. ...
Coach Adam Pulford and sports dietitian Kristen Arnold discuss sodium bicarbonate as an ergogenic aid for cycling performance. They cover the mechanism of action — bicarb increa...
Coach Jonathan Lee interviews Dr. Andy Sparks, an exercise physiology researcher at Edge Hill University and Liverpool John Moores University, about the science of sodium bicarb...
Katie Wells (Wellness Mama) shares her personal experimentation with sodium bicarbonate supplementation, covering its role in pH regulation, CO2 balance, and mitochondrial funct...
Internal medicine physicians Dr. Matthew Watto and Dr. Paul Nelson Williams interview nephrologist Dr. Tim Yao about managing metabolic acidosis in chronic kidney disease (CKD)....
The Barbell 1 Show breaks down a 2015 study by Griffin and colleagues from the International Journal of Sports Nutrition and Exercise Metabolism that tested four supplementation...