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PDI — Sourdough Bread Nutrition Intelligence
PEAK DYNAMICS
INSTITUTE
NUTRITION INTELLIGENCE
Elite Performance Food Series
🍞
Sourdough Bread
Fermented Grain Intelligence & Gut-Brain Axis Fuel
Per Serving
2 Slices / 56g
148kcal
Total Calories
Protein 5.8g
Carbohydrates 29.4g
Fat 1.0g
Fiber 1.4g
0.8g total fat
Sat 0.2g Mono 0.2g Poly 0.4g
Selenium 18.2mcg
33%
Folate 52mcg
13%
Iron 1.8mg
10%
Lactic Acid Cultures Active Ferment
Elite Compound
Phytic Acid Reduction Up to 62%
Elite Compound
Gut Microbiome Glycemic Control Mineral Absorption Pre-Training Fuel
PDI Protocol Notes
1

Lacto-fermentation degrades phytic acid by up to 62% — dramatically unlocking bioavailability of zinc, iron, and magnesium that standard bread locks away.

2

Lower glycemic index (54 vs. 71 for white bread) due to organic acids slowing starch digestion — providing sustained glucose release ideal for endurance priming.

3

Lactic and acetic acid from fermentation lower intestinal pH, selectively feeding Lactobacillus species and suppressing pathogenic gut bacteria overgrowth.

4

Partially hydrolyzed gluten proteins reduce inflammatory zonulin response — improving gut barrier integrity in athletes with subclinical gluten sensitivity.