Recovery Biomarkers

Tracking my recovery biomarkers across 2.5 years of fasting – including results from my 7-, 9-, and 10-day water fasts.

The end of the 10-day fast - Sep 4, 2025

After 40 days of refeeding - Oct 14, 2025

hsCRP

hsCRP, mg/L

  • Jan 27, 2023 - 0.3

  • Jun 30, 2023 - 0.3

  • Dec 17, 2024 - 0.2

  • Feb 11, 2025 (9-day fast) - 0.2

  • May 27, 2025 - 0.2

  • Sep 4, 2025 (10-day fast) - 0.2

  • Oct 14, 2025 - 0.3

RBC Magnesium

RBC Magnesium, mg/dL

  • Jan 27, 2023 - 5.5

  • Jun 30, 2023 - 4.8

  • Dec 17, 2024 - 5.7

  • Feb 11, 2025 (9-day fast) - 5.8

  • Sep 4, 2025 (10-day fast) - 5.3

  • Oct 14, 2025 - 5.3

Albumin

Albumin, g/dL

  • Jan 27, 2023 - 4.4

  • Jun 30, 2023 - 4.4

  • Dec 17, 2024 - 4.6

  • Feb 11, 2025 (9-day fast) - 4.7

  • Sep 4, 2025 (10-day fast) - 4.7

  • Oct 14, 2025 - 4.5

ALT

ALT, U/L

  • Jan 27, 2023 - 14

  • Jun 30, 2023 - 17

  • Dec 17, 2024 - 31

  • Feb 11, 2025 (9-day fast) - 23

  • Sep 4, 2025 (10-day fast) - 28

  • Oct 14, 2025 - 15

AST

AST, U/L

  • Jan 27, 2023 - 18

  • Jun 30, 2023 - 19

  • Dec 17, 2024 - 25

  • Feb 11, 2025 (9-day fast) - 29

  • Sep 4, 2025 (10-day fast) - 35

  • Oct 14, 2025 - 21

GGT

GGT, U/L

  • Jan 27, 2023 - 13

  • Jun 30, 2023 - 12

  • Dec 17, 2024 - 13

  • Feb 11, 2025 (9-day fast) - 12

  • Sep 4, 2025 (10-day fast) - 11

  • Oct 14, 2025 - 11

Magnesium

Magnesium, mg/dL

  • Jan 27, 2023 - 2.0

  • Jun 30, 2023 - 2.0

  • Dec 17, 2024 - 2.2

  • Feb 11, 2025 (9-day fast) - 2.1

  • Sep 4, 2025 (10-day fast) - 2.0

  • Oct 14, 2025 - 2.1

Creatine Kinase

Creatine Kinase, U/L

  • Jan 27, 2023 - 209

  • Jun 30, 2023 - 209

  • Dec 17, 2024 - 276

  • Feb 11, 2025 (9-day fast) - 313

  • Sep 4, 2025 (10-day fast) - 446

  • Oct 14, 2025 - 336

Vitamin D

Vitamin D, ng/mL

  • Jan 27, 2023 - 26

  • Jun 30, 2023 - 47

  • Dec 17, 2024 - 32

  • Feb 11, 2025 (9-day fast) - 47

  • Sep 4, 2025 (10-day fast) - 57

  • Oct 14, 2025 - 42

Potassium

Potassium, mmol/L

  • Jan 27, 2023 - 4.7

  • Jun 30, 2023 - 4.3

  • Dec 17, 2024 - 4.8

  • Feb 11, 2025 (9-day fast) - 5.4

  • Sep 4, 2025 (10-day fast) - 4.5

  • Oct 14, 2025 - 4.5

Sodium

Sodium, mmol/L

  • Jan 27, 2023 - 140

  • Jun 30, 2023 - 139

  • Dec 17, 2024 - 139

  • Feb 11, 2025 (9-day fast) - 256

  • May 27, 2025 - 138

  • Sep 4, 2025 (10-day fast) - 137

  • Oct 14, 2025 - 138

Vitamin B12

Vitamin B12, pg/mL

  • Jan 27, 2023 - 580

  • Jun 30, 2023 - 472

  • Dec 17, 2024 - 520

  • Feb 11, 2025 (9-day fast) - 1,548

  • May 27, 2025 - 529

  • Sep 4, 2025 (10-day fast) - 1,605

  • Oct 14, 2025 - 400