Tracking my heart health biomarkers across 3 years of fasting – including results from my 7-, 9-, and 10-day water fasts. Scores dip at the end of every extended fast (64, 63, 63) and rebound back within weeks of refeeding (98, 78, 91).
Heart Health Biomarkers
Jun 30, 2023 - 90
Dec 10, 2024 - 87
Dec 17, 2024 - 76
Feb 11, 2025 - 64 (end of 9-day fast)
May 27, 2025 - 98
Sep 4, 2025 - 63 (end of 10-day fast)
Oct 14, 2025 - 78 (after refeeding)
Jul 25, 2026 - 76 (before 10-day fast)
Aug 6, 2026 - 63 (end of 10-day fast)
Aug 18, 2026 - 91 (after refeeding)
Apolipoprotein B
ApoB, mg/dL
Jan 27, 2023 - 88
Jun 30, 2023 - 78
Dec 17, 2024 - 104
Feb 11, 2025 (9-day fast) - 137
May 27, 2025 - 78
Sep 4, 2025 (10-day fast) - 136
Oct 14, 2025 - 87
Triglycerides
Triglycerides, mg/dL
Jan 27, 2023 - 41
Jun 30, 2023 - 37
Dec 17, 2024 - 44
Feb 11, 2025 (9-day fast) - 108
May 27, 2025 - 42
Sep 4, 2025 (10-day fast) - 163
Oct 14, 2025 - 44
HDL Cholesterol
HDL Cholesterol, mg/dL
Jan 27, 2023 - 71
Jun 30, 2023 - 75
Dec 17, 2024 - 88
Feb 11, 2025 (9-day fast) - 54
May 27, 2025 - 83
Sep 4, 2025 (10-day fast) - 50
Oct 14, 2025 - 71
LDL Cholesterol
LDL Cholesterol, mg/dL
Jan 27, 2023 - 114
Jun 30, 2023 - 108
Dec 17, 2024 - 138
Feb 11, 2025 (9-day fast) - 179
May 27, 2025 - 98
Sep 4, 2025 (10-day fast) - 161
Oct 14, 2025 - 117
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
TSH
TSH, µIU/L
Dec 13, 2023 - 1.71
Dec 17, 2024 - 2.3
Feb 11, 2025 (9-day fast) - 1.42
May 27, 2025 - 2.12
Sep 4, 2025 (10-day fast) - 1.79
Oct 14, 2025 - 1.86
Total Cholesterol
Total Cholesterol, mg/dL
Jan 27, 2023 - 197
Jun 30, 2023 - 194
Dec 17, 2024 - 239
Feb 11, 2025 (9-day fast) - 256
May 27, 2025 - 193
Sep 4, 2025 (10-day fast) - 242
Oct 14, 2025 - 201