THE 90-DAY FAST Follow DAY 47/90

The body dashboard

EVERY NUMBER, PUBLIC

Two kinds of numbers live here. Daily weight and body composition come from John's home scale every morning. Real lab bloodwork is drawn at a clinic, baseline before day 1 and then roughly every 30 days and publishes here in full. The dataset behind the videos.

178.3LB
Current weight · day 47
−50.3LB
Lost since day 1
22%
Of starting body weight
47/90
Days on water

The lab work

TWO PANELS PUBLISHED · BASELINE + DAY 31

This is John's real blood, drawn at Labcorp San Diego on July 31, 2026, the morning before day 1, after an overnight fast, ordered by his physician. It is the before photo in lab numbers. The second panel, drawn on day 31, now sits right below it.

One number jumps off the page. John's fasting glucose was 106 mg/dL, flagged high against the 70 to 99 reference range. Fasting glucose between 100 and 125 is what the American Diabetes Association calls prediabetes. That number is the single best argument for this whole project and watching where it lands on the next draw is exactly what this page exists for.

TestResultUnitsReferenceFlag
Glucose 106 mg/dL 70-99 HIGH
BUN 10 mg/dL 6-24
Creatinine 1.05 mg/dL 0.76-1.27
eGFR 83 mL/min/1.73 >59
BUN/Creatinine Ratio 10 9-20
Sodium 140 mmol/L 134-144
Potassium 4.6 mmol/L 3.5-5.2
Chloride 103 mmol/L 96-106
Carbon Dioxide, Total 24 mmol/L 20-29
Calcium 9.3 mg/dL 8.7-10.2
Protein, Total 7.3 g/dL 6.0-8.5
Albumin 4.9 g/dL 3.8-4.9
Globulin, Total 2.4 g/dL 1.5-4.5
Bilirubin, Total 0.6 mg/dL 0.0-1.2
Alkaline Phosphatase 120 IU/L 47-123
AST (SGOT) 22 IU/L 0-40
ALT (SGPT) 35 IU/L 0-44

Straight talk about what this panel is. A comprehensive metabolic panel covers blood sugar, kidney function, liver function, electrolytes and blood proteins. It is the safety panel, the numbers John's doctor watches to make sure an extended fast is not hurting the body. It does not include cholesterol or A1c. We said the next draw would add cholesterol. It did, see below.

The report itself, name and physician visible because everything on this project is public. See the full Labcorp report.

The day 31 panel

DRAWN AUG 31 · DAY 31 OF 90

One month in, a second look at the blood. This one came from an at home lab kit, drawn on August 31, 2026, day 31 of the fast. It is a much wider net than the baseline. Twenty five markers across heart health, metabolism and hormones, including the cholesterol panel the baseline was missing.

The kit's own scorecard on the full panel reads 36 percent optimal, 60 percent average and 4 percent out of range. One month of water and the overwhelming majority of his blood work sits in the normal zone, which is exactly what a supervised fast wants to see.

Honest fine print before the numbers. This panel is from a different lab than the baseline. The kit also reports plain values with app style categories instead of units and reference ranges. So the numbers below are listed exactly as the report gives them. They should not be compared digit for digit against Labcorp results. The two panels also mostly measure different things, the baseline was a safety panel and this one is a wide wellness panel. Where they genuinely overlap, there is a comparison table at the bottom.

Heart health

TestWhat it tracksResult
Total Cholesterol Heart health 111
HDL Cholesterol Cholesterol clearer 44.1
LDL Cholesterol Cholesterol mass 48.4
Total Cholesterol/HDL Ratio Heart health 2.51
Triglycerides Stored energy 92.5
Triglycerides/HDL Ratio Metabolic health 2.09
ApoB Number of particles 61.3
LDL/ApoB Ratio LDL particle size 0.78
Remnant Cholesterol 18.5
High Sensitivity CRP Inflammation indicator 2.02

Metabolic efficiency

TestWhat it tracksResult
Fructosamine Average blood glucose 231
Albumin Fluid balance 4.95
Alkaline Phosphatase (ALP) Bone and liver health 113
GGT Liver stress 16.5
Ferritin Iron storage 311
Thyroid Stimulating Hormone Thyroid regulator 3.05
Vitamin D Vitality hormone 34.6
Creatinine Kidney health 0.804
eGFR Kidney filtration 103.71
Uric Acid Metabolic waste 3.57

Hormone balance

TestWhat it tracksResult
Cortisol Stress response 13.2
Estrogen Reproductive health 32.4
SHBG Hormone availability 74.2
Total Testosterone Vitality indicator 597
Free Testosterone Active testosterone 68.83

The one number this panel cannot answer is the one the baseline made famous. John's fasting glucose was 106 at Labcorp before day 1 and this kit does not test fasting glucose. It tracks fructosamine instead, which the kit labels average blood glucose. The head to head glucose rematch waits for the next Labcorp draw.

What the two panels can actually compare

Only four markers appear on both reports. Different labs and different methods. Read the direction, not the decimals.

TestBaseline · Labcorp · Jul 31Day 31 · kit · Aug 31Read
Creatinine 1.05 0.804 kidney marker, lower
eGFR 83 103.71 kidney filtration, higher
Alkaline Phosphatase 120 113 was near the top of the Labcorp range
Albumin 4.9 4.95 steady

All of it goes to John's doctor, the same as the daily numbers. She sees every panel as it lands.

Morning weight, home scale

LBS · DAYS 1 TO 49 · WINDOW GROWS WITH THE FAST
185 205 225 D1D8D15D22D29D36D43D49 228.6 212.5 205 199 191.1 190.9 181.6 178.3 lb

Readings come from John's scale each morning, same scale, same time. The chart window grows with the fast, all the way to day 90.

Body composition

FROM JOHN'S DAILY SCALE READINGS
BMI
27
day 1 was 34.6
Body fat
28.4%
day 1 was 42.3%
Body water
31.9%
day 1 was 27.7%
Muscle
38.3%
day 1 was 34.5%

The weight log

DayDateWeightChangeTotalFat %Muscle %Ketones mg/dL
1 August 1, 2026 228.6 lb 0 42.3 34.5 0
2 August 2, 2026 224.2 lb -4.4 −4.4 41.1 34.8 0
3 August 3, 2026 220.6 lb -3.6 −8 40.1 35 0
4 August 4, 2026 218 lb -2.6 −10.6 39.4 35.2 5
5 August 5, 2026 216 lb -2 −12.6 38.9 35.3 8
6 August 6, 2026 214 lb -2 −14.6 38.3 35.5 4
7 August 7, 2026 212.5 lb -1.5 −16.1 37.9 35.5 8
8 August 8, 2026 211.4 lb -1.1 −17.2 37.6 35.6 16
9 August 9, 2026 209.4 lb -2 −19.2 37 35.8 16
10 August 10, 2026 208.7 lb -0.7 −19.9 36.9 35.8 16
11 August 11, 2026 207.2 lb -1.5 −21.4 36.4 35.9 16
12 August 12, 2026 206.3 lb -0.9 −22.3 36.2 36 16
13 August 13, 2026 205.6 lb -0.7 −23 36 36 16
14 August 14, 2026 205 lb -0.6 −23.6 35.8 36.1 16
15 August 15, 2026 204.3 lb -0.7 −24.3 35.6 36.1 16
16 August 16, 2026 203.7 lb -0.6 −24.9 35.5 36.2 16
17 August 17, 2026 203 lb -0.7 −25.6 35.3 36.2 16
18 August 18, 2026 202.8 lb -0.2 −25.8 35.2 36.3 16
19 August 19, 2026 201 lb -1.8 −27.6 34.7 36.4 16
20 August 20, 2026 199.7 lb -1.3 −28.9 34.4 36.5 16
21 August 21, 2026 199 lb -0.7 −29.6 34.2 36.5 16
22 August 22, 2026 197.9 lb -1.1 −30.7 33.9 36.6 16
23 August 23, 2026 197 lb -0.9 −31.6 33.6 36.7 16
24 August 24, 2026 195.9 lb -1.1 −32.7 33.3 36.8 16
25 August 25, 2026 194.8 lb -1.1 −33.8 33 36.9 16
26 August 26, 2026 193.5 lb -1.3 −35.1 32.6 37 16
27 August 27, 2026 192.6 lb -0.9 −36 32.4 37 16
28 August 28, 2026 191.1 lb -1.5 −37.5 32 37.2 16
29 August 29, 2026 191.1 lb 0 −37.5 32 37.2 16
30 August 30, 2026 190.2 lb -0.9 −38.4 31.7 37.3 16
31 August 31, 2026 192 lb +1.8 −36.6 32.2 37.1 4
32 September 1, 2026 192.6 lb +0.6 −36 32.4 37 0
33 September 2, 2026 192 lb -0.6 −36.6 32.2 37.1 0
34 September 3, 2026 191.3 lb -0.7 −37.3 32 37.2 0
35 September 4, 2026 190.9 lb -0.4 −37.7 31.9 37.2 0
36 September 5, 2026 190.2 lb -0.7 −38.4 31.7 37.3 0.5
37 September 6, 2026 187.3 lb -2.9 −41.3 30.9 37.5 1.5
38 September 7, 2026 186 lb -1.3 −42.6 30.6 37.6 4
39 September 8, 2026 184.9 lb -1.1 −43.7 30.3 37.7 16
40 September 9, 2026 184.3 lb -0.6 −44.3 30.1 37.8 16
41 September 10, 2026 182.5 lb -1.8 −46.1 29.6 37.9 16
42 September 11, 2026 181.6 lb -0.9 −47 29.4 38 16
43 September 12, 2026 180.7 lb -0.9 −47.9 29.1 38.1 16
44 September 13, 2026 179.8 lb -0.9 −48.8 28.9 38.2 16
45 September 14, 2026 178.3 lb -1.5 −50.3 28.4 38.3 16
46 September 15, 2026 178.4 lb +0.1 −50.2 28.4 38.3 16
47 September 16, 2026 178.3 lb -0.1 −50.3 28.4 38.3 16

On day 47, John's weight was 178.3 lbs, down 50.3 lbs from 228.6 lbs on day 1 of a doctor supervised water fast.