A fast-digesting dairy protein rich in muscle-building blocks. Paired with strength training, it reliably helps build and preserve muscle and strength. It also lowers the blood sugar rise after meals and can improve blood pressure, blood fats, and insulin sensitivity, mainly in those overweight or at risk for high blood sugar. Downsides are generally mild. (Full Review)
| Marker | Target | Why |
|---|---|---|
| eGFR (estimated glomerular filtration rate) | >90 mL/min/1.73m² | Confirms kidneys can handle higher protein load |
| Fasting glucose | 70–85 mg/dL | Tracks glycemic benefit in at-risk users |
| HbA1c (3-month average blood sugar) | <5.4% | Captures longer-term glucose control |
| Fasting insulin | 2–5 µIU/mL | Reflects insulin sensitivity, often improved by whey |
| Lipid panel (triglycerides, LDL, HDL) | Triglycerides <80 mg/dL | Tracks cardiovascular marker changes |
| Blood pressure | <120/80 mmHg | Whey modestly lowers BP in at-risk groups |
| Body composition (lean mass) | Stable or increasing lean mass | Direct measure of muscle-preservation success |
Cadence: Reassess body composition and targeted metabolic markers at ~8–12 weeks, then every 6–12 months; kidney function checked annually only in those with relevant risk factors.