A natural building block of genetic material that the body also uses to build brain-cell membranes and connections. Generally well tolerated, but human evidence is thin and comes mostly from combination products in early memory loss, with small, inconsistent benefits. Mechanistically promising yet clinically unproven — best seen as active, unsettled research. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Fasting glucose | 75–90 mg/dL | Screens for the insulin-resistance signal seen with high-dose uridine in animals |
| HbA1c | < 5.4% | Tracks longer-term blood sugar, catching metabolic drift the animal data flag |
| ALT / AST | ALT < 25 U/L; AST < 25 U/L | Detects hepatic fat/injury, the second animal metabolic concern |
| Triglycerides | < 100 mg/dL | Elevated triglycerides accompany hepatic fat accumulation |
| Uric acid | 3.5–6.0 mg/dL | General nucleotide-metabolism marker for high-intake users |
Cadence: Baseline before starting; ~3 months after starting, then every 6–12 months (sooner if metabolic risk factors are present)