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This week's evidence-graded reads
4 nutrients many adults fall short on
Food-first ways to close the most common gaps.
HbA1c — Three-Month Glucose Average
Glycated haemoglobin gives a 12-week glucose average that cannot be gamed. The pre-diabetic band (5.7–6.4%) is fully reversible — but only if caught. Completes the metabolic trio with fasting glucose and insulin.
HRV — Morning Tracking
Sixty seconds of HRV on waking, tracked as a 7-day rolling average — an objective early signal of accumulated stress and under-recovery before performance drops.
Sauna 4×20 min/week at 80 °C
Four 20-minute sauna sessions per week at 80–90 °C: heat-shock proteins, lower blood pressure, and cohort data on reduced cardiovascular mortality. Highest evidence-level heat protocol.
Vitamin D — 25-Hydroxyvitamin D
The most commonly deficient nutrient in northern-latitude adults. Optimal range 40–60 ng/mL — most labs report 'normal' at 20+. What moves it and why toxicity is real above 100 ng/mL.
Kettlebell Swing EMOM 12 min
Ten two-handed kettlebell swings every minute for 12 minutes — 120 total reps. Posterior-chain power and cardiovascular conditioning from a single compact tool.
Physiological Sigh — Acute Stress Rescue
Two short nasal inhales and one long mouth exhale, repeated three times — the fastest voluntary way to lower heart rate and offload CO2 in under 60 seconds.
Wind-Down Routine — 90 min Pre-Sleep
Dim lights, close work, no screens for the 90 minutes before bed — the transition window is the actual sleep aid. The bedroom is where sleep arrives, not where it is built.
Mixed Nuts & Dark Chocolate (85%)
A 50 g handful of walnuts, almonds, and 85% dark chocolate — 280 kcal and ~200 mg of flavonoids. Polyphenols, magnesium, and omega-3 ALA in under a minute.
Baked Salmon with Brown Rice & Edamame
A ginger-soy salmon bowl with 42 g of protein and 520 kcal — leading the rotation for marine omega-3 (~2.2 g EPA+DHA) and isoflavones in a single dinner.
Rucking 45 min — Weighted Walk
Brisk walking with a 10–15 kg pack for 45 minutes — Zone 2 aerobic effort plus mechanical loading that builds bone density, leg endurance, and posterior-chain resilience.
Weekly digest — 2026-06-07
This week’s digest covers daily longevity protocols, curated menus, and major news from a $435M NewLimit raise to a Phase 1 drug clearing toxic cholesterol.