Sulforaphane for Health & Longevity - Quick Reference Sheet
evipedia.ai ← Back

Sulforaphane for Health & Longevity

Created on 07/06/2026 – Quick Reference based on Evidence Review created using AI4L / Opus 4.8 – Audit

Sulforaphane, from raw broccoli and especially broccoli sprouts, switches on the body's own antioxidant and detoxification defenses rather than acting as an antioxidant itself. Its most reliable human effect is engaging those defenses; it modestly lowers blood sugar and inflammation. Brain-protection and longevity claims stay speculative. It is low-risk, though many products deliver little active compound. (Full Review)

Protocol

Dose
10–40 mg/day
About 25–100 µmol; no established optimal, longevity users often target the lower-to-middle range
Format
Sprouts, extract, or enzyme-paired supplement
Raw broccoli sprouts, standardized extract, or glucoraphanin plus myrosinase (e.g., Avmacol, Prostaphane)
Timing
With a meal, once daily
Splitting into morning and evening can sustain exposure given the short half-life
Time to effect
Detox defenses
Hours–days
Enzyme induction and detoxification changes
Blood sugar & inflammation
Weeks–months
Clinically meaningful shifts with consistent use
Behavior
Weeks–months
Autism-related behavioral change in trials

Benefits

Contraindications
  • Pregnancy or breastfeeding (supplemental doses)
  • Iodine deficiency or uncontrolled thyroid disease
  • Warfarin without INR monitoring
  • Multiple potent glucose-lowering agents
    •
Key Interactions
  • Antidiabetic drugs (insulin, metformin, glipizide, empagliflozin)
  • Anticoagulants and antiplatelets (warfarin, apixaban, aspirin, clopidogrel)
  • Over-the-counter drugs (acetaminophen, ibuprofen, naproxen)
  • Nrf2-activating and antioxidant supplements (curcumin, resveratrol, N-acetylcysteine)
  • Blood-sugar- and blood-pressure-lowering supplements (berberine, alpha-lipoic acid, chromium, beetroot, magnesium, garlic)
  • Chemotherapy and radiotherapy
    •

Risk & Side Effects

  • High: Gastrointestinal discomfort
    •
  • Medium: Thyroid-function effects
    •
  • Low: Additive blood-sugar lowering; interference with drug-metabolizing enzymes
    •
  • Speculative: Pro-oxidant effects at very high doses; uncertain safety in pregnancy and breastfeeding
    •

Monitoring

Marker Target Why
Fasting glucose 75–90 mg/dL Tracks the main metabolic effect
HbA1c < 5.4% Sustained blood-sugar change over months
hs-CRP < 1.0 mg/L Gauges systemic inflammation targeted by the compound
ALT / AST ALT < 25 U/L (men) / < 20 U/L (women) Monitors liver-fat and liver-stress endpoints and safety
TSH 0.5–2.5 mIU/L Screens for any thyroid impact, especially at higher doses
Fasting lipid panel Triglycerides < 90 mg/dL; HDL > 50 mg/dL Follows possible cardiovascular and blood-fat effects

Cadence: Baseline before starting, recheck at 8–12 weeks, then every 6–12 months during continued use

Qualitative Assessment

  • Digestive comfort and tolerability (absence of persistent bloating or nausea)
  • Energy levels and daytime alertness
  • Cognitive clarity and focus
  • General sense of resilience during high-pollution or high-stress periods
Not medical advice. Educational distillation of a single evidence review. Confirm any decision with a qualified clinician, especially in the presence of prescription drugs or chronic conditions.