Lycopene, the red antioxidant in tomatoes, is most consistently linked to lower prostate cancer risk, with weaker links to lower overall cancer, heart disease, and earlier death. Cooked tomato foods show the strongest, lowest-risk signal; isolated high-dose supplements often fail to match it. Side effects are minor and reversible. (Full Review)

Protocol

Standard Intake

10–30 mg/day

Replicates high-tomato dietary patterns; no established "therapeutic dose"

Timing & Pairing

With a fatty meal

Once daily with the largest fat-containing meal; clock time unimportant given long half-life

Source

Cooked tomato products

Whole-food approach captures matrix synergy; standardized softgels offer dose consistency

Time to effect

Cancer & Mortality Signal

Years

Benefits derive from sustained high intake over years; no defined treatment course

Skin & Biomarker Shifts

Weeks to months

Tissue saturation and measurable effects such as skin UV protection require consistent intake

Plasma Rise

Within days

Plasma lycopene rises within days; long plasma half-life of roughly 5–7 days

Benefits

High: Reduced prostate cancer risk

Medium: Lower all-cause and cardiovascular mortality; reduced total cancer incidence and mortality

Low: Protection against UV-induced skin damage; improved fasting blood glucose; improved male fertility markers

Speculative: Cognitive and neuroprotective support; bone and periodontal health

Contraindications

Carotenoid hypersensitivity

Pregnancy and breastfeeding (limit to dietary amounts)

Surgery within 1–2 weeks (discontinue high-dose supplements)

Heavy smokers (≥20 cigarettes/day) on high-dose isolated carotenoids

Key Interactions

Prescription anticoagulants and antiplatelets (warfarin, clopidogrel, apixaban)

Over-the-counter agents (aspirin, NSAIDs such as ibuprofen, fish oil)

Competing carotenoids (beta-carotene, lutein, zeaxanthin)

Cholesterol-lowering and fat-blocking agents (orlistat, bile acid sequestrants, plant stanol/sterol products)

Risk & Side Effects

High: Lycopenodermia

Medium: Gastrointestinal upset

Low: Bleeding risk at high doses

Speculative: Pro-oxidant effects at supraphysiologic doses; interactions with smoking-related cancer risk

Monitoring

Marker	Target	Why
Plasma lycopene	≥ 0.3–0.5 μmol/L	Confirms adequate intake/absorption
hs-CRP	< 1.0 mg/L	Tracks systemic inflammation lycopene may lower
LDL-C	< 100 mg/dL (lower if high cardiovascular risk)	Oxidized LDL is a proposed lycopene target
Fasting blood glucose	70–85 mg/dL	Lycopene may modestly lower it in diabetes
PSA (men)	< 1.0 ng/mL (age-dependent)	Relevant to the prostate-cancer rationale

Cadence: Baseline, then every 6–12 months where a specific goal exists

Qualitative Assessment

Skin appearance and resilience to sun, including any orange discoloration of palms/soles signaling excessive intake
Digestive comfort with tomato-based or supplemental sources
General energy and recovery, recognizing these are nonspecific

Lycopene for Health & Longevity

Protocol

Benefits

Risk & Side Effects

Monitoring

Qualitative Assessment