Spermidine / Risk Cancer Research Results

Sper, Spermidine: Click to Expand ⟱

Features:

Spermidine : Polyamine (natural small molecule)
Sources: Found in foods like wheat germ, soybeans, mushrooms, aged cheese, and fermented foods. Typical dietary intake is ~5–20 mg/day.Top food sources = wheat germ > soybeans > aged cheddar > mushrooms > rice bran/legumes.

Ripening / fermentation: especially in aged or fermented foods like cheese, where spermidine and other polyamines can rise during ripening because microbial activity and protein breakdown contribute to amine formation. That is one reason aged cheeses can rank unusually high.
Cooking: boiling and grilling significantly reduced polyamine content in many foods, whereas microwave and sous-vide tended to preserve more.

Primary Actions: Autophagy induction, mild ROS modulation, epigenetic regulation, and modulation of polyamine metabolism.

Pathway	                Effect of Spermidine
Autophagy (ATG genes)	↑ Induction, Beclin-1 activation
mTORC1 signaling	↓ Inhibition, promotes catabolic metabolism
p53/p21	                Modulation via epigenetic changes
Polyamine metabolism	Supports or stresses proliferating cells
ROS / redox balance	Mild modulation; sensitizes cancer cells to ROS stress

Context-dependent risk: High spermidine levels might support tumor growth in polyamine-addicted cancers; dose, timing, and tumor type matter.

Chemo interaction: Generally compatible; not expected to block ROS-dependent therapy at oral doses.

Spermidine, a biogenic polyamine that declines along with aging, shows promise in restoring antitumor immunity by enhancing mitochondrial fatty acid oxidation (FAO)

Spermidine — Cancer vs Normal Cell Effects

Rank	Pathway / Axis	Cancer Cells	Normal Cells	Label	Primary Interpretation	Notes
1	Autophagy induction (ATG program)	↑ autophagy → metabolic stress, growth restraint	↑ autophagy → cytoprotection, homeostasis	Driver	Autophagy-first mechanism	Spermidine robustly induces autophagy independent of mTOR inhibition; cancer cells are more vulnerable to enforced catabolism
2	Epigenetic regulation (histone acetylation)	↓ histone acetylation (via HAT inhibition)	↓ acetylation (adaptive)	Driver	Chromatin-mediated transcriptional reprogramming	Spermidine inhibits histone acetyltransferase activity, promoting a pro-autophagic, anti-proliferative transcriptional state
3	Polyamine metabolism / homeostasis	Disrupted polyamine balance	Homeostatic buffering	Driver	Metabolic vulnerability	Cancer cells are highly dependent on polyamine flux; spermidine perturbs this balance
4	AMPK / mTOR nutrient-sensing axis	↑ AMPK; ↓ mTOR signaling	↑ AMPK (adaptive)	Secondary	Catabolic pressure	Energy-sensing pathways reinforce autophagy and growth suppression
5	Mitochondrial function / bioenergetics	↓ metabolic flexibility	↑ mitochondrial efficiency	Secondary	Energy stress vs optimization	Autophagy-driven mitochondrial turnover stresses tumor bioenergetics while benefiting normal cells
6	Reactive oxygen species (ROS)	↑ ROS (secondary, stress-linked)	↓ ROS	Secondary	Metabolism-linked redox shift	ROS changes arise indirectly from autophagy and mitochondrial remodeling, not direct redox chemistry
7	NRF2 antioxidant response	↑ NRF2 (adaptive, secondary)	↑ NRF2 (protective)	Adaptive	Redox homeostasis reinforcement	NRF2 activation reflects compensatory antioxidant signaling rather than a cytotoxic mechanism
8	Cell cycle / proliferation	↓ proliferation / ↑ arrest	↔ spared	Phenotypic	Cytostatic growth limitation	Growth inhibition reflects sustained autophagy and epigenetic effects
9	Apoptosis sensitivity	↑ sensitivity to apoptosis (context-dependent)	↓ apoptosis	Phenotypic	Threshold-dependent cell death	Apoptosis occurs when catabolic stress exceeds adaptive capacity

Risk, Risk: Click to Expand ⟱

Source:

Type:

Risk: by definition reduces risk of disease or cancer.
Down Target direction of risk indicates lower cancer risk.
ChemoPreventive also mean lower cancer risk. But for Chemopreventive an up arrow indicates more preventive.

Cancer Risk Impact Score (CRIS)
CRIS scale:
–5 = very strong risk reduction
–4 = strong risk reduction
–3 = moderate risk reduction
–2 = modest risk reduction
–1 = weak / context-dependent
0 = neutral


CRIS  Exposure / Compound  Evidence  Cancers  Notes


-5  Exercise (overall)
VStrong Hum  BC, CRC, Endo, PCa, Liv
↓insulin/IGF-1, ↓inflammation, ↑immune surveillance, ↓hormones



-5  Aerobic + resistance  VStrong Hum  Broad inc + mort
Best overall exercise synergy



-4  Aerobic exercise (mod–vig)  VStrong Hum  BC, CRC, Endo
Dose–response; ↓visceral fat



-4  Resistance training (alone)  Strong Hum  BC, CRC
↑insulin sensitivity; ↑lean mass



-3  High-intensity interval training  Mod–Strong Hum  BC, CRC
↑AMPK; ↑mitochondrial function; adherence matters



-2  NEAT / low-intensity activity  Moderate Hum  CRC
↓sedentary harm



-5  Cruciferous vegetable pattern  Strong Hum  Lung, CRC, BC, PCa
↑NRF2, ↓CYP1; ITC synergy



-5  Sunlight exposure (physiologic)  Strong Hum  CRC, BC, PCa
↑circadian alignment, ↑immune effects beyond vitamin D



-4  Fasting (metabolic pattern)
Strong Mech + Hum  BC, CRC, PCa 
↓IGF-1, ↓mTOR, ↑autophagy



-4  Curcumin
Hum + Pre  GI, BC, PCa
↓NF-κB, ↓STAT3



-4  Sulforaphane
Hum + Pre  Lung, CRC, BC
↑NRF2, ↓HDAC



-4  PEITC
Hum + Pre  Lung, CRC, PCa
↓CYP1A2, ↑apoptosis



-4  EGCG (tea matrix)
Strong Hum  GI, PCa, BC
↓angiogenesis; tea matrix superior to extract



-4  Lycopene
Strong Hum  PCa
↓oxidative DNA damage



-4  Apigenin
Pre + Diet Hum  BC, PCa, CRC 
↓PI3K-AKT, ↑p53



-4  Luteolin
Pre + Diet Hum  Lung, CRC, BC 
↓STAT3, ↓EMT



-4  Kaempferol
Diet Hum  Ov, Panc, Lung
↓VEGF, ↑apoptosis



-4  Fisetin
Pre + Early Hum  CRC, PCa, Mel
↓mTOR; senolytic activity



-4  Ellagic acid → Urolithin A
Hum (microbiome)  CRC, PCa, BC
↑mitophagy, ↓ER/AR signaling



-3  Omega-3 (EPA/DHA)
Strong Hum  CRC, BC
↓inflammation, ↓COX-2



-3  Vitamin D3 (supp)
Obs + RCT  CRC, BC
U-shaped response; ↓proliferation



-3  Garlic (allicin)
Mod Hum  GI
↓inflammation, ↓H. pylori



-3  Mushroom beta-glucans
Hum adjunct  GI, BC
↑NK cells, ↑immune surveillance



-3  Melatonin
Hum + Mech  BC, PCa
↓estrogen signaling, ↑circadian regulation



-3  Coffee (whole)
Strong Hum  Liv, Endo
↓fibrosis, ↓inflammation



-2  Quercetin
Limited Hum  Lung, CRC
Senolytic; ↓PI3K signaling



-2  Resveratrol
Limited Hum  CRC, BC
↓NF-κB; low bioavailability



-2  I3C / DIM
Mod Hum  BC, Cerv
↑2-OH estrogen, ↓ER signaling



-2  Thymoquinone
Early Hum  BC, CRC
↑apoptosis, ↓NF-κB



-2  Beta-carotene (food)
Hum  Lung
Antioxidant only in whole-food context



-1  Vitamin K2 (MK-4/7)
Limited Hum  Liv, PCa
↓proliferation, ↑differentiation



-1  Boron
Obs  PCa, Lung
↓inflammation; hormone modulation



0  Vitamin C (oral)
Strong Hum  —
Neutral overall effect



0  Genistein (soy)
Strong Hum  BC, PCa
Timing-dependent effects



0  Selenium (diet)
Mixed Hum  PCa
Narrow therapeutic window



0  Capsaicin
Mixed  Gastric
Dose-dependent effects



+2  Vitamin E (alpha only)
Strong RCT  PCa
Increased risk signal



+2  Green tea extract (high-dose)
Case reports  Liv
Hepatotoxicity reported



+4  Beta-carotene (supplement)
Strong RCT  Lung (smokers)
Increased lung cancer risk in smokers



+5  Alcohol (ethanol)
Strong Hum  BC, Liv, Eso
Linear increase in cancer risk




Evidence
Hum        human data
VStrong    very strong
Strong     strong
Mod        moderate
Obs        observational
Pre        preclinical
RCT        randomized controlled trial
Mech       mechanistic
Adjunct    adjunct clinical use

Scientific Papers found: Click to Expand⟱

5802-

Sper,

Spermidine reduces cancer-related mortality in humans

Review,

Var,

EP300↓, Risk↓,

Showing Research Papers: 1 to 1 of 1

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 1

Pathway results for Effect on Cancer / Diseased Cells:

Proliferation, Differentiation & Cell State ⓘ

EP300↓, 1,

Functional Outcomes ⓘ

Risk↓, 1,
Total Targets: 2

Pathway results for Effect on Normal Cells:

Total Targets: 0

Scientific Paper Hit Count for: Risk, Risk

Query results interpretion may depend on "conditions" listed in the research papers.
Such Conditions may include : 
  -low or high Dose
  -format for product, such as nano of lipid formations
  -different cell line effects
  -synergies with other products 
  -if effect was for normal or cancerous cells

Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:386  Target#:785  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

Spermidine / Risk Cancer Research Results

Pathway results for Effect on Cancer / Diseased Cells:

Proliferation, Differentiation & Cell State ⓘ

Functional Outcomes ⓘ

Pathway results for Effect on Normal Cells:

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