{"id":1988,"date":"2025-11-07T22:51:49","date_gmt":"2025-11-08T03:51:49","guid":{"rendered":"https:\/\/www.madischu.com\/?p=1988"},"modified":"2025-11-07T22:51:49","modified_gmt":"2025-11-08T03:51:49","slug":"antioxidants-produced-by-the-human-body","status":"publish","type":"post","link":"https:\/\/www.life360coach.com\/index.php\/2025\/11\/07\/antioxidants-produced-by-the-human-body\/","title":{"rendered":"Antioxidants Produced by the Human Body"},"content":{"rendered":"
Our body produces antioxidants.
\nBelow is a <\/span>comprehensive map<\/span><\/span> of the <\/span>major endogenous antioxidants<\/span><\/span> (produced by the human body), their <\/span>biosynthesis pathways<\/span><\/span>, <\/span>primary roles<\/span><\/span>, and <\/span>links to health & wellbeing<\/span><\/span>.
\n<\/span><\/span><\/span>All are <\/span>redox-active<\/span><\/span>, <\/span>recycled<\/span><\/span> (not consumed like dietary vitamins), and <\/span>tightly regulated<\/span><\/span> by <\/span>Nrf2-ARE signaling<\/span><\/span> (the master antioxidant response pathway)<\/span><\/span><\/span><\/p>\n
\n

1. <\/span>Core Enzymatic Antioxidants<\/span><\/span><\/span><\/span>(Protein-based, transcriptionally induced via Nrf2)<\/span><\/span><\/span><\/span><\/p>\n

\n\n\n\n\n\n\n\n\n
\n
Antioxidant<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Biosynthesis \/ Cofactors<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Primary Reaction<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Health Impact<\/span><\/span><\/span><\/div>\n<\/th>\n<\/tr>\n
\n
Superoxide Dismutase (SOD1\/2\/3)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 SOD1 (Cu\/Zn, cytosol) <\/span><\/span> \u2022 SOD2 (Mn, mitochondria) <\/span><\/span> \u2022 SOD3 (Cu\/Zn, extracellular)<\/span><\/span><\/div>\n<\/td>\n
\n
2O\u2082\u207b + 2H\u207a \u2192 H\u2082O\u2082 + O\u2082<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 \u2193Mitochondrial ROS \u2192 prevents Parkinson\u2019s, ALS <\/span><\/span> \u2022 SOD2\u2191 in centenarians; SOD2\u207b\/\u207b mice die at ~3 weeks<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Catalase (CAT)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Heme-containing, peroxisomes<\/span><\/span><\/div>\n<\/td>\n
\n
2H\u2082O\u2082 \u2192 2H\u2082O + O\u2082<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 Detoxifies lipid peroxides; \u2193 in Alzheimer\u2019s plaques<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Glutathione Peroxidase (GPx1\u20138)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Selenocysteine enzymes; <\/span><\/span>Se<\/span><\/span><\/span> required<\/span><\/span><\/div>\n<\/td>\n
\n
2GSH + H\u2082O\u2082 \u2192 GSSG + 2H\u2082O<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 GPx4: <\/span><\/span>ferroptosis defense<\/span><\/span><\/span> (lipid repair) <\/span><\/span> \u2022 GPx1\u2193 in CVD, diabetes<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Peroxiredoxins (PRDX1\u20136)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Thioredoxin-dependent<\/span><\/span><\/div>\n<\/td>\n
\n
ROOH + 2e\u207b \u2192 ROH + H\u2082O<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 PRDX2: neuronal H\u2082O\u2082 sensor; PRDX3: mitochondrial<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Thioredoxin (Trx1\/2)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
NADPH \u2192 Trx reductase \u2192 Trx<\/span><\/span><\/div>\n<\/td>\n
\n
Oxidized protein-SH \u2192 reduced<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 \u2191Cell survival in ischemia; \u2193NF-\u03baB inflammation<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

2. <\/span>Non-Enzymatic Small-Molecule Antioxidants<\/span><\/span><\/span><\/span>(Synthesized de novo or recycled)<\/span><\/span><\/span><\/span><\/p>\n

\n\n\n\n\n\n\n\n\n
\n
Antioxidant<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Synthesis Pathway<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Redox Cycle<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Health Role<\/span><\/span><\/span><\/div>\n<\/th>\n<\/tr>\n
\n
Glutathione (GSH)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u03b3-Glu-Cys + Gly \u2192 GSH (<\/span><\/span>GCL<\/span><\/span><\/span> rate-limiting, Nrf2-induced)<\/span><\/span><\/div>\n<\/td>\n
\n
GSH \u21cc GSSG (via GR + NADPH)<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 <\/span><\/span>Master antioxidant<\/span><\/span><\/span>: 1\u201310 mM inity in cells <\/span><\/span> \u2022 GSH\/GSSG ratio = <\/span><\/span>cellular redox poise<\/span><\/span><\/span> \u2022 \u2193GSH: aging, cancer, NASH, autism<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Coenzyme Q10 (Ubiquinol, UQH\u2082)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Mevalonate \u2192 polyprenyl tail + benzoquinone (liver, mitochondria)<\/span><\/span><\/div>\n<\/td>\n
\n
UQH\u2082 \u2192 UQ (Complex I\/III) \u2192 UQH\u2082 (recycled)<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 Electron carrier + lipid-soluble antioxidant <\/span><\/span> \u2022 \u2193UQH\u2082 in heart failure, statin myopathy<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Uric Acid<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Purine catabolism (xanthine oxidase)<\/span><\/span><\/div>\n<\/td>\n
\n
Urate \u2192 allantoin (uricase absent in humans)<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 Scavenges ONOO\u207b, \u00b7OH; <\/span><\/span>70% plasma antioxidant capacity<\/span><\/span><\/span> \u2022 \u2191Urate: gout; \u2193urate: MS, Parkinson\u2019s<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Bilirubin<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Heme \u2192 biliverdin \u2192 bilirubin (HO-1, Nrf2-induced)<\/span><\/span><\/div>\n<\/td>\n
\n
Bilirubin \u21cc biliverdin (BVR)<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 Potent peroxyl radical scavenger <\/span><\/span> \u2022 Mild hyperbilirubinemia (Gilbert\u2019s) = <\/span><\/span>\u2193CVD risk 50%<\/span><\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Melatonin<\/span><\/span><\/span> (covered earlier)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Tryptophan \u2192 serotonin \u2192 NAS \u2192 melatonin (pineal + extra-pineal)<\/span><\/span><\/div>\n<\/td>\n
\n
Direct ROS scavenger; recycled via AFMK<\/span><\/span><\/div>\n<\/td>\n
\n
See prior response<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

3. <\/span>Secondary \/ Conditional Antioxidants <\/span><\/span><\/span><\/span>(Induced under stress)<\/span><\/span><\/span><\/span><\/p>\n

\n\n\n\n\n\n\n\n
\n
Molecule<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Trigger<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Role<\/span><\/span><\/span><\/div>\n<\/th>\n<\/tr>\n
\n
Metallothionein (MT1\/2)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Heavy metals, ROS, glucocorticoids<\/span><\/span><\/div>\n<\/td>\n
\n
Binds Zn\/Cu; scavenges \u00b7OH; \u2193 in aging brain<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Ferritin<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Iron + IRP-1\/2<\/span><\/span><\/div>\n<\/td>\n
\n
Sequesters Fe\u00b2\u207a \u2192 prevents Fenton reaction<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Ceruloplasmin<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Copper transport protein<\/span><\/span><\/div>\n<\/td>\n
\n
Oxidizes Fe\u00b2\u207a \u2192 Fe\u00b3\u207a (safe storage)<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Heme Oxygenase-1 (HO-1)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Nrf2 \u2192 Bach1 displacement<\/span><\/span><\/div>\n<\/td>\n
\n
\u2191Bilirubin + CO (anti-apoptotic)<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

4. <\/span>Redox Signaling & Wellbeing
\n<\/span><\/span><\/span><\/span>These antioxidants are <\/span>not just scavengers<\/span><\/span> \u2014 they <\/span>shape cellular decisions<\/span><\/span>:<\/span><\/span><\/span><\/p>\n

\n\n\n\n\n\n\n\n
\n
Function<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Mechanism<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Wellbeing Link<\/span><\/span><\/span><\/div>\n<\/th>\n<\/tr>\n
\n
Redox Tone<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
GSH\/GSSG, Trx-ox\/red, Prx hyperoxidation<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 <\/span><\/span>Optimal ratio<\/span><\/span><\/span> \u2192 growth, repair <\/span><\/span> \u2022 Chronic oxidation \u2192 senescence<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Nrf2-ARE Axis<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
ROS \u2192 KEAP1 dissociation \u2192 Nrf2 \u2192 200+ genes<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 <\/span><\/span>Exercise, fasting, sauna<\/span><\/span><\/span> \u2191Nrf2 \u2192 longevity<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Hormesis<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Low-dose ROS \u2192 adaptive antioxidant response<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 Explains benefits of <\/span><\/span>HIIT, CR, sulforaphane<\/span><\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Circadian Redox<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
BMAL1\/CLOCK \u2191GPx, Prx; melatonin peaks at night<\/span><\/span><\/div>\n<\/td>\n
\n
\u2022 Shift work \u2192 \u2193GSH, \u2191cancer\/CVD<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

5. <\/span>Clinical \/ Aging Correlations<\/span><\/span><\/span><\/span><\/p>\n

\n\n\n\n\n\n\n\n
\n
Condition<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Antioxidant Defect<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Intervention<\/span><\/span><\/span><\/div>\n<\/th>\n<\/tr>\n
\n
Neurodegeneration<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u2193SOD2, GPx4, GSH in substantia nigra<\/span><\/span><\/div>\n<\/td>\n
\n
NAC, Se, \u03b1-lipoic acid<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Cardiovascular<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u2193UQH\u2082, HO-1; \u2191xanthine oxidase<\/span><\/span><\/div>\n<\/td>\n
\n
CoQ10, allopurinol<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Diabetes<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u2193GSH, \u2191GSSG \u2192 insulin resistance<\/span><\/span><\/div>\n<\/td>\n
\n
\u03b1-Lipoic acid (600 mg) \u2191GSH<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Cancer<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Nrf2 hyperactivation in tumors (gain-of-function)<\/span><\/span><\/div>\n<\/td>\n
\n
Avoid high-dose antiox in smokers<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

6. <\/span>Boosting Endogenous Antioxidants (Evidence-Based)<\/span><\/span><\/span><\/span><\/p>\n

\n\n\n\n\n\n\n\n\n\n
\n
Strategy<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Target<\/span><\/span><\/span><\/div>\n<\/th>\n
\n
Effect Size<\/span><\/span><\/span><\/div>\n<\/th>\n<\/tr>\n
\n
Intermittent Fasting \/ CR<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u2191Nrf2, GSH, SOD2<\/span><\/span><\/div>\n<\/td>\n
\n
+40% GSH in 24 h fast<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Exercise (HIIT)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u2191SOD2, GPx1 in muscle<\/span><\/span><\/div>\n<\/td>\n
\n
+100% within 3 h<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Sulforaphane (broccoli sprouts)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
Nrf2 stabilizer<\/span><\/span><\/div>\n<\/td>\n
\n
3\u20135\u00d7 antioxidant enzymes<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Cold\/Warm Exposure<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u2191HO-1, bilirubin<\/span><\/span><\/div>\n<\/td>\n
\n
+50% HO-1 in 2 h cold<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Sleep & Melatonin<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
\u2191GSH recycling<\/span><\/span><\/div>\n<\/td>\n
\n
+25% nocturnal GSH<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n
\n
Selenium (100\u2013200 \u00b5g)<\/span><\/span><\/span><\/div>\n<\/td>\n
\n
GPx4 synthesis<\/span><\/span><\/div>\n<\/td>\n
\n
\u2191GPx activity 30%<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\n

Bottom Line<\/span><\/span><\/span><\/strong><\/p>\n

Your body operates a self-renewing antioxidant network, comprising GSH, SOD, GPx, CoQ10, bilirubin, and melatonin, all interconnected via Nrf2 and the circadian clock.<\/span>
\nWellbeing = maintaining youthful redox poise (not zero ROS).<\/span>
\nLifestyle > supplements<\/span>: fasting, exercise, sleep, and plant Nrf2 activators amplify<\/span> this system far beyond pills.<\/span><\/span><\/span><\/div>\n<\/div>\n
Source Grok X AI<\/div>\n","protected":false},"excerpt":{"rendered":"

Our body produces antioxidants. Below is a comprehensive map of the major endogenous antioxidants (produced by the human body), their biosynthesis pathways, primary roles, and links to health & wellbeing. All are redox-active, recycled (not consumed like dietary vitamins), and tightly regulated by Nrf2-ARE signaling (the master antioxidant response pathway) 1. Core Enzymatic Antioxidants(Protein-based, transcriptionally […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,24],"tags":[127],"class_list":["post-1988","post","type-post","status-publish","format-standard","hentry","category-health-wellness","category-the-endocrine-system","tag-antioxidants"],"_links":{"self":[{"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/posts\/1988","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/comments?post=1988"}],"version-history":[{"count":0,"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/posts\/1988\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/media?parent=1988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/categories?post=1988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.life360coach.com\/index.php\/wp-json\/wp\/v2\/tags?post=1988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}