Peptide research — hub-and-spoke reference
Six hubs organise the condition-and-goal guides on Peptide Authority. Each hub frames the regulatory and evidence picture across a related group of conditions; the spokes below each hub address a distinct search intent with its own evidence base and UK care pathway. Pick a hub to start, or open a specific spoke directly.
Musculoskeletal Recovery
Joints, tendons, ligaments, bone, post-surgery
Conditions where peptide research has focused on tissue repair, tendon and ligament healing, joint inflammation, disc health, and post-surgical recovery.
12 spokes in this hub →Metabolic and Weight
GLP-1 medicines, blood sugar, PCOS, energy
Weight management, type 2 diabetes, PCOS, blood-sugar regulation, and energy metabolism — including licensed GLP-1 medicines and the unlicensed grey-market alternatives.
9 spokes in this hub →Neuro and Mood
Cognitive, anxiety, depression, neuropathy, migraine
Cognitive enhancement, anxiety and stress, depression, neuropathy and neuropathic pain, migraine, and brain-health peptides researched in the UK and EU.
7 spokes in this hub →Immune and Inflammation
Autoimmune, long COVID, Lyme/PTLDS, immune modulation
Immune-modulating and anti-inflammatory peptides researched for autoimmune conditions, long COVID, post-Lyme syndromes, and broader chronic inflammation.
7 spokes in this hub →Skin and Aesthetics
Skin health, pigmentation, cosmetic peptides
Topical and cosmetic peptide research for skin firmness, pigmentation, wrinkles, and hair-loss adjuncts. Distinct from the unlicensed injectable cosmetic peptides covered in Safety Centre.
2 spokes in this hub →Hormonal and Reproductive
Fertility, menopause, ED, thyroid
Hormonal and reproductive-health peptide research — fertility, menopause, erectile dysfunction, thyroid function — and where licensed medicines vs research peptides sit.
7 spokes in this hub →Musculoskeletal Recovery
Hub pagePeptides for Tendon Injuries & Repair
Standard care + evidence tableExplore peptides researched for tendon healing and injury recovery. Compare BPC-157, TB-500, and other peptides studied for tendon repair.
Peptides for Muscle Growth & Recovery
Standard care + evidence tableExplore peptides researched for muscle growth, recovery, and body composition. Compare growth hormone secretagogues, IGF-1, and other anabolic peptides.
Peptides for Joint Health & Cartilage Repair
Standard care + evidence tableExplore peptides researched for joint health, cartilage repair, and osteoarthritis. Compare BPC-157, TB-500, GHK-Cu, and other peptides studied for joint support.
Peptides for Athletic Performance & Recovery
Standard care + evidence tableExplore peptides researched for athletic performance and recovery. Compare BPC-157, TB-500, IGF-1 LR3, and other peptides studied for injury recovery and muscle growth.
Peptides for Post-Surgery Recovery & Wound Healing
Standard care + evidence tableExplore peptides researched for post-surgery recovery and wound healing. Compare BPC-157, TB-500, GHK-Cu, Thymosin Beta-4, and CJC-1295 for surgical recovery.
Peptides for Bodybuilding & Muscle Gain
Standard care + evidence tableExplore peptides researched for bodybuilding and muscle growth. Compare CJC-1295, ipamorelin, MK-677, IGF-1 LR3 and more. WADA status and safety info.
Peptides for Knee Pain & Joint Support
Standard care + evidence tableExplore peptides researched for knee pain and joint health. Compare BPC-157, TB-500, GHK-Cu and other peptides studied for osteoarthritis and knee injuries.
Peptides for Back Pain & Spinal Health
Standard care + evidence tableExplore peptides researched for back pain and spinal health. Compare BPC-157, TB-500, GHK-Cu and other peptides studied for disc and spinal conditions.
Peptides for Osteoarthritis & Joint Health
Standard care + evidence tableResearch on peptides for osteoarthritis including BPC-157, TB-500, and GHK-Cu. Evidence-based UK guide for joint health.
Peptides for Disc Degeneration & Back Pain
Standard care + evidence tableResearch on peptides for intervertebral disc degeneration and chronic back pain. BPC-157, TB-500, and GH secretagogue evidence reviewed.
Peptides for Frozen Shoulder Recovery
Standard care + evidence tableResearch on peptides for frozen shoulder including BPC-157 and TB-500. Evidence-based UK guide for adhesive capsulitis recovery.
Peptides for Bone Density & Osteoporosis Prevention
Standard care + evidence tableResearch on peptides for bone density including calcitonin, PTH, and GH secretagogues. UK NHS osteoporosis context and NICE guidelines.
Metabolic and Weight
Hub pagePeptides for Fat Loss & Weight Management
Standard care + evidence tableComprehensive guide to peptides researched for fat loss and metabolism. Compare semaglutide, AOD-9604, tesofensine, and other weight management peptides.
Peptides for Blood Sugar Management & Glycaemic Control
Standard care + evidence tableExplore peptides researched for blood sugar regulation, insulin sensitivity, and type 2 diabetes management. Compare semaglutide, tirzepatide, liraglutide, and amylin analogues.
Peptides for Heart Health & Cardiovascular Support
Standard care + evidence tableExplore peptides researched for cardiovascular health, including BPC-157, MOTS-c, Thymosin Beta-4, Semaglutide, and VIP. Evidence-based guide to cardiac peptide research.
Peptides for Liver Health & Detoxification
Standard care + evidence tableExplore peptides researched for liver health, hepatoprotection, and detoxification. Compare BPC-157, Thymosin Alpha-1, GHK-Cu, and LL-37 for liver support.
Peptides for Weight Loss
Standard care + evidence tableExplore peptides researched for weight loss in the UK. Compare Wegovy, Mounjaro, AOD-9604 and other weight loss peptides. Evidence-based guide with NHS and NICE context.
Peptides for Diabetes & Blood Sugar Control
Standard care + evidence tableExplore peptides for diabetes and blood sugar control in the UK. GLP-1 agonists for type 2 diabetes, NICE guidelines, NHS prescribing pathways, and clinical evidence.
Peptides for PCOS (Polycystic Ovary Syndrome)
Standard care + evidence tableExplore peptides researched for PCOS management. Compare semaglutide, tirzepatide, kisspeptin-10, MOTS-c and other peptides studied for PCOS symptoms.
Peptides for Chronic Fatigue & CFS/ME
Standard care + evidence tableExplore peptides researched for chronic fatigue syndrome and CFS/ME. Compare MOTS-c, SS-31, humanin, thymosin-alpha-1 and other mitochondrial peptides.
Peptides for Cardiovascular Health & Heart Protection
Standard care + evidence tableResearch on peptides for heart health including natriuretic peptides, BPC-157, and GLP-1 agonists. UK cardiovascular disease context.
Neuro and Mood
Hub pagePeptides for Cognitive Enhancement & Brain Health
Standard care + evidence tableExplore nootropic peptides researched for cognitive enhancement, memory, focus, and neuroprotection. Compare Semax, Selank, BDNF, and other brain peptides.
Peptides for Sleep Optimization & Sleep Quality
Standard care + evidence tableExplore peptides researched for sleep quality, deep sleep enhancement, and circadian rhythm support. Compare DSIP, CJC-1295, Ipamorelin, and other sleep-related peptides.
Peptides for Anxiety & Stress Reduction
Standard care + evidence tableExplore peptides researched for anxiety and stress reduction. Compare Selank, Semax, DSIP, and other peptides studied for anxiolytic and neuroprotective effects.
Peptides for Depression & Mood Support
Standard care + evidence tableExplore peptides researched for depression and mood disorders. Compare Selank, Semax, BPC-157, DSIP and other peptides studied for mood regulation.
Peptides for Neuropathy & Nerve Health
Standard care + evidence tableExplore peptides researched for neuropathy and nerve health. Compare BPC-157, ARA-290, Semax and other peptides studied for nerve repair and pain relief.
Peptides for Migraine Prevention
Standard care + evidence tableResearch on peptides for migraine prevention including CGRP antagonists, BPC-157, and neuropeptide approaches. UK NHS migraine context.
Peptides for Neuropathic Pain & Nerve Damage
Standard care + evidence tableResearch on peptides for neuropathic pain including BPC-157, ARA-290, and Selank. UK-focused evidence for nerve pain management.
Immune and Inflammation
Hub pageImmunity Peptides: Peptides for Immune Support & Function
Standard care + evidence tableImmunity peptides explained: peptides researched for immune support and the immune system, from thymosin alpha-1 to LL-37, with human evidence and UK status.
Peptides for Autoimmune Conditions & Immune Modulation
Standard care + evidence tableExplore peptides researched for autoimmune conditions and immune modulation. Compare Thymosin Alpha-1, KPV, BPC-157, Selank, and LL-37 for immune regulation.
Peptides for IBS & Digestive Disorders
Standard care + evidence tableExplore peptides researched for IBS and digestive disorders. Compare BPC-157, KPV, VIP and other peptides studied for gut inflammation and motility.
Peptides for Respiratory & Lung Health
Standard care + evidence tableExplore peptides researched for respiratory and lung health. Compare VIP, LL-37, thymosin-alpha-1 and other peptides studied for COPD and lung conditions.
Peptides for Long COVID & Post-Viral Syndrome
Standard care + evidence tableExplore peptides researched for Long COVID recovery — thymosin-alpha-1, BPC-157, MOTS-c, SS-31 and selank. UK-focused guide with NHS context and emerging evidence.
Peptides for Fibromyalgia & Chronic Pain
Standard care + evidence tableExplore peptides researched for fibromyalgia and chronic pain — BPC-157, selank, DSIP, thymosin-alpha-1 and beta-endorphin. UK-focused guide with NICE guidelines context.
Peptides for Lyme Disease & Post-Treatment Syndrome
Standard care + evidence tableExplore peptides researched for Lyme disease and PTLDS — LL-37, thymosin-alpha-1, BPC-157, selank and defensins. UK-focused guide with emerging preclinical evidence.
Skin and Aesthetics
Hub pagePeptides for Anti-Ageing & Longevity
Standard care + evidence tableExplore peptides researched for anti-ageing, longevity, and cellular health. Compare Epitalon, GHK-Cu, MOTS-c, and other longevity peptides.
Peptides for Skin Pigmentation & Tanning
Standard care + evidence tableExplore peptides researched for skin pigmentation and tanning, including Melanotan II, Alpha-MSH, PT-141, and GHK-Cu. Includes important safety warnings.
Hormonal and Reproductive
Hub pagePeptides for Sexual Health & Function
Standard care + evidence tableExplore peptides researched for sexual health, libido, and function. Compare PT-141, Melanotan II, Kisspeptin, and other compounds studied for sexual wellness.
Peptides for Fertility & Reproductive Health
Standard care + evidence tableExplore peptides researched for fertility and reproductive health, including Kisspeptin-10, GnRH, PT-141, Oxytocin, and CJC-1295. HPG axis mechanisms explained.
Peptides for Thyroid Health & Function
Standard care + evidence tableExplore peptides researched for thyroid health. Compare TRH, thymosin-alpha-1, CJC-1295 and other peptides studied for Hashimoto's and thyroid function.
Peptides for Erectile Dysfunction & Sexual Performance
Standard care + evidence tableResearch on peptides for erectile dysfunction including PT-141, Melanotan II, and Kisspeptin. UK-focused evidence review for sexual health.
Peptides for Infertility: Male & Female Fertility Research
Standard care + evidence tableResearch on peptides for fertility including Kisspeptin, Gonadorelin, and GnRH analogues. UK NHS and private fertility treatment context.
Peptides for Menopause: Hot Flashes, Bone Loss, Skin & Mood
Standard care + evidence tableResearch on peptides for menopause symptoms including hot flashes, bone loss, skin ageing, and mood changes. UK NHS context included.
Peptides for Thyroid Function & Support
Standard care + evidence tableResearch on peptides for thyroid function including TRH, thyroid peptide bioregulators, and GH interactions. UK NHS thyroid context.
Other guides
Peptides for Hair Growth & Follicle Health
Standard care + evidence tableExplore peptides researched for hair growth and follicle regeneration. Compare GHK-Cu, Thymosin Beta-4, and other peptides studied for hair restoration.
Peptides for Skin Health & Anti-Ageing
Comprehensive guide to peptides for skin health, anti-ageing, and wound healing. Compare GHK-Cu, Matrixyl, Argireline, BPC-157, and other proven cosmetic peptides with research evidence.
Peptides for Gut Health & Digestive Repair
Explore peptides researched for gut healing, digestive repair, and intestinal health. Compare BPC-157, LL-37, and other peptides studied for gastrointestinal conditions.
Peptides for Wrinkle Reduction & Skin Rejuvenation
Comprehensive guide to cosmetic peptides for wrinkle reduction. Compare Argireline, SNAP-8, Leuphasyl, Matrixyl and GHK-Cu for expression lines and collagen restoration.
Peptides for Skin Firmness & Collagen Restoration
Comprehensive guide to collagen-stimulating peptides for skin firmness and elasticity. Compare GHK-Cu, Matrixyl, and other proven peptides that restore dermal structure and combat sagging.
Peptides for Wound Healing & Tissue Repair
Explore peptides researched for wound healing and tissue repair. Compare BPC-157, TB-500, GHK-Cu, LL-37, and Thymosin Beta-4 for wound recovery support.
Peptides for Inflammation & Immune Modulation
Explore anti-inflammatory peptides including BPC-157, Thymosin Alpha-1, LL-37, KPV, and VIP. Research-based guide to peptides studied for inflammation control.
Peptides for Bone Health & Fracture Recovery
Explore peptides researched for bone health, fracture healing, and osteoporosis. Compare BPC-157, TB-500, GHK-Cu, IGF-1 LR3, and growth hormone peptides.
Peptides for Anxiety & Stress Management
Explore peptides researched for anxiety relief and stress management. Compare Selank, DSIP, Semax, and Oxytocin for anxiolytic and calming effects.
Peptides for Energy & Metabolic Optimisation
Explore peptides researched for energy, metabolism, and mitochondrial function. Compare MOTS-c, AOD-9604, CJC-1295, Ipamorelin, and Tesofensine.
Educational content only: These guides provide research-based information for educational purposes. No peptides discussed are approved treatments for any condition. Always consult qualified healthcare professionals before considering any peptide. See the Safety Centre and UK Law hub.