Prof Channa JayasenaClinician

Biography

Professor Channa Jayasena is a Full Professor and Principal Investigator at Imperial College London, and a Consultant in Reproductive Endocrinology and Andrology at St Mary's and Hammersmith Hospitals. He is also Head of Andrology for North-West London Pathology Services and leads the Society for Endocrinology's Specialist Endocrinology Network for Andrology. He qualified in medicine at Cambridge University, trained in diabetes and endocrinology in London, and conducted research at Imperial as a Wellcome Trust Clinical Research Training Fellow and subsequently NIHR Clinical Lecturer. In 2018 he was awarded an NIHR Post-Doctoral Fellowship investigating the metabolic regulation of male infertility, and he was Chief Investigator of the NIHR Health Technology Assessment-funded TestES Consortium examining the efficacy and safety of testosterone replacement in men. He is regularly quoted in the UK press on topics including declining sperm counts, anabolic-steroid misuse, testosterone therapy, and male and female infertility.

References

1. 1.Reproductive Endocrinology – Faculty of Medicine, Imperial College London — Establishes his role as Principal Investigator at Imperial College London, Consultant at St Mary's and Hammersmith Hospitals, Head of Andrology for North-West London Pathology Services, and NIHR Post-Doctoral Fellowship (2018).
2. 2.Dr Channa Jayasena – Imperial College Healthcare NHS Trust Consultant Directory — Confirms consultant role, Cambridge medical qualification, Wellcome Trust fellowship, NIHR Clinical Lectureship, and 2014 Society for Endocrinology Young Endocrinologist Prize.
3. 3.Dr Channa Jayasena – Society for Endocrinology Founding Group — Confirms NIHR HTA TestES Consortium chief investigatorship and leadership of the SfE Specialist Endocrinology Network for Andrology.
4. 4.Society for endocrinology guideline for understanding, diagnosing and treating female hypogonadism – Clinical Endocrinology (Wiley)

Expertise

Cited on

• Hospital discharge / bed-blocking

Stated areas of expertise

• Male infertility and andrology
• Testosterone therapy and hypogonadism
• Reproductive endocrinology
• Anabolic-androgenic steroid misuse
• Menopause and female reproductive disorders
• Sperm disorders and fertility research

Notable achievements

• Awarded the 2014 Young Endocrinologist Prize Lecture by the UK's Society for Endocrinology, described as the highest honour given to a trainee clinician by the society. Source ↗
• Awarded an NIHR Post-Doctoral Fellowship in 2018 to investigate the metabolic regulation of male infertility. Source ↗
• Chief Investigator on an NIHR Health Technology Assessment-funded project (TestES Consortium) to investigate the efficacy and safety of testosterone replacement in men. Source ↗
• Led the Society for Endocrinology's 2024 clinical guideline for understanding, diagnosing and treating female hypogonadism, published in Clinical Endocrinology. Source ↗
• Named lead of the Society for Endocrinology Specialist Endocrinology Network for Andrology. Source ↗

What they’ve said

• “At the national meeting, we asked 300 endocrinologists across the UK; everyone is seeing patients from these clinics every week. They are filling our clinics. We used to see people with adrenal problems and diabetes, and it's really affecting NHS care.”

  Professor at Imperial College London, chair of the Society for Endocrinology Andrology Network · Hospital discharge / bed-blocking · 27 Aug 2026 · Social media misinformation driving men to seek unneeded NHS testosterone therapy, doctors say ↗

• “I think it's a tremendous initiative, and I think it's a great step forward in trying to help women and clinicians understand the full breadth of the seriousness [of the] condition.”

  Expert in reproductive endocrinology at Imperial College London · Hospital discharge / bed-blocking · 27 Aug 2026 · NHS urged to update website after renaming of polycystic ovary syndrome ↗

Source references

1. Social media misinformation driving men to seek unneeded NHS testosterone therapy, doctors saytheguardian.com · 27 Aug 2026
2. NHS urged to update website after renaming of polycystic ovary syndrometheguardian.com · 27 Aug 2026

Contact & links

• Staff pagehttps://www.imperial.nhs.uk/consultant-directory/channa-jayasena
• Staff pagehttps://www.imperial.ac.uk/medicine/departments/metabolism-digestion-reproduction/research/diabetes-endocrinology-metabolism/endocrinology-and-investigative-medicine/reproductive-endocrinology/
• LinkedInhttps://uk.linkedin.com/in/channa-jayasena-78abb140
• ORCIDhttps://scholar.google.com/citations?user=u58pLJgAAAAJpublished here ↗

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