Dr Leighton Seal

Consultant Endocrinologist


Clinical Interests

  • General endocrinology
  • PCOS
  • Thyroid disorders
  • Testosterone disorders in men
  • Erectile dysfunction
  • HRT in males and females
  • Transsexual medicine

Professional Memberships

  • Fellow of Royal College of Physicians
  • Recognised by Gender Recognition
  • Panel Member of Endocrine Society
  • Member of Society for Endocrinology

Useful Links


Personal profile

Dr Leighton Seal trained at St Bartholomew’s hospital London and his post graduate training was at the Hammersmith Hospital and Imperial College London. His Welcome Trust Clinical Training Fellowship was in the Hypothalamic control of reproduction and also food intake and obesity.

Dr Seal is a consultant and Honorary Senior Lecture in Endocrinology and Diabetes at St George’s Hospital Tooting where he runs a dedicated Men’s health clinic to treat erectile dysfunction and the associated metabolic disturbances in the diabetic population as well as testosterone disorders. There is also an active pituitary service at this site with three pituitary surgeons.

Dr Seal is also Consultant Endocrinologist at the Gender Identity Clinic at Charing Cross Hospital London where he is responsible for the diagnosis of endocrine disorders of these patients and supervision of the cross gender hormone replacement of both preoperative and post-operative patients. This is a national referral service for patients with gender disorders at present sees over 2100 patients per year both male to female and female to male.

Dr Seal's research interests are in the effects of erectile dysfunction and its treatment on the control of diabetes and the role endocrine abnormalities in the development of transsexuality.

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