Investigation and inquest
On the 13th June 2024, an investigation was commenced into the death of Joshua William Leatham-Prosser, born on the 5th March 1998.
The investigation concluded at the end of the Inquest on the 20th February 2025.
The Medical Cause of Death was:
1 (a) Urinary Sepsis
(b) Severe acute on chronic cystitis and pyelonephritis
(c) Chronic ketamine use
The conclusion of the Inquest recorded
Drug Related Death
Circumstances of the death
Mr Leatham-Prosser had started misusing ketamine in 2019. He developed bladder problems and significant pain which then led to self medicating with ketamine for pain relief. In October 2022 he fell under the care of the urology team at University College Hospital London where he was offered surgery in October 2024. On 5/6/24, following concerns for his welfare, Mr Leatham-Prosser was found unresponsive in the hallway of his home address by paramedics. He was pronounced dead at the scene. Dorset Police investigated and found no evidence of third party involvement.
Coroner’s concerns
1. During the inquest evidence was heard that:
i. Mr Leatham-Prosser had started taking Cannabis as a young teenager and at the age of 17 progressed on to taking ketamine. He did not perceive this to be any more harmful than cannabis.
ii. The evidence before the inquest was that ketamine was a highly addictive drug.
iii. Ketamine cystitis is an emerging epidemic in the younger population with access to this drug seemingly easy to acquire. The extremely harmful effect of this drug on the bladder is akin to acid attacks on the skin.
iv. Patients seen by urologists are abusing the drug to the extent required to damage the urinary tract to the point of requiring major reconstructive surgery. The only way patients know how to relieve their symptoms is with ongoing ketamine use. A vicious cycle develops worsening the urological condition and reinforces dependence on the drug with high rates of relapse.
2. I have concerns with regard to the following:
i. The highly addictive and harmful nature of a drug with a classification of Class B.
ii. The increasing number of young people presenting with potentially fatal health problems linked to its use.