He said he was 'lonely' and desperate for a wife who could cook and clean

This is due to a lack of suitably trained doctors and nurses in ISIS territory

A British jihadi fighting in Syria known for his social media posts about his difficulties finding a wife has admitted many members of the group are dying due to poor medical treatment.

In an open letter attempting to persuade others to join ISIS in Iraq and Syria, Omar Hussain bemoaned the deaths caused by a lack of properly trained doctors and nurses.

Writing under his nom de guerre Abu Saeed Al-Britani, he claims the rewards offered in life after death should be more important than the money potential medical recruits currently seek in the West.

Omar Hussain, from High Wycombe, Buckinghamshire, has said ISIS fighters are dying due to a lack of suitably trained doctors

When ISIS took over swathes of Syria and Iraq, many doctors fled to Turkey and beyond, Hussain claimed in an open letter written to encourage medical students to flee to ISIS territory

ISIS has suffered a series of setbacks in the past few weeks, most notably its loss of the key city of Ramadi

The letter was published in April last year, but only recently translated and circulated in online forums, where it was obtained by the website Vocativ.

Hussain, who lived with his mother and worked as a security guard for Morrisons before fleeing to Syria, admits that when the 'jihad' began, many local doctors fled to Turkey or beyond.

He wrote: 'I have been to the hospitals up and down the state and so many hospitals lack not only man power but also doctors who are qualified for their jobs.

'I have seen many trainees training others on how to treat wounds, and many errors are committed by these untrained, unqualified, inexperienced helpers.

'The assistance, care and supervision of many brothers goes unchecked.'

Attempting to convince others to join the group, the 27-year-old from High Wycombe, Buckinghamshire, goes on to admit the shortage is so bad untrained fighters are assisting with surgeries.

He writes: 'You do not need to be an expert in your field to make a difference here, even someone with a year or two of studies is a big help.

'As I mentioned previously, we have brothers here who have not studied anything, yet due to the lack of doctors they help out in the hospitals, and many times, even help in major surgeries and operations.'

'The wage here may not be as much as you get in the west but do we live for this life or do we live for the hereafter? Is money more important than the life of your Muslim brother?'

Although it was written in April, the note is the latest sign that ISIS's once complete grip on large swathes of Iraq and Syria is no longer so tight.

Hussain was dubbed the world's 'loneliest jihadi' for a series of tweets last year revealing he was living a life incapable of performing basic everyday tasks. In this tweet, he complains about peeling potatoes

In a second tweet, he admitted he was 'lonely' but was cheered up with a Ferrero Rocher chocolate

The militants recently lost the key city of Ramadi, while air strikes, previously carried out almost entirely by the U.S., are now being conducted with renewed aggression by France, Russia and the UK.

Hussain made headlines in March last year after posting a series of tweets revealing he was living as a hopeless loner.

According to his social media page, Omar Hussain, had difficulty completing the most basic daily jobs including peeling potatoes for his dinner and washing his clothes.

Avidly recording his mundane life through an array of pictures and essays, Hussein seemed to be a lonely, bored fighter, who longed for a wife.