MagDI™Only at Auralia, Dublin

A less invasive way to lasting weight loss.

MagDI™ is keyhole weight loss surgery that works with your body's own hunger and fullness hormones. Find out if it could suit you in a free, one-to-one assessment with Dr John Loy, in Dublin or online.

  • Typically one night in hospital
  • Back to desk work in one to two weeks
  • Nothing left in your body afterwards
  • Your surgeon and aftercare stay in Ireland

Free. No obligation.

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Dr John Loy, Consultant Bariatric and Metabolic Surgeon at Auralia
Dr John Loy
  • Almost 3,000 weight loss procedures
  • Ireland's first MagDI™ certified surgeon

Your Free Assessment With Dr Loy

An honest, one-to-one conversation about your weight, your health and your options. It costs nothing and commits you to nothing.

A patient coordinator calls you within one working day to arrange it. No long waiting list.

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What you get
  • Time with the surgeon himself, in Dublin or online
  • He listens to your health, your history and what you have already tried
  • Straight advice on what could work for you, even if that is no surgery at all
  • A written plan and one all-inclusive price, before you decide anything

“Meeting Dr Loy to discuss the best surgery for me, I felt it was the first time in my life I was genuinely being listened to and not just blamed or judged for being overweight.”

Sarah K., Trustpilot review, April 2026
What is in it for you

Why People Ask Us About MagDI™

  • A smaller operation

    Keyhole surgery, typically one night in hospital. Most people are back at desk work within one to two weeks.

  • It works with your body

    MagDI™ raises your body's own fullness hormone and lowers the hormones that drive hunger, so you feel satisfied with less.

  • Weight loss that lasts

    It works in the same proven way as gastric bypass, the operation surgeons have relied on for decades for strong, lasting weight loss.

  • Help with type 2 diabetes

    Procedures of this kind are among the most effective for blood sugar control.

  • Nothing left behind

    Two small magnets do their work and then pass naturally, usually within two to three weeks. There is no implant to maintain.

  • Your options stay open

    Your gut keeps its normal route as well as the new one, which keeps future treatment options open.

Every person is different. Dr Loy will tell you honestly whether MagDI™ is right for you.

In plain words

How MagDI™ Works

  1. Illustration of the digestive system, with the two small magnets meeting between two sections of the gut. Anatomical artwork courtesy of GT Metabolic

    During keyhole surgery

    While you are asleep, Dr Loy places two small magnets in your gut. They hold two sections gently together.

  2. Illustration of the magnets, still joined together, moving on through the intestine after the new connection has formed. Anatomical artwork courtesy of GT Metabolic

    Over two to three weeks

    Your body forms a new, shorter route for food between them. The magnets then pass naturally.

  3. Illustration of food, shown in yellow, taking the shorter route through the new connection. Anatomical artwork courtesy of GT Metabolic

    From then on

    Part of what you eat takes the shorter route. You feel full sooner, hunger falls and your body absorbs less.

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Dr Loy will talk you through every step at your assessment.

Dr John Loy, Consultant Bariatric and Metabolic Surgeon at Auralia
Who looks after you

One Surgeon, From Your First Conversation To Your Follow-Up

Dr John Loy, Consultant Bariatric and Metabolic Surgeon, Head of Bariatric Surgery at Auralia

You meet Dr Loy at your assessment, he performs your surgery, and he sees you at your follow-up appointments. He has performed almost 3,000 weight loss procedures and is the first surgeon certified to perform MagDI™ in Ireland.

  • FRCS
  • Head of Education, BOMSS
  • IFSO member
  • MagDI™ certified

Care that stays in Ireland

  • Your dietitian and the Auralia weight loss app
  • Structured check-ins after surgery
  • A 24/7 surgical emergency line
  • Auralia Private Hospital, Dublin: Ireland's first internationally accredited private hospital

If something worries you at 2am, you call us.

25 years caring for patients in Ireland40,000+ patients

What Patients Say About Meeting Dr Loy

“He took the time to explain everything clearly and made sure I felt comfortable every step of the way.”

Miroslav P., Trustpilot review, November 2025

“Dr Loy was a good doctor listening to my concerns I was a bit worried before my surgery but Dr Loy was helpful in calming me down”

Salma, Trustpilot review, November 2025

“The team hand hold you throughout, follow up calls, check ins, and as Dr Loy said on the day of leaving after the Op, our care continues for months following the Op, which was comforting when you are at home afterwards.”

Niall S., Trustpilot review, September 2025
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Your Questions, Answered

Not Sure Yet? That Is Exactly What The Assessment Is For.

Free, one-to-one, with Dr John Loy. In Dublin or online.