Diabetes and Intellectual Disability: Consent and Education

Diabetes and intellectual disability: consent, four finger pricks a day, and who comes to the appointment

Diabetes is the most self-management-dependent chronic condition in common medical practice. Testing, dosing, carbohydrate awareness, foot inspection, recognising a low, adjusting for illness and exercise — the entire model assumes a person who can learn a complex set of rules and apply them several times a day, every day, indefinitely.

Then it is handed to a population that was never considered in its design.

People with intellectual disability have 2.46 times the odds of having diabetes, on a 2022 meta-analysis pooling 33 studies and 55,548 people. And once they have it, almost every assumption built into diabetes care fails — not because the person cannot manage anything, but because nobody adapted the model, nobody asked what they could do with support, and nobody checked whether they understood what was being done to them.

This guide is about the three things that go wrong most: the diagnosis arriving late, the consent nobody obtains, and the education nobody adapts.

We support NDIS participants with intellectual disability across New South Wales, including people with diabetes. We are not a diabetes service and nothing here is medical advice. The National Diabetes Services Scheme Helpline is free on 1800 637 700 and is a better source on diabetes itself than we are.

Why the diagnosis arrives late

Type 2 diabetes develops over years, and its early signs are all things somebody has to notice and interpret.

Here is how each one gets absorbed into the disability instead:

Every one of those is a reasonable interpretation in isolation. Together they are diabetes, and nobody assembled them, because progress notes are written shift by shift and nobody reads them longitudinally.

This is diagnostic overshadowing, named explicitly in the National Centre of Excellence in Intellectual Disability Health’s State of Play report of March 2025 alongside unconscious bias, miscommunication, the absence of the person’s usual support people from consultations, and poor supported decision-making. The same report found a median age at death of 54 among people with intellectual disability in Australia — around 27 years earlier than the general population — with 38 per cent of deaths potentially avoidable.

What catches it is not better observation. It is a blood test. Which is why the annual health assessment matters more here than any amount of vigilance: it is the one appointment where glucose gets checked whether or not anybody has noticed anything.

MBS item 707 funds a prolonged annual health assessment of more than 60 minutes for people with intellectual disability, booked directly with a GP, with no referral needed, using the free CHAP tool whose first part is completed before the appointment. A second item, MBS 699, covers an annual Heart Health Assessment for that group. There is a fuller account of this in the diabetes and disability overview on this site.

If the person you support has an intellectual disability and has not had an annual health assessment this year, that is the call to make.

The consent question nobody asks properly

Now the part that we think is genuinely under-examined.

Blood glucose monitoring means piercing somebody’s finger with a lancet. Insulin means injecting them. For a person on a four-times-daily testing regimen with three injections, that is seven invasive procedures a day — more than 2,500 a year.

Consent to that is not a form signed once at diagnosis. It is an ongoing matter, and it deserves to be treated as one.

Start from the presumption of capacity. Every adult is presumed able to make their own decisions. Capacity is decision-specific — somebody who needs a financial manager may be entirely able to decide about their own diabetes care — and it is support-dependent. Needing information in an accessible format, more time, and a trusted person present is not the same as lacking capacity.

Supported decision-making is the starting point. Which in practice means:

• Easy Read information about what diabetes is, what the test is for, what insulin does and why it matters, provided well before a decision and gone through more than once
• Time, and more than one conversation
• A trusted person present, chosen by the person
• Checking understanding by asking the person to explain it back, not by asking whether they understand
• A genuine opportunity to ask questions, to object, and to change their mind
• Explaining each procedure each time it happens, not only when the regimen started

Where capacity is genuinely absent even with support, substitute decision-making applies. In New South Wales, medical treatment consent for adults who cannot consent is governed by the Guardianship Act 1987, with a “person responsible” hierarchy — broadly a guardian with a health function, then a spouse or de facto partner, then the person who cares for them on an unpaid basis, then a close relative or friend with a continuing relationship.

Somebody paid to provide support does not qualify as the person responsible. Workers, house managers and providers have no authority to consent to medical treatment. We put it bluntly because providers do get asked, and the answer is always no.

When somebody resists the finger prick

This is where the consent question becomes immediate and where providers get into real difficulty.

A person pulls their hand away. Turns their head. Says no. Becomes distressed when the kit comes out. Hits out when the worker approaches with a lancet.

What happens next determines whether this is care or something else.

First, work out what the resistance actually is. The possibilities are genuinely different and they look identical:

• It hurts. Lancet depth settings exist, alternative sites exist, and finger pricks done badly hurt considerably more than finger pricks done well. This is the most common and most fixable cause and it is frequently not investigated at all.
• Nobody explained it. The procedure is being done to them with no understanding of why.
• It is unpredictable. Being approached without warning, at varying times, by different people.
• Past experience. A painful or frightening episode, or being held.
• Genuine, informed refusal by somebody who understands and does not want it.

Second, exhaust the fixable causes before anything else. Change the lancet depth. Use the sides of the fingers rather than the pads. Try alternative sites if the meter permits. Warm the hands. Use the same person, at the same time, with the same words, every time. Let the person hold the device, press the button, choose the finger. Build it into a routine with a predictable sequence. Easy Read material and a social story. Rehearsal without the lancet.

For many people this converts a daily fight into a non-event, and it costs nothing but attention.

Third, consider whether the regimen itself can change. This is the most important and most neglected option. If testing four times a day is causing daily distress, the question for the diabetes team is whether four times a day is necessary for this person — or whether continuous glucose monitoring would replace most or all of the finger pricks with a sensor changed every week or two.

For somebody with intellectual disability who finds finger pricks distressing, CGM is not a convenience. It is the difference between 1,460 invasive procedures a year and around 26 sensor changes. That case deserves to be put to the diabetes team explicitly, and it has its own guide here.

Fourth — and this is the part providers must not get wrong. If a person is physically held, or their hand is restrained, so that an injection or a finger prick can be performed, that is physical restraint.

Physical restraint is one of the five regulated restrictive practices under the NDIS Quality and Safeguards Commission’s framework. Its use requires authorisation under the relevant state or territory process, a behaviour support plan prepared by an NDIS behaviour support practitioner, and reporting to the Commission — an interim plan within one month and a comprehensive plan within six, with monthly reporting of use.

This happens in houses, routinely, without authorisation, framed as necessary medical care. We understand why: the alternative looks like letting somebody become seriously unwell. But the framework exists precisely for situations where a restriction may be necessary — the requirement is authorisation and oversight, not abstinence.

The right path when it reaches this point:

1. Stop and get the diabetes team and the behaviour support practitioner in the same conversation, which almost never happens by itself.
2. Exhaust every adaptation above, documented.
3. Ask whether the regimen can be simplified or technology substituted.
4. If a restrictive practice is genuinely needed, get it properly authorised, planned and reported — with a reduction strategy.
5. If the person has capacity and is refusing with understanding, that refusal has to be respected, and the clinical conversation becomes about what the least-bad alternative regimen is.

What must not happen is a daily physical restraint continuing for years because it was never named as one.

Education that is actually usable

Diabetes education in Australia is good and it is not designed for this population. Credentialled diabetes educators report limited confidence working with people with intellectual disability, appointments are short, and the standard materials assume reading ability and abstract reasoning.

What adapted education looks like:

Easy Read materials, with one idea per page, pictures, and concrete language. These exist and are rarely offered. Ask for them specifically.

Concrete rather than abstract framing. “Your blood has too much sugar in it and that hurts your body slowly” works. “Impaired glucose metabolism” does not. “This food makes your sugar go up fast” works better than carbohydrate counting for many people.

Teach-back. Ask the person to explain it back in their own words. This is the single most useful technique available and it catches the large number of cases where somebody has nodded without understanding.

Repetition over time, not a single session. Learning something this complex takes many short exposures, and a one-hour appointment at diagnosis achieves very little.

Training the support team, not just the person. This is the piece most often missed. In supported accommodation, the people doing the daily management are workers, and they turn over. A diabetes educator who trains the house team — on this person’s regimen, this person’s hypo presentation, this person’s devices — does more good than any amount of education delivered to the person alone. Many educators will do this if asked, and almost nobody asks.

Involving the person in what they can do, even where full self-management is not realistic. Choosing the finger. Pressing the button. Reading the number. Recognising their own symptoms and telling somebody. Putting the sticker on the chart. Each of those is a genuine increase in autonomy and each is a legitimate NDIS capacity-building goal.

Asking for longer appointments. Level C consultations (item 36, 20 to 40 minutes) and Level D (item 44, over 40 minutes) exist, and practices that know this will book accordingly.

Bringing the right person to the appointment. Among the problems the NCEIDH report identifies is that the people who usually support somebody are missing from their consultations. Three years of knowing a person makes a worker a useful informant; meeting them on Tuesday to cover a shift does not. And the person themselves should be spoken to, not spoken over — clinicians commonly address the support worker instead of the patient.

The HbA1c target conversation

A point worth knowing because it is rarely offered.

Diabetes care generally aims at a target HbA1c, a measure of average glucose over about three months. Tighter control reduces long-term complication risk. It also increases the risk of hypoglycaemia.

For somebody who cannot recognise or report a low, that trade-off looks different. Severe unrecognised hypoglycaemia is an immediate, acute danger. Retinopathy in fifteen years is a serious but distant one.

Diabetes teams do individualise targets for exactly this reason, and a slightly higher target in exchange for substantially fewer hypos is a legitimate and sometimes correct clinical choice.

Families and support teams should know this conversation exists. If somebody with intellectual disability on insulin is having frequent lows, “can we discuss whether the target is right for this person, given the hypoglycaemia risk?” is a reasonable question for the diabetes team — not an argument for poor control, but a request to weigh the specific risks of this specific person.

The surveillance that needs somebody to book it

Diabetes complications are found in people without symptoms, by examinations somebody has to arrange. For a person with intellectual disability, that somebody is a named individual or it does not happen.

• HbA1c, at the interval the diabetes team specifies
• Retinal examination, which detects retinopathy before vision changes. Australian National Eye Health Survey data indicated a retinal screening rate around 78 per cent among non-Indigenous adults aged 50 and over with diabetes; rates in people with intellectual disability are not well measured
• Foot examination — covered in its own guide here, and the stakes are high given Australia’s amputation rate
• Kidney function and urine albumin
• Blood pressure and lipids
• Weight and waist circumference
• Dental review. Periodontal disease and diabetes worsen each other, and dental care for people with intellectual disability in Australia is poor. Infected gums raise blood glucose; raised blood glucose worsens gums
• Medication review. A Home Medicines Review is funded under Medicare and is worth requesting where there are multiple medications
• Immunisation, including influenza and pneumococcal as recommended

Transition from paediatric to adult services

For a young person with intellectual disability and type 1 diabetes, the transition out of paediatric care is a known risk point — a well-documented period of disengagement and deteriorating control.

It is worse where there is intellectual disability, because adult services assume more self-management than paediatric services did, and the family who held the whole system together is given less standing.

What helps: starting the transition conversation years early rather than at 18, a named transition coordinator where one exists, a written handover that includes the support arrangements and not just the clinical history, and the receiving service being told explicitly what the person can and cannot do independently.

What good care looks like

• Annual health assessment every year, using the CHAP
• Glucose checked annually at minimum, and more often with antipsychotic use
• A diabetes management plan from the treating team, current, with a complete hypoglycaemia protocol and a sick day plan
• The diabetes plan and any behaviour support plan referencing each other
• Easy Read education, repeated, with teach-back
• The support team trained by a diabetes educator on this specific person
• Resistance to procedures investigated as pain or incomprehension before anything else
• Any physical restraint for a procedure properly named, authorised and reduced
• CGM considered explicitly where finger pricks are distressing or hypo awareness is absent
• HbA1c target individualised with hypoglycaemia risk weighed
• Complication surveillance booked by a named person
• Longer appointments requested, with a worker who knows the person
• The person spoken to directly