Holding the foundations as an active older adult

The foundations are the same six

The foundations the adult guide names are the foundations the older-adult guide carries forward. Total daily dose is still the number you can quote in any clinic room. Insulin-to-carb ratio is still the lever the algorithm leans on most. Insulin sensitivity factor is still the lever that catches the high reading rather than the meal. IOB visibility is still what keeps the next correction sane. Hypo recognition is still the foundation the years quietly erode for many readers, and hypo treatment is still anchored on the adult population-average of 15 g of fast-acting carbohydrate, recheck at fifteen minutes, repeat if still low. Your team holds the personal numbers.

Naming all six in one place at the front of this part saves restating them through the sections that follow. The reader who wants the deeper read on any one of them opens the Foundations cluster on GNL.

What does change in this band, and what does not

The honest summary is that the change in this band is rarely the diabetes math; it is the body around the math. The math you have built over the decades is largely the math you keep. The conversation in clinic does not start the diabetes work over; it widens to take in the named shifts the older-adult literature surfaces (ADA 2026 §13). The three shifts that come up most reliably are the ones in the box below.

None of the three is a sign that the diabetes work is failing. Each is a named shift the literature flags as worth widening the conversation around. The settings change that follows any of them is a care-team conversation; the noticing is yours.

AID in the active older adult band

Automated insulin delivery sits comfortably in the active older-adult band; the evidence base is largely consistent with the adult band, and the manufacturer-published older-adult target floors are the safety case for using the systems with confidence in this decade and beyond. The AID Optimiser on GNL holds the educational ladder for the trade-off conversation about AIT and target that this band most often arrives at clinic wanting to rehearse.

The AID Optimiser is a Grade D educational synthesis on a Grade A and B evidence base, reviewed by manufacturer global medical leads at CamAPS, MiniMed, Tandem, and Insulet; it is never endorsed by, validated by, or co-developed with them. It is not a substitute for the conversation with your diabetes team. The vocabulary GNL uses for the trade-off is “shorter AIT” and “lower target”; the words “aggressive” and “responsive” are out of the canon.

The four UK AHCL systems each carry a manufacturer-published older-adult target floor, surfaced below as the safety case for using the system in this band. The paediatric floors on the device pages are intentionally tighter; the older-adult floors below are intentionally a little higher. Both serve the same purpose: a target the algorithm will not work below in the band the user is in.

The floor on every system is the safety case, not the headline. The team owns the actual target chosen for the reader; the floor is what the algorithm will not work below in this band, and naming it explicitly at the review is part of the conversation worth having.

Exercise in this band is a glycaemic-planning conversation, not a stop sign

The older-adult exercise literature is consistent: strength, balance, and aerobic capacity all remain on the table for the active older adult living with T1D (Stathi 2026 + ISPAD 2024 ch 19, cross-referenced for the diabetes layer). The Tuesday swim, the Thursday school run, the long allotment afternoon, the post-dinner walk after the grandchild’s birthday cake, all stay part of the work. The diabetes adds a glycaemic-planning layer the team helps shape.

What the planning layer looks like in this band is what it looks like in the adult band, with the named shifts of the older-adult band held in view. Aerobic sessions can lower insulin sensitivity needs in the twelve to forty-eight hours that follow; resistance sessions tend the other way. The team holds the conversation about how to adjust the algorithm or the pen schedule around the exercise pattern that has held for a month or more. The lever for the reader is bringing the exercise pattern to the review; the lever for the team is the settings change that follows.

Questions to bring to the older-adult-band review

The older-adult-band review is the conversation that ties the named shifts together. The questions that move the review forward most reliably are the specific ones, not the broad ones. Bring the seven-day TDD and ask whether it is moving in a direction the team has noticed. Bring the last fortnight of CGM data and ask whether the pattern is the same shape it was a year ago. Bring any new medication added by another specialty and ask whether it warrants a settings review. Bring the question about IAH if you have noticed lows you did not feel coming. Bring the question about renal function if it has been more than a year since the last check, or the question about cognition if anyone in the household has noticed a change worth naming.

None of those questions is on its own a reason to alter ICR, ISF, AIT, or target alone. Each is a reason to ask the team to read the last fortnight of data with the named shift in view, and to widen the conversation about which of the foundations might need a touch.