The fear of going low: hypo anxiety, running high on purpose, and how people get their range back
I’m scared of going low so I run high on purpose: how do people break the fear-of-hypos cycle?
Being frightened of going low is one of the most common and least talked about parts of Type 1, and running your glucose high on purpose to feel safe is an understandable response to a scare, not a weakness. A bad hypo can be genuinely terrifying, and the body remembers it, so the fear makes complete sense. The way back is usually gradual and done with support: lowering your targets slowly with your team rather than all at once, using CGM alarms as a safety net you can learn to trust, and getting help for the anxiety itself. If you are doing this, you are in very common company.
- Fear of hypos (a real, recognised anxiety about going low) is widespread, and after a frightening low the brain learns to avoid it, so running high can feel like the only safe option.
- Sitting high does ease the fear in the moment, but it tends to grow over time and leaves you feeling rough, so it is worth gently working on rather than white-knuckling.
- People find their way back gradually: nudging targets down a little at a time with the diabetes team, never in one big leap.
- CGM alarms (the alerts on a glucose sensor) can become a safety net you trust, so your brain does not have to stay on guard alone.
- The anxiety itself can be treated: talking therapies and diabetes psychology help, and asking for that is a sensible step, not an overreaction.
Why one bad low rewires you
A severe low, or one that happened in public, at the wheel, or in your sleep, can feel genuinely life-threatening while it is happening, and the body does not forget that. Adrenaline floods you, the memory gets stamped in, and afterwards your brain does the sensible thing it does with any danger: it tries hard to stop it happening again. Running high is that instinct in action. It is not being dramatic, and it is not a lack of willpower, it is a learned response to something that frightened you, and clinicians have a name for it precisely because it is so common. Naming it as fear of hypoglycaemia, rather than a personal failing, is often the first thing that takes some of the pressure off.
What running high costs, and why it is hard to stop
Sitting high genuinely does quiet the fear, and that relief is real, which is exactly why it is such a hard habit to break. The trouble is what it costs. Day to day, higher glucose can leave you tired, thirsty, foggy and short-tempered, and over the longer term it carries its own risks. The fear also tends to grow rather than shrink when it is fed, so the safe zone creeps higher and life narrows around it. None of this is a telling-off. You found a way to cope with something scary, and it worked in the sense that it stopped the lows. The point is only that there is a way to feel safe without living high, and it is one you are allowed to want.
How people rebuild trust in their range
The thing that makes lowering your targets bearable is doing it slowly and with support, so it never feels like stepping off a cliff. That means agreeing small, gradual steps with your diabetes team rather than dropping everything at once, and it is a dose conversation that belongs with them, not a number off a page. Alongside that, CGM alarms set to warn you early become a safety net your brain can learn to lean on, so you are not the only line of defence. Many people also find it helps to have one clear, rehearsed plan for treating a low, a set way to use fast sugar and recheck, so a hypo feels controlled rather than like a free fall. Each low you treat calmly is quiet evidence you can handle it, and that is how the fear loosens its grip.
Where the support actually is
You do not have to work this out alone, and telling your diabetes team is the right place to start, because they see fear of hypos all the time and will not judge you for it. Ask what psychological support they can offer: many UK diabetes services have a psychologist or can refer you, and you can also self-refer to NHS Talking Therapies for the anxiety side without going through anyone else. If you have lost your ability to feel lows coming, there are structured hypo awareness courses that can help bring the warning signs back, and your team can point you to them. Peer support, from people who understand the exact fear, helps too. Reaching for any of this is a sensible, ordinary step, and the support is genuinely there for it.
What shapes the fear of hypos
Fear of going low looks different from person to person. A single severe hypo can set it off, and so can lows that keep happening at night or in front of other people. Losing your warning signs makes it worse, because the ground feels less solid, and living alone can raise both the stakes and the worry. Existing anxiety can amplify the whole thing. None of these make the fear irrational, they make it understandable, and each one points to something concrete, better alarms, more support, a plan, that can help, rather than just being told not to worry.
How the fear shows up
Examples, not instructions or doses.
You deliberately let yourself sit at 12 or 13 mmol/L before a meeting, a drive or bedtime, because a low right then feels unthinkable. It works in the moment, and it quietly becomes the everyday setting.
A low reads 3.8 mmol/L and the fear takes over, so you eat everything in the cupboard and spike high afterwards. The rebound is the fear driving the treatment, not the low needing that much.
Setting a CGM low alarm means you do not have to lie awake checking. Learning to trust it to wake you is part of how people stop policing their glucose every hour of the night.
Worth paying attention to
Questions that make an appointment useful
When it's urgent
If the fear or distress ever gets too heavy to carry, support is there any time, day or night. You can call the Samaritans on 116 123, free, at any hour. You can text SHOUT to 85258 for support by message. And if you or someone else is in immediate danger, call 999. Reaching out is not an overreaction, it is what these services are for, and you are allowed to use them for how diabetes is making you feel, not only for a crisis with your glucose.