I'm interested to know if you tested their blood sugar after their meal out!
I think there are a number of reasons why people ignore advice:
1) They don't fully understand (I remember once almost weeping with frustration explaining about a child with a serious peanut allergy "But all children eat peanut butter"' "It's not going to kill her, is it?" etc is what the carer kept saying and I just could not make her understand)
2) They understand completely but either don't want to follow advice (they'd rather continue doing what they enjoy) or are unable to follow it (lack enough willpower)
3) They kid themselves that they are following it ("It's only an occasional treat" when it's practically daily, etc) and can't look at themselves objectively.
All you can do,is make sure they understand and leave them to make their own choices.
This is so true Azure, what a good summary!
Often people don;t fully understand, and they don't realise they don;t understand. I'll give an example.
For many years I suffered from bad nasal congestion all the time. I used decongestant nasal sprays every day, despite warnings on the bottle and given out by pharmacy staff and doctors that they should only be used for 3 days at a time to prevent rebound congestion. I literally did not understand the message.
Also, I was desperate for relief and importantly, no doctor ever suggested there might be a reason for the congestion and referred me to an ENT specialist for assessment. Until I was in my late 30s when a GP referred me. The ENT doc sent me for a CT scan which showed a structural blockage, which was then surgically corrected. When I woke up from the surgery I could breathe properly for the first time! In addition to the structural problem that I was born with, I also had very enlarged turbinates, which means the decongestant sprays had made my congestion worse. This extra tissue was removed but the ENT said if I was to go back to daily use of the sprays, they turbinates would enlarge again and need surgery. So I now follow the advice and only used them for a day here and there.
This example shows that even with being given a message dozens of times over many years, if the person does not understand, and does not realise they don't understand, then they won't change.
It also shows that if you have an ongoing symptom, you should press for specialist referral, which is why I so often say this in threads. By putting up with congestion for several decades, and using the wrong treatment, I did damage to my body. Luckily it could be surgically corrected. Severe diabetes complications can't. So people need to be helped to understand, I think.