HELP! I need advice from you for my sister

[Dogmum1982]

Hello,
Firstly I want to start by saying that I am not a mother (yet) so I am reaching out for some advice.
My sister has two children 5 & 9 and I believe she feeds them way too much sugar and processed foods. As I am not a mother I don't believe I can say anything to her however it breaks my heart to see how addicted they are to it.
When they get home from school they eat sugar non-stop until they go to bed- be it sweets, biscuits, pastries etc. My sister cooks 85% processed food. She actively encourages them to eat sweets, even when they don't ask for them.
I don't believe there is anything wrong with sweets and processed foods in moderation but to make it the entirely of their diet feels wrong, especially as they can afford to eat well.
I find it so hard to watch when I am there and I feel angry at my sister for allowing this to happen AND I have no idea what it is like to be a Mum.
Both of the children are neurodiverse which I know is exacerbated by sugar and processed foods.
On the one hand, feel like I am enabling her by not saying anything and therefore i'm as bad as her. On the other hadn't I feel I have no right to say anything because I am not a parent.
Should I keep quiet or do I have a duty of care to my niece and nephew?
Any advice would be much appreciated.
F

ND children can be extremely fussy about the foods they eat. It might be that beige food is better than no food. Personally I would keep out of it. Not your circus, not your monkeys.

OP, you will likely be told by most people who'll reply that you should mind your own business. But I think that you do, as you've questioned, have a duty of care. The only issue is how to make a positive change for the children.

Do you spend much time with them? Ever take them out for food? That would be a good opportunity to introduce them to different foods.

I don't know that one came before the other, I know a number of people with nd children and it's literally just that they are extremely fussy eaters but add to that would absolutely eat nothing if left to it.

I'd also like to add that up until the age of 4 my children each had the cleanest, healthiest diets ever, then

one suddenly refused every dinner bar sausages, fish fingers and waffles.

When my youngest turned 8 we had to start sitting with him to make him eat breakfast

when my next turned 6 he stopped eating fruit and now he has an agreement that every day he gets some grapes or a mandarin, an apple and some fruit juice (and even though he's 11 now he still tries to get out of it!).

I also have one that won't eat rolls, wraps or any form of bread for their school lunch (most fun, how do you keep your child full up for the day when they only want popcorn, a cereal bar, fruit and a yoghurt and they're in until 6? And they tell you they won't bring in pasta, that they'll eat at home?).

You assume your sister doesn't know but she knows and I'd be pretty sure she's tried to tackle it. (I could be wrong and she might think that food is all ok)