My brother is eating himself to death and enabling his children to do the same. Should I say something?

My brother has always struggled with his weight. We grew up in a house with a mom who binged, crash dieted, gained it all back, crash dieted again, and was always horrendously hung up about food and weight. She would often fat shame us and even put me on (now illegal) ephedra diet pills when I was a pre-teen going through a chubby phase. My brother did not escape unscathed either, she often called him “fat and useless” well into his adulthood and made us both feel so ashamed of our bodies.

I’m not blaming my mother for my brother’s obesity. She’s dead now, and he’s free to make his own dietary choices. But considering our upbringing, I’m not surprised to see how he struggles with food.

I visited him in his state this weekend after not seeing him in a year, and was shocked by how much he had ballooned. He’s only 38 but is already prediabetic and his blood pressure is so high, it’s sent him to the ER at least once in the past six months. He’s on medication for both conditions but hasn’t changed his lifestyle. When he walks, his legs look like this )( as if they could collapse any moment under his weight.

Moreover, two of his three stepchildren (who he raises) are morbidly obese and use food for comfort. The boy, 14, is struggling so much with his own girth that he can hardly breathe and the younger girl isn’t doing much better. They both struggle with mobility and you can tell that even walking is laborous for them because they are not used to it. They are very much loved, but they are withdrawn, painfully shy, and it’s obvious they don’t feel great.

He lets the kids eat whatever they want: fries, pancakes, burgers, pizza, ice cream, etc. because he eats whatever he wants and fattening foods are a “family activity”.

It pains me to see my brother putting himself at risk this way and frustrates me to see him modeling this behavior for his kids. I live far away, but we speak on the phone almost daily and I keep up with the kids through text and social media as well. Is there anything I can do to help them? I know that saying something would not be appropriate but it saddens me to think about my family destroying their health that way.