In the past, I've written about my family's health history and how my involvement in multi-sport is my way of fighting against my genetics. How I work to not only make consistent healthy choices in staying active, versus a sedentary life-style but also being overly aware of what I put into my mouth on a consistent basis.
I do have cheat days, my favorite being to buy two Totino's party pizzas and a 1/2 gallon of Blue Bell vanilla ice cream and eat to my heart's (or gorged stomach's) content. But that epic event happens maybe once a month or once every couple of months. In the normal day-to-day, 95% of the time, I eat clean.
Now, when I travel, it's not difficult to eat clean (if I want to spend a small fortune and sometimes I do choose to spend that small fortune because I'm too lazy to pack food for the trip. However, when I go home to visit my parents, I have to pack my own food. My folks are from the old school. No fresh foods in the house the majority of their food is highly-processed with no health value, just something to fill up the stomach. I don't fault them for not putting in the work I have to find better choices, we've chosen different paths. We have doctors who heal from vastly different viewpoints. I've long since given up the fight to pull them into a place of healthier food choices. But that means going home to visit them I must carry ALL my food with me.
At first, my mom would ask what I wanted to eat and she would buy it for me, but over the years, it's just gotten easier to arrive at their home with my own food already prepared. There was some guilt I had to overcome, but it got easier. Especially when I stopped feeling sluggish and gross/sick after having eaten what they ate.
I know it can be awkward, especially in certain cultures. But I encourage you to test the waters. I've tried cooking all meals for my folks when I was at home, but my 'clean' way of eating was not in tune with their vastly different tastes. Have the conversation, it's a good way to open the door of talking healthy choices as it deals with longevity, you love them and want them to be around longer. If that fails, you have to make the choice that's right for you and your relationship with your family.