I Don't Care for My Weight Very Well, But...

I'm not very interested in my health, and I don't care for my weight very well. Recently, my weight is 87.2kg, and calculating into BMI, is 30.2. I watched "Torisetsu Show/Introducing Manual Show" in NHK. and it said that it's unhealthy if we are too thin too. My mother is too thin, and also hardly go to ChocoZAP. I'm a bit anxious. For healthy, it's important for us to take both calcium and protein. They help our bone mass and protein increase. By the way, I've sometimes continued to cook. I like spaghetti very much despite increasing my weight.