A few months ago, my elder dad took me aside and regaled me with his latest medical issues. Many of them were self-inflicted. When he finished, he put down his drink and looked at me and said, "If I had known how I'd feel right now, I'd have done a lot more to keep myself healthy 20 years ago."
I don't blame him, really. 20 years ago they were members of a gym and worked out when they could, but paid no attention to diet. Even though I've educated them in the past they still don't... and instead quoted me the privilege of being happy. He's finally beginning to understand and it's too late.
We don't have the shortcomings of ignorance. This was your warning sign. I had a similar one 10 years ago. Get started now.