Not eating for a week can and does kill people.
Especially people who have a history of starvation, voluntary or involuntary, due to weakened cardiac muscle (& already damaged other organs, but it's usually a heart attack that kills them). If you'd also not been drinking? You'd be a walking dead person, right now. (Once kidneys shut down? Which happens after only a few days... There's no way to bring them back. The only option available is dialysis for the remainder of your life, & transplant of they can find a match & you're not too weak for the surgery / a good candidate. If that's not available? Or you get turned down from the transplant list? You'll still live a few weeks after they've shut down, which gives you time to say goodbye to people, but it's not a good death. It's long, painful, and you go mad towards the end). Hopefully you've been getting sugar from some source, or a week of ketosis means you could stroke out (violent seizures, brain aneurysms, & death) at any moment. Our brains run on glucose & glucose alone. Without a sugar source, our bodies can cobble ketones together to keep us going a few more days, but our brain can only deal with ketones for a very short period of time before it starts to seize & die.
Have I gone longer than a week? Yeah. Both voluntary & involuntary. That I'm still alive has absolutely zero to do with skill, and 100% to do with luck.
What you get from being honest? People trying to save your life. A chance to live.