Besides its confrontational style, the way this question was asked suggests the author hasn't really looked into this or at least isn't clear on what questions they should be asking. It is true that, in modern scientific culture, you cannot get approval to lock a bunch of college kids in a room for a week without food or water so you can check in with them years later and look for long term health effects.
But there are a LOT of indirect ways to study this, either by studying populations that have suffered starvation (through famine or war) or brought it upon themselves (anorexia). Or you can look at animal studies, which might not give precise consequences for humans, but can be far better controlled (you can lock them up for a week and keep them around for a year). And they will have strong implications for humans, even if the results are numerically different.
Back at human population studies, you also don't need full starvation studies (X days without any food) to find that there are long term consequences, simple caloric restriction (CR) is well established as having long term negative consequences. I don't think it's a big stretch to assume that full starvation would (at the least) exacerbate these effects. On the other hand, there's a lot of recent age-related research showing controlled CR can extend lifespan from yeast up through mice. Though it's also well established that it can (for instance) reduce fertility at the same levels.
I'll just give a couple links on population studies on starvation. Starvation is much easier to research because (as I recall) people can live for about a month without food or sleep, but a week without water and you're just dead. Population studies seem like the best way to get at the question you're asking (consequences of chronic starvation). But as I said, these aren't controlled studies, you have to go out and find a relevant population and get what data you can. You're not going to just run across a dozen people who all went for exactly one week without food in 1943 and then went back to their normal lives. These are single study papers, but they each cite at least a dozen related papers (including reviews) and should be more than sufficient to nucleate further literature searches.
Severe caloric restriction in young women during World War II and subsequent breast cancer risk
Comparison of metabolic profiles of acutely ill and short-term weight recovered patients with anorexia nervosa reveals alterations of 33 out of 163 metabolites
If these don't address what you're after, then please be more clear about what you actually need (and WHY this isn't it). And, you know, this is a public forum that runs simply by the good graces of interested and knowledgable scientists. So please try and be a little nicer in how you phrase your questions.