Here's an article from scientific american.
Most hunger strikers (who are adequately hydrated) can last up to 70 days, but may still have health problems due to it. People who survive concentration camp and famine conditions may be able to go longer still, but they usually have some form of food coming in at irregular intervals that may sustain them -- so technically not complete starvation fasting period.
Death comes with body weight issues. If weight drops below a certain percentage (into a BMI that is half of normal), then organ failure sets in.
For starvation diets for overweight and obese people, one of the long term symptoms is heart conditions (myocardial infarctions).
Then, the article goes on about refusing food and water -- whether actively or passively refusing due to total incapacitation -- and death occurring within 10-14 days. I don't think you are at risk for this.
I think that if you want to fast, it's fine -- but I personally want to nourish as well. Consuming one meal a day, for example, can be quite a good way to get lean without the risks that starvation can have.