My weight is 158 lb. Another interesting phenomena which I have experienced is, that on 3 occasions in my lifetime, whenever I had a dead or abscessed tooth causing inflammation and facial swelling, I invariably went on a water fast and within 13 to 18 days, the dead tooth fell out by itself. Naturally and painlessly. The dentists I told this to were amazed and said they never heard of this. Yet I saved these teeth as proof of Nature being able to handle all conceivable physical problems.
Vegans can be deficient in proteins and fat.
This is a major reason why supervision during your first fast is recommended. Then have a second fast of equal length or slightly longer, then a good diet again. In this way you'll avoid possible complications. Breaking the fast in a proper way is also very important. In the old days it was pretty easy and safe to go on a long water-fast.