I doubt meat will still be in your intestines after 14 years. Maybe some colon plaque but you can get rid of that by using a combination of 1 month of Humaworms Colon Cleanse
followed by 6-12 months of Barefoot's lower bowel balance. Both are formulas designed to strengthen your colon so that you expel everything yourself.
Fruitarian is a great short term diet for up to 3 months. I used it to heal my body. The barefoot orange fast is based on being fruitarian for 14 days. It's very easy to do, I recommend it. You can have as much as you want to eat, so it's good that way.
Water fasting helps the skinny gain weight and the overweight lose weight. Fasting experts like Shelton
had thousands of patients actually use fasting to gain weight, including his own sister who was malnourished, enervated, and super skinny. I know it may seem counterintuitive to some people, but it works. You can read more below by Shelton
The Humaworm will be great against parasites. That and the Barefoot dewormer are the best. I've taken other parasite
cleanses and compared to these two they did nothing at all.
After your parasite
cleanse, a Liver Flush
(do the Sutter coke flush) might also help.
Fasting is tough to handle period, but it's worth it. It's worth every single bit of time. A successful fast will make you want to do more.
Regarding meat eating. I've read quite a bit on longevity and I can tell you that no pure vegan has ever lived pasted the age of 100. The studies by Dr Bass have shown that it's critically important to include a complete protein in your diet, which means either eggs, milk, or meat. Ghandi and his followers, who tried to be pure vegan for over 20+ years, concluded that it was impossible for long term health and that anyone who supported veganism to India was "an enemy of India". Strong words from a pacfist!
Anyway, hope this helps.