Veganism is first of all not a diet @crypto-mammoth. However, the healthiest diet would be Whole Food Plant Based diet. Vegan meals are not necessarily healthy, but they must be cruelty free.

Veganism as defined by Donald Watson (1910-2005), the man who coined the word vegan in 1944.

The word "veganism"denotes a philosophy and way of living which seeks to exclude — as far as is possible and practical — all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose; and by extension, promotes the development and use of animal-free alternatives for the benefit of humans, animals and the environment. In dietary terms it denotes the practice of dispensing with all products derived wholly or partly from animals.