Veganism is when a person abstains from the use of animal products
I've actually considered going vegan myself, for moral reasons.
not only follow a vegan diet but extend the philosophy into other areas of their lives, and oppose the use of animals for any purpose. Another term is "environmental veganism", which refers to the avoidance of animal products on the premise that the industrial farming of animals is environmentally damaging and unsustainable.
Well-planned vegan diets are regarded as appropriate for all stages of life, including during infancy and pregnancy, by the American Academy of Nutrition and Dietetics, Dietitians of Canada, Australian National Health and Medical Research Council
vegetarian/vegan lifestyle in the Church in the UK.
Partial fasting and temporary abstinence.
During Lent some Christian communities, such as Orthodox Christians in the Middle East, undertake partial fasting eating only one light meal per day. For strict Greek Orthodox Christians and Copts, all meals during this 40-day period are prepared without animal products and are essentially vegan. Unlike veganism, however, abstaining from animal products during Lent is intended to be only temporary and not a permanent way of life.
Eastern Orthodox laity traditionally abstains