Some people have different reasons when they started to reduce their meat intake until fully eliminating meat, fish, dairy and eggs from their diet plans. For some, being vegan is part of their advocacy to help protect the environment, save the planet or save more animals, while other people prefer vegetables to improve personal health.

Whole grains, fruit, nuts, seeds and vegetables are packed with beneficial fiber, vitamins and minerals. With the health benefits of veganism, the approach has been getting more attention around the world.

Among the famous people enjoying a vegan diet are Ellen Degeneres, Natalie Portman, Samuel Jackson, Serena Williams and Mike Tyson, according to The Telegraph

But what are the exact reasons people are committing themselves to an all-vegetable, no-meat diet? Below are the science-backed reasons to go vegan. 

1. It extends life.

A number of studies showed that the plant-based diet could help reduce the risk of developing diseases and harmful conditions, including diabetes and obesity. One research showed that mass adoption of a vegan diet could cut 8.1 million deaths a year. 

2. It helps cut weight.

A 2015 study provided evidence that a vegan diet could help shed the excess weight. Compared to people following a meaty diet, the people who consumed more vegetables lost more weight. Losing the extra fat could also lead to lower risks of heart disease and certain types of cancer. 

3. It helps save the environment.

Agriculture has been significantly contributing to greenhouse gas emissions. One kilo of beef produces 27kg CO2. A 2016 study suggested that a vegan diet could help cut food-related emissions by 70pc globally. 

4. Most vegetables and fruit are just healthy.

Eating enough fruit and vegetables could give the body the essential dietary fiber, vitamins and minerals, including calcium, potassium and Vitamin C, which can promote better health. 

5. It makes you smell better.

Researchers previously found that the sweat of those who eat a meatless diet and mostly fruit and vegetables are more attractive to other people. The study showed that some people found vegans smell "floral, fruity, sweet or having medicinal qualities."

6. It is safe for every age and stage of life.

Both the British Dietetic Association and the American Academy of Nutrition and Dietetics marked veganism as suitable for every age and stage of life, according to the Vegan Society. But people should make well-planned vegan diets that follow healthy eating guidelines. It may be risky for babies to become vegan too early. 

But for adults, the health benefits of vegan diets include lowering blood pressure and cholesterol.

7. It promotes a “green” lifestyle.

Going vegan could help reduce carbon footprint by reducing the need for animal products. It has the same effects as recycling household rubbish and cycling to work.