To see the benefits of a vegan lifestyle, look to Singapore-based fitness couple Luke and Emilie Tan. The switch by the couple, made nearly a decade ago, from a diet that included meat, dairy and eggs ...

Singaporean Luke Tan used to take whey protein, derived from cow’s milk, for muscle growth. As a bodybuilder, he relied on this dairy supplement to deliver quick results. Then, in 2012, he watched a ...