Adams took to the social media platform to answer one of the questions many vegans get asked (and he is no exception) - 'where do you get your protein?'.
"Well, don't believe the meat industry propaganda that if you are eating animals and fish, you're eating protein, because all foods need to be turned into amino acids in your stomach before your body turns them into proteins," he wrote.
"So the answer is if you're eating fresh vegetables including salads and fruit, your body naturally finds what it needs and expels the rest.
"Here is today's lunch: pesto pasta (gluten-free from @pasta_rummo ) with fresh basil, garlic, olive oil and pine nuts (no cheese), steamed broccoli with fresh lemon (the secret ingredient to being vegan is lemon), and fresh salad with tomatoes, again with a dressing of lemon and olive oil."
Adams regularly speaks out about the benefits of veganism - for the animals, environment, and human health. At the beginning of 2018, he posted a message on Instagram telling his followers to ditch animal products, writing: "Happy New Year 2018. Go vegan."
At the beginning of December 2017, he touted the health benefits of a plant-based diet, writing: "I stopped eating animals including fish when I was 28 and I've never looked back. You can get all the protein you need from plants.
"It's great to see the change that is happening as people embrace a more plant-based diet, but we still have a long way to go. If you want to see your health improve and you care about the planet, go vegan."