Bialik has more in common with her character than you might expect. She has a PhD in neuroscience and was known to tweak the show’s often technical script if writers didn't nail the science. The long-time vegan also became the co-owner of the plant-based restaurant Bodhi Bowl in Los Angeles when it opened in 2017, and has penned a vegan recipe book in collaboration with the restaurant’s chef, Ali Cruddas.

In addition to her cookbook, Bialik has written a parenting guide, two children’s books, and a collection of facts about superhero The Flash, who's adored by her on-screen partner, Sheldon. The brainy star has also hosted the long-running quiz show Jeopardy!

Most recently, she appeared in the 2025 thriller movie Like Father, Like Son. Her diverse career has banked her an estimated $20 million net worth.

Where are the stars of Big Bang Theory now, who's richest?