The 38-year-old mum-of-two plays neuroscientist Amy Farrah Fowler in the hit US TV series. Just like her character she actually has a PHD in neuroscience after completing her doctorate when her youngest son was two.
Her parenting book Beyond the Sling will be published in the UK on October 10. It advises parents to breastfeed until the child decides to wean themselves and to practice co-sleeping, where babies share a bed with their parents.
It also takes an anti-vaccine stance and advocates veganism for young children.
Mayim, who is probably still best known for starring in 90s teen sitcom Blossom, has two children, Miles, nine, and Frederick, six, with her ex-husband Michael Stone.
Despite their divorce the couple remain close and Michael is a stay-at-home dad who home schools their sons while Mayim works.
Mayim breastfed Frederick until he was four years old - which caused a stir when she was photographed breastfeeding him on a New York subway train.
Her book, which is billed as 'a real-life guide to raising confident, loving children the attachment parenting way', received both praise and criticism when it was released in the US.
When it comes to dealing with her detractors Mayim certainly doesn't pull any punches, saying mothers who disagree with her approach are 'indignant women who want to be in offices and not parenting their children actively.'
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