Since giving up meat at the age of 21, Alicia Silverstone has been amajor advocate for goingveganand shes raising her 6-year-old son, Bear Blu, to do the same.

In a video for the nonprofitFarm Sanctuarys Compassionate Meals program, the 40-year-oldCluelessstar explains why she is so passionate about this lifestyle.I just have always been really interested in the truth in all areas of life, she saysas they eat veggie burgers and kale salad. And so knowing the truth about where our food comes from is just so disturbing to me. Once you see it, theres no way to go back from that for me.

Additionally, she believes that people inthefood industryare intentionally deceiving the public into eating meat. Our food is being hijacked and theyre telling you lies about what your food is, says Silverstone. Its just constant lies so that youll make choices that go against your nature.

When Bear is asked what his favorite thing about being a vegan is, he responds: That you dont have to eat yucky meat.

FROM PEN:How Alicia Silverstone Maintains a Strict Vegan Diet For Her Son Without Judging Other Moms

Silverstone says she has no trouble feeding her child vegan foods, whipping up dishes like tacos and stir fry at a moments notice.I can make all those things based on whats in the fridge. You always have a bean, you always have a whole grain.

The amazing thing about it is that its turned me into a health nut, because youfeelso good, you feel so different, she adds. So being able to do something that is good for the Earth, good for the animals and good for you all at the same time seems like such a no-brainer. Its like the biggest Duh!'

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The actress previously made headlines in 2012 when she posted a video of herself chewing up food and feeding it directly into Bears mouth from her own.Its his favoriteand mine. He literally crawls across the room to attack my mouth if Im eating, she said at the time.

Andeven as some have criticized the idea of feeding children a vegan diet, Silverstone has staunchly defended her familyslifestyle.[Bear] lovesthe food I give him, she told PEOPLE in 2014.Hes not being deprived of anything. For him, having amazing fruit is like candy!

Despite her passion on the subject, Silverstone has beenclear that she doesnt force her eating habits upon others.I totally dont judge anything anyone else does, she recentlysaid on thePeople/Entertainment Weekly Network. Im only interested in helping provide information in case you want to know a piece of this secret Ive found If you dont, all love and peace.

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Alicia Silverstone Says Feeding Her Son a Vegan Diet Is 'Such a No-Brainer' - PEOPLE.com