Trends might come and go in Hollywood, but "The Big Bang Theory" star Mayim Bialik knows there is one thing that will never be considered trendy - being religious.

"I think in general it's never going to be trendy to be observant or religious in Hollywood circles," the actress told Fox News.

But Bialik, who plays Sheldon Cooper's (ex) girlfriend Amy Farrah Fowler in "The Big Bang Theory" is not one to adhere to what's trendy or not in Hollywood. "There are people I know of faith and we tend to congregate together. I study Jewish texts weekly. That's something really positive to me when you're a person of faith, it stays with you all the time," she said.

When she visited a friend in the Israel Defense Forces recently and she shared parts of her trip on social media, Bialik found herself bombarded with negativity and criticism.

"I've gotten a lot of negative attention for visiting Israel," the Jewish mother of two revealed. "That's what's amazing... simply by going to Israel this summer and saying nothing more than, 'I've gone to Israel,' I got the same amount of hatred and threats and anti-Semitism for actually making a statement trying to support people whether I like it or not are serving in an army."

The fact that she is Jewish really got her fans upset, she observed. "It really doesn't matter what I support or believe, the fact that I'm Jewish and go there is enough - that should be alarming to most people," she said.

Bialik is actually the only real scientist cast in "The Big Bang Theory," and while that should be considered an advantage, the actress said that sometimes it isn't given how some people triumph over small mistakes and gloat over the simplest of things.

"Being a scientist and a person of faith, people want to know how that is. It leads to a lot of interesting conversations that I welcome but a lot of people want to open up a conversation just to tell you, you're wrong," she lamented.

But even though people react that way, Bialik is extremely proud of her background and her faith, and nothing others can say will change how she feels about herself. "I am who I am and it just kind of happened the fact that I'm a public person but there are a lot of other parts to me," she said.