Hey there. Welcome to paging Dr. Gupta. This is the place where you get to ask your health questions, share your concerns, and hopefully get some real answers, some real news you can use.

Our producer Jesse is with us today with some brand new questions from the inbox. Jesse, who's up first?

Hey, Sanjay.

We got a couple of questions we thought might be fun with Halloween being this week.

The first is from Heidi in California.

Check it out.

I've always wondered this.

What happens in the brain to make some people fear blood and others don't?

For example, I can't really get my blood drawn or if I cut myself, I get queasy, sometimes

I pass out, sometimes I curl up.

But then I have a friend or a family member who can look at themselves what they get their blood drawn,

and they don't fear blood at all.

So what happens in the brain that make some fear it and some don't?

All right. Thank you so much, Jesse. And thank you, Heidi. Perfect timing with this question

with Halloween coming up, my favorite holiday. Yes, blood is everywhere this week, but some of us

react way more strongly than others.

And I love this question because what it fundamentally does is get to the heart of how our brains and bodies process certain fears and anxieties.

So we're going to have some fun, and I'm going to break down the neurobiology for you right after the break.

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