Welcome to Chasing Life. What if I told you that our hair is more than what we see in the mirror?

It's something that can actually tell us a lot about our health. You see, hair loss and hair changes aren't just cosmetic.

They can reflect real shifts and hormones and stress and nutrition and even other underlying health

conditions. Here's the thing. Most people naturally shed about 50 to 100 hairs a day. But sudden

thinning, brittleness, grang, that can feel really alarming and yet sometimes it's just completely

normal. So the question then is, how do you know what

hair changes are red flags, what's part of normal life, and what really does work if you want

healthier hair, hair that is thicker and darker? What does healthy hair really mean? Today I'm

talking with Dr. Marianne McCritus Sena. She's a board-certified

dermatologist and associate professor at Harvard Medical School who specializes in hair and scalp health.

Today, we're going to talk about the different types of hair changes, share some practical tips for keeping your hair and scalp healthy and my personal favorite, we're going

to bust some pretty big hair myths that you have probably heard.

I'm Dr. Sanjay Gupta, CNN's chief medical correspondent, and this is chasing life.

When was the last time you stopped and listened to your body?

Here's a Holland and Barrett ad break to do just that.

Go on. Have a listen to your gut.

Is that a gurgle?

A rumble?

Is it straining after lunch?

Or is it saying,

You've got to show me love.

We know what your body's asking for.

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