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Marcella Israel, MD, OB/GYN

A photo of Marcella Israel, MD, OB/GYN
Science writer

Marcella is a Brazilian OB/GYN, humanitarian and mom.

Menstrual Cycle

Work and the menstrual cycle

“Productivity” is pretty ambiguous and hard to study. Despite this, many researchers are trying to find out how the menstrual...

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Sex

Can you have sex on your period? A guide to the benefits, risks, and tips

There is nothing “dirty” or dangerous about menstrual blood. 

Puberty

Signs your period is coming for the first time and how to prepare

Your body may give you a few clues as to when your period is going to start.

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PCOS

Everything you need to know about depression, anxiety, and PCOS

People with PCOS are about 3 times more likely to experience depression and anxiety

Menstrual Cycle

The brain, emotion, and the menstrual cycle: What science tells us

We spoke to Anne Marieke Doornweerd, a PhD candidate at Utrecht University, to learn more about emotions and the brain.

Bleeding

Uterine fibroids: Symptoms, causes and treatment

Fibroids are abnormal growths of muscle tissue that form in or on the walls of the uterus.

PMS & PMDD

How to relieve PMS symptoms

The best way to work around PMS is to figure out your unique patterns.

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Trying to Conceive

How old is too old to have a baby?

If you are 35 or older, it’s likely that what you’ve read on the internet or heard from friends might...

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Diet & Exercise

Unpacking the role of your menstrual cycle in fitness and strength training

Serena Williams has openly shared her struggles with debilitating menstrual migraines. Similarly, runner Dina Asher-Smith could not complete a race...

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Your Vagina

Vaginal dryness: Why it happens and what you can do about it

Vaginal dryness is common but treatable, and can happen at any age.

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Diet & Exercise

Can you swim on your period? Swimmers weigh in

It’s common to worry about whether you can swim on your period, Clue has all your questions answered.

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Bleeding

How much period blood is normal?

You can expect around five tablespoons of blood during menstruation, but every person differs. What is normal for you may...

PMS & PMDD

Period bloating 101

Period bloating is a common symptom of PMS

Endometriosis

Everything you’ve ever wanted to know about endometriosis

A guide to endometriosis, its symptoms, and treatments

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Birth Control

Which birth control is right for me?

Choosing the type of birth control that’s right for you can be overwhelming. Don’t worry—we’re here to help.

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Pregnancy, Birth & Postpartum

Sex, fertility, and contraception after birth

If you’re not sure how long to wait to have sex after birth, when to start birth control, or what...

Skin & Hair

Hair and skin changes: your 20s and 30s

Understanding what is normal and what might indicate a hormonal disorder may also put you at ease no matter what...