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#Askevvy Contributor

Dr. Krystal Thomas-White, PhD

Dr. Krystal Thomas-White, Ph.D is the Senior Scientist at Evvy.

Dr Thomas-White is a microbiologist specializing in the female urogenital microbiome and how it relates to health and disease. In under 10 years she has over 20 peer-reviewed articles that have been cited over 1000 times. Her research explores how alterations in both the bladder and vaginal microbiomes are associated with common disorders (like UTIs, bacterial vaginosis, and incontinence) and how the microbiome changes in response to hormones throughout life, particularly during prengnacy, and menopause.  As senior scientist at Evvy she is excited to help bridge the gender health gap, and provide women with insight into a part of their bodies that has been too often overlooked.  

#AskEvvy Articles by Dr. Krystal Thomas-White, PhD

A woman looking thinking about 10 ways to look after vaginal health while taking a bath
Vaginal & Hormonal Health

10 Ways to Look After Your Vaginal Health

Looking after your vaginal health is essential for your overall well-being, but it’s not always a topic we discuss openly. Here are out top 10 tips.

10 Ways to Look After Your Vaginal Health
A woman wearing black underwear wondering why she is feeling uncomfortable down there
Vaginal & Hormonal Health

Why Do I Feel Uncomfortable Down There?

Learn about the most common reasons why you might feel uncomfortable down there, symptoms to look out for, and when to see your healthcare provider.

Why Do I Feel Uncomfortable Down There?
A zoomed-in shot of pink and red antibiotics for UTIs
Vaginal & Hormonal Health

Can You Get Rid of a UTI Without Antibiotics?

Learn whether your body can fight off a UTI without antibiotics, how long it might take, and when it's important to seek medical treatment for a UTI.

Can You Get Rid of a UTI Without Antibiotics?
black period blood colors (blackish and kind've reddish)
Vaginal & Hormonal Health

Black Period Blood? What the Color of Your Period Means

Wondering about black period blood? Discover what different period colors mean, from black to bright red, and when to see a healthcare provider.

Black Period Blood? What the Color of Your Period Means
a macro shot of greenish discharge
Vaginal & Hormonal Health

Why Is My Discharge Greenish?

Discover the causes of green vaginal discharge, including infections like trichomoniasis and BV, and learn when to see a doctor for proper treatment.

Why Is My Discharge Greenish?
A women swimming wondering if she can swim with a yeast infection
Vaginal & Hormonal Health

Fact Check: Can You Swim With a Yeast Infection?

Find out if it's safe to swim with a yeast infection, how to minimize discomfort, and tips for swimming while managing symptoms.

Fact Check: Can You Swim With a Yeast Infection?
a macro shot of a woman holding a vaginal swab
Vaginal & Hormonal Health

What Does a Vaginal Swab Test For?

A vaginal swab can provide essential information about your vaginal health. But what exactly does a vaginal swab test for? Find out more.

What Does a Vaginal Swab Test For?
a macro image of white candida fungi species
Vaginal & Hormonal Health

Is Candida a Sexually Transmitted Disease?

Let's dive into what Candida is, what STDs are, how to tell them apart, and how to test for and treat both.

Is Candida a Sexually Transmitted Disease?
Colorful blue and red pills to showcase BV treatment
Vaginal & Hormonal Health

How Long Does It Take for BV to Go Away Without Treatment?

Many women hope BV might resolve on its own, but it’s important to understand what BV is, why it happens, and the risks of leaving it untreated.

How Long Does It Take for BV to Go Away Without Treatment?
a blue water gradient to show if water can flush out a yeast infection
Vaginal & Hormonal Health

Fact Check: Does Drinking Water Flush Out a Yeast Infection?

Find out if drinking water can flush out a yeast infection — and the possible role of hydration in recovery.

Fact Check: Does Drinking Water Flush Out a Yeast Infection?
A blue fungi that looks like chlamydia representing if chlamydia can be dormant
Vaginal Microbiome 101

Can Chlamydia Be Dormant?

While it’s not typical, yeast infections can sometimes cause bleeding on top of usual symptoms like itching and unusual discharge. Learn more.

Can Chlamydia Be Dormant?
A red yeast representing a yeast infection causing bleeding.
Vaginal & Hormonal Health

Can a Yeast Infection Cause Bleeding?

While it’s not typical, yeast infections can sometimes cause bleeding on top of usual symptoms like itching and unusual discharge. Learn more.

Can a Yeast Infection Cause Bleeding?
A zoomed in photo of a green colored fungi that is showing yeast infection vs. trichomoniasis
Vaginal & Hormonal Health

Trichomoniasis vs Yeast Infection: What’s the Difference?

While they might have similar symptoms, trichomoniasis and yeast infections are distinct issues that require different treatments. Learn more.

Trichomoniasis vs Yeast Infection: What’s the Difference?
Comparison of Evvy’s detailed vaginal microbiome test vs. Juno’s
Vaginal & Hormonal Health

Evvy vs Juno

Learn more about the difference between Juno Bio and Evvy’s vaginal microbiome tests.

Evvy vs Juno
An opened bottle of Metronidazole to treat a UTI
Vaginal & Hormonal Health

Does Metronidazole Treat UTIs?

Metronidazole is a commonly prescribed antibiotic, but is it effective against urinary tract infections, too? Learn more about metronidazole and treating UTIs.

Does Metronidazole Treat UTIs?
A women wearing black underwear contemplating whether she can have sex with a UTI
Sex & Relationships

Can You Have Sex With a UTI?

Here’s what you should know about sexual activity when dealing with a urinary tract infection, including how long to wait before having sex with a UTI.

Can You Have Sex With a UTI?
Watery blue-ish luteal phase discharge
Vaginal & Hormonal Health

What Does Luteal Phase Discharge Look Like?

Learn more about luteal phase discharge, what’s normal, and when to see your healthcare provider.

What Does Luteal Phase Discharge Look Like?
A female statue in dismay as she does not know what to do about her mycoplasma symptoms
Vaginal & Hormonal Health

What You Should Know About Mycoplasma Symptoms

Learn more about two important types of Mycoplasma that can affect vaginal health.

What You Should Know About Mycoplasma Symptoms
An macro shot of colorful fungi to represent a yeast infection
Vaginal Microbiome 101

How Often Can You Take Fluconazole for a Yeast Infection?

Learn everything you need to know about taking fluconazole for yeast infections, how often to take fluconazole, plus what to do if treatment fails.

How Often Can You Take Fluconazole for a Yeast Infection?
An up-close photo of a yellow looking yeasty fungi that looks like it could cause a yeast infection during a period
Vaginal & Hormonal Health

Why Do I Always Get a Yeast Infection During My Period?

Do yeast infections always seem to pop up right around your period? Well, you're not alone. Learn why you might be getting a yeast infection during your period, and what you can do about it.

Why Do I Always Get a Yeast Infection During My Period?
A scientist trying to figure out what is Mycoplasma hominis
Vaginal Microbiome 101

What Is Mycoplasma Hominis?

Learn more about the bacteria Mycoplasma hominis, how it affects your vaginal health, and what it means if it shows up in your test results.

What Is Mycoplasma Hominis?
Bacteria up close on a petridish that represent AV vs BV
Vaginal Microbiome 101

AV vs BV: What Is the Difference?

While aerobic vaginitis and bacterial vaginosis can both cause similar symptoms, it's crucial to differentiate between the two so you can get the right care.

AV vs BV: What Is the Difference?
bv treatment online
Vaginal & Hormonal Health

Can I Get BV Treatment Online?

Learn more about how you can get bacterial vaginosis treatment from the comfort of your own home with Evvy.

Can I Get BV Treatment Online?
A woman trying some kind of cream, known to be one of the best products for vaginal odor
Vaginal & Hormonal Health

The Best Products for Vaginal Odor

Learn more about what causes vaginal odor, how to treat and prevent it, and when to see a healthcare provider.

The Best Products for Vaginal Odor