Why the Internet's Favorite GI Doctor Joined Throne

Dr. Karan Rajan, is a bestselling author, former GI surgeon, and one of the world's leading voices in digestive health education.

Now, he's partnered with Throne as Chief of Science to help you finally understand what your body has been telling you all along.

See what you're missing

Dr. Karan Rajan

Doctor, Author, and Host of Dr. Karan Explores Podcast

Digestion

Your poop is talking.
Are you listening?

Your stool is one of the most responsive indicators of what's happening inside your body. It reacts to what you eat, how you sleep, your stress levels, even that extra glass of wine last night.

That's what makes it so powerful.

Your stool can reveal:

  • Diet impact. See how different foods affect your digestion within days, not months

  • Stress response. Your gut is often the first place stress shows up in your body

  • Fiber and hydration levels. Consistency and frequency tell you more than you think

  • Early warning signs. Changes in color, shape, or pattern can signal issues worth investigating

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Hydration

Your pee holds clues you're probably missing.

Most people think of urine as just a hydration check. Yellow means drink more water, clear means you're good. But that's barely scratching the surface.

Your pee can tell you about so much more—including things most people don't think about.

What your urine can reveal:

  • Hydration level: Yes, but with actual trends over time, not just a single glance

  • Urinary function: Flow rate, frequency, and patterns can indicate how well your urinary system is working

  • Prostate health: For men, changes in urinary patterns are often the earliest sign of prostate issues

  • Kidney function indicators: Color and consistency changes can signal issues worth discussing with your doctor

Throne tracks these patterns passively, so you can catch changes early—without ever having to think about it.

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Backed by leading GI researchers and medical advisors

Dr. Karan is Throne's Chief of Science, supported by top GIs on the Clinical Advisory Board.

Dr. David Rubin

Professor of Medicine and Section Chief of G.I., Hepatology, and Nutrition at UChicago

"Throne’s innovative approach holds great promise to empower patients and non-patients with knowledge about their health. It has the potential to improve the accuracy and efficiency of clinical research as well."

Dr. Karan Rajan

Doctor, Author and Host of Dr. Karan Explores

“We track our steps, our sleep, our heart rate — but one of the biggest predictors of long-term health has been ignored… until now. Throne fixes that gap.”

Dr. Vipul Jairath

Professor of Medicine at the Schulich School of Medicine and Dentistry

"Throne has the potential to change IBD research by improving data collection methods and endpoints, especially compared to patient recall."

Dr. Satish Rao

Professor of Medicine

“Throne is potentially helpful for monitoring bowel symptoms in constipated patients over longer time frames .”

Mark Pimentel

Dr. Mark Pimentel

executive director of the Medically Associated Science and Technology (MAST) Program

“Throne has the potential to both improve IBD patient care today and speed up valid clinical research in the coming years.”

John Capodilupo

Founder of Throne

“I helped pioneer health wearables at WHOOP, but Throne is personal. Throne makes everyday health signals effortless to access hands-free and invisible”

Listen to your gut.

Throne Gut Health Sensor in a naturally lit bathroom with hinoki wood paneling

Throne Gut Health and Hydration Sensor

The smart toilet-mounted sensor for gut health insights, every day.

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HSA/FSA Eligible
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What people like you are saying

Anna B.
Mom & Throne Member
"Once I saw how bad my gut health scores were, it was a catalyst. Now I'm closer to 77 on average now, going up to 90 at times."
Josh P.
Throne beta member
Anna B.
Influencer & Throne Member
"Having immediate data at my fingertips keeps health top of mind and that is an absolute game changer!"
Cassie W.
Throne beta member
Chase D.
Throne Member with Ulcerative Colitis
"Throne brought to my attention that I had a habit of waking up at 2am to pee. I changed my routine, and now wake ups are completely gone."
Alex H.
Throne beta member
FAQ

Frequently Asked Questions

Answers to questions from users just like you.

How difficult is installation?

Throne fits standard toilets and installs in minutes. No special tools required. Our setup guide walks you through each step.

Is my data private?

Absolutely. We use bank-grade encryption and never sell personal information. Your health insights remain completely confidential.

What if I need help?

Our support team is available via email and chat. We're committed to ensuring your Throne experience is smooth.

Can I cancel my order?

Yes. You can cancel your pre-order anytime before shipping with no penalties. We make the process simple and straightforward.

How does using my HSA/FSA account save me money?

HSA/FSA accounts were created so individuals could use pre-tax money to pay for expenses used to treat, mitigate, or prevent a diagnosed medical condition. Because HSA/FSAs use pre-tax money, you’re getting more purchasing power for your dollars. Rather than pay taxes on income and then spend it on health items, qualified customers can use pre-tax funds to invest in their health. An individual can contribute up to $4,150 pretax to their HSA per year, or $8,300 for a family (plus an additional $1,000 if you are at least 55 years old. Individuals can contribute up to $3,200 pretax to their FSA per year (with an additional $500 in employer contributions allowed).

What are FSA and HSA accounts?

Health savings accounts (HSA) and flexible spending accounts (FSA) are programs that allow you to set aside pre-tax dollars for eligible healthcare expenses. If you’re unsure whether or not you have an HSA or FSA account, please check with your employer or insurance company.

Can I use my HSA/ FSA card at Throne?

We do not recommend attempting to checkout with your HSA/FSA cards for compliance purposes. We strongly encourage simply transacting with your normal credit or debit card, and submitting for reimbursement as outlined above for the greatest likelihood of success.

How long does HSA or FSA reimbursement take?

For most FSA/HSA administrators, your expenses will be approved within days when you submit your claim for reimbursement along with your receipt and a Letter of Medical Necessity. The exact timing will vary based on your administrator.

Do I need to take Truemed’s survey every time I make a purchase from Throne?

If you have already received a Letter of Medical Necessity for purchasing specific products from a merchant, you do not need to complete Truemed’s survey again so long as your Letter of Medical Necessity remains valid. Letters of Medical Necessity are typically valid for 12 months after they are first issued. You do still need to submit your receipts for reimbursement with your HSA/FSA administrator.

What is a Letter of Medical Necessity, and how is this compliant?

The items in your Truemed Letter of Medical Necessity (“LMN”) are now qualified medical expenses in the same way a visit to the doctor’s office or pharmaceutical product is. There are thousands of studies showing food and exercise is often the best medicine to prevent and reverse disease. Exercise qualifies as a qualified medical expense with an LMN. Food, supplements, and other wellness purchases qualify as medical expenses if they treat or prevent an illness, and a doctor substantiates the need. Your Truemed LMN satisfies all IRS requirements to make your wellness spend fully reimbursable.

Are there fees associated with using Truemed's services?

The cost is included with your purchase, as long as you are shopping with a Truemed partner merchant.

When should I use my FSA/HSA dollars?

You can use your HSA/FSA dollars all year long. However, most FSA dollars expire at the end of the year and unused money may not rollover into the next year. Make sure to spend the rest of your FSA dollars before December 31st — use it, so you don’t lose it!

I don’t have enough funds in my HSA/FSA account to reimburse the entire purchase. Can I still use Truemed?

Yes. You can still submit for partial reimbursement. For example: if you purchase an eligible item for $100 but only have $60 in your account, you can reimburse $60 of your purchase with your tax-free funds (with the remaining $40 paid for as normal).

What if my reimbursement is rejected by my administrator?

Please contact us at support@truemed.com so we can help you troubleshoot the issue. HSA/FSA plan administrators often have detailed requirements, so it may be as simple as re-issuing your Letter of Medical Necessity using the administrator’s form.

Listen to your gut

Take control of your gut health with Throne.
Start tracking today
HSA/FSA Eligible  |  Recommended by Top GIs