You don’t play at an elite level at 40 by guessing about your health. @CP3 uses data to understand what his body is telling him. Function members have access to 160+ lab tests. Know your numbers. Not medical advice. Consult a medical professional with any medical questions. For marketing purposes only.

@MrBeast's most heartfelt health challenge just ended. Function was there from the start. For six months, contestants Sara and Tre changed how they ate and moved, with $250,000 on the line. Watch the full video here: youtu.be/RE3_PGwDwhw?si=ccB2…

4 snacks @TheRue always has on hand for her health: 1️⃣ Walnuts — They support brain health and libido. 2️⃣ Pumpkin seeds — A solid source of zinc, which plays a role in hormone regulation. 3️⃣ Cucumbers — An easy way to sneak veggies into her and her daughter’s day. 4️⃣ World’s Smartest Smoothie — Ingredients curated by Mark Hyman, M.D., and Function. These are the staples she keeps stocked for her and her family's health.

@TheRue's grocery bag has a few non-negotiables: ✔️ Chickpeas — For salads or homemade hummus if you're feeling ambitious. ✔️ Sardines — High in omega-3s and good for brain health. ✔️ Brazil nuts — Just 2 cover your daily selenium, which supports thyroid function. ✔️ Dark chocolate — 70% or higher, for lower oxidative stress and better blood flow to the brain. As she puts it: "If there wasn't already enough reason to love chocolate, I just gave you two more."

@function is partnering with @GoogleHealth. Later this fall, millions of people will be able to track their day-to-day health—and see what’s behind it. Google Health and Fitbit track your fitness, sleep, health metrics & more. Function offers access to 160+ lab tests and Medical Intelligence Lab. ™️ Together with Google Health Coach, we’re bringing more context and personalization to your health data that you can bring into your everyday choices.

Women deserve more information about their bodies. And more say in what happens next. We’re welcoming Dr. Jen Ashton to Function’s Medical & Scientific Board. A double board-certified physician in OB-GYN and Obesity Medicine, she’ll help guide our work in women’s health so more women can understand their biology, connect the dots, and make informed decisions about their health. After caring for thousands of women over two decades, this work is personal to her. She’s seen how earlier access to information can make a difference—and wants more women to have it. That’s central to Function’s mission to enable everyone to live 100 healthy years: helping people understand their health and take action earlier. Meet Dr. Jen Ashton and hear what drew her to Function.

Is "Ferritin Face" real? Here is what the science actually says. If you’ve seen the "Ferritin Face" trend popping up on your feed, you’re not alone. Posts claim that dark under-eye circles, sallow skin, and dullness are instant giveaways of low iron. Here is the breakdown: 1️⃣ It’s not a formal diagnosis: Dark circles can be caused by genetics, thin skin, or lack of sleep. While iron deficiency can cause paleness (which can make dark circles look darker), your face alone can’t diagnose your iron levels. 2️⃣ Diagnostic thresholds have changed: The American Society of Hematology (ASH) recently updated guidelines to recommend a higher ferritin threshold in most adults.— it's no longer 15ng/ml. 3️⃣ Check your health: Ferritin reflects your iron stores. It typically falls before hemoglobin and serum iron do, so it's one of the earlier signals of low iron. Always talk with your healthcare provider before taking iron supplements. Not medical advice. Consult a medical professional with any medical questions. For marketing purposes only.

Watch the full video to learn about the 160+ lab tests available through Function, including key iron markers like ferritin. youtu.be/gTzl85ADfuU

You were told your iron levels are fine. But did anyone check your ferritin? Ferritin is a marker of the body’s iron reserves, and it can be low even when hemoglobin is within the lab reference range. And that difference matters when you’re trying to understand fatigue, thinning hair, trouble focusing, or changes in exercise performance. One number doesn’t tell the entire iron story.

Men often fear what they'll find when checking their health, but learning what’s actually happening in their body is what shifts the power back to them. That’s exactly what @function was built for. @CP3 @TheNBPA

Share this with your loved ones. Cari’s story could be their story. Cari, a 51-year-old mom of 4, did lab testing through Function, including the Galleri® Multi-Cancer Test, and was alerted by the Function clinical team with life-changing news: The test had identified a signal linked to ovarian cancer. She joined Function in pursuit of wellness. She never expected to learn about potential cancer. But this new information gave her the power to take control. Cari completed ultrasounds to confirm the diagnosis. Stage 3B ovarian cancer—caught in the nick of time. Early testing can change everything. It’s time to test and know.

We went on a hot girl walk with Rumer Willis and Dr. Danna Chung—and got a 101 guide to understanding your hormones. The takeaway: Understand your body early. What's worth testing? Hormones, nutrients, inflammation, metabolism—so you can see the patterns of how your health may be shifting over time. As Rumer puts it: "It's like making a map of your body."

Your brain plays a key role in regulating your hormones—here's how to see a more complete picture. An MRI can look at the brain itself, offering insight into whether something might be affecting those hormonal signals. Labs and MRI each tell a different part of the story of your health. Dr. Danna Chung's hope for Rumer's MRI results? "Really boring." Because a boring brain = nothing concerning was found.

Fertility isn’t really covered in medical school. Dr. Danna Chung learned that firsthand—as a patient, and as a doctor working to close that gap for other women. Her take: The experience of becoming a mother isn't one-size-fits-all. That's why knowing how your body is functioning matters—labs and an MRI together give a clearer picture.

Becoming a mom changed how Rumer takes care of herself. Her advice: 
 - Start asking questions. - Start tracking your cycle. - Start gathering your own information so you can advocate for your health with confidence. As she puts it, “When you have real information in your hand, it becomes a lot harder for people to ignore you.” @TheRue tests and tracks her health with 160+ lab tests through Function. You can, too.

“I’m the health nut in my family. I'm the one slinging cotton underwear at my sisters and reminding my mom to stay on top of her health. Helping my family stay healthy feels more important than ever. Next for me: An Annual MRI through Function. I want to know what’s happening inside my body and make sure I can be there for my family for decades to come.” —Rumer Willis