Precision Nutrition

If you’ve heard of billionaire Bryan Johnson, you’ve likely encountered the phrase “bio age testing.” Johnson, the subject of the Netflix documentary Don’t Die, says he’s on a quest to achieve the lowest possible “biological age” (also known as bio age). He reportedly spends millions each year on anti-aging treatments—dozens of daily supplements, weekly acid peels for his skin, injections to boost collagen production, hyperbaric oxygen therapy, and

Many people with IBS would trade 10 to 15 years of life expectancy for an instant cure for their condition. This is according to the results of a study of nearly 2,000 people with irritable bowel syndrome (IBS).1 In other research, people with IBS said they would take a medicine that carried a one percent risk of sudden death if it would cure their symptoms2—which can include urgent bouts of diarrhea, gas, or persistent constipation. Some people with IBS experience bouts of abdominal pain they d

Do you want to live longer? If you’re like most people, your answer is probably, “Yes!” And, you probably want to live not only a longer life, but also a healthier one. If so, you don’t have to look very far to find claims about how to improve—no, “optimize”—your health. Want to reverse chronic disease? Extend that youthful glow? Live to 115… or forever? Lots of fitness influencers, authors, and podcasters will tell you how to do it. But are their ultra-specific, advanced protocols necessary—or

“I want to know I’m doing absolutely everything I can to preserve my health for as long as possible.” We hear this kind of thing a lot. People tell us they not only want to stay in good shape as they age, they also want to outlive their peers and age expectancies. Imagine you could maximize your healthspan and lifespan, fend off disease, and generally remain fit, lean, and youthful into your 90’s, 100’s, and then some. Sounds pretty compelling, doesn’t it? There’s just one problem: Common longev

Are vegetable and seed oils “toxic”?! From TikTok to bestseller lists, vegetable oils—a.k.a. “seed oils”—are a big topic right now. To be fair, folks have debated the merits of vegetable oils dating back to when they first entered the marketplace. More recently, however, with the advent of the carnivore diet, vegetable oil hate has roared back into the socials. Maybe you’ve come across posts that refer to these cooking oils as “toxic sludge,” “motor oil,” “the hateful eight,” and “the biggest ca

While our ancestors relied on their senses to assess how they were doing, increasingly, we rely on gadgets. Today, if you’re curious enough, you can measure your heart rate, your step count, your exercise intensity, and your sleep quality—sometimes all on one sleek device. In the best cases, these devices offer a bridge between what you subjectively feel and what you can objectively measure. This is generally a really cool and amazing thing. Our subjective feelings and assessments matter, but th

“I worried that if I stopped tracking macros, I would lose my physique.” After years of careful macro tracking, Dr. Fundaro finally admitted to herself that the method no longer worked for her. Yet she was afraid to give it up. If anyone should feel confident in their food choices, it would be Dr. Gabrielle Fundaro. After all, Dr. Fundaro has a PhD in Human Nutrition, a decade-plus of nutrition coaching experience, and six powerlifting competitions under her belt. Yet, when she was really honest

Reviewed by Brian St. Pierre, MS, RD and Helen Kollias, PhD It’s like my thoughts were under a pile of garbage. On a Friday night, as my husband and I tried to figure out where to eat, a typical conversation would go like this: Me: Do you want to go to that restaurant? Him: What restaurant? Me: I can’t think of the name. We’ve eaten there before. It’s that place with the peanut shells on the floor? It’s next to… You know… It’s on that road where we used to take the dog to the vet. Do you

“I work with coaches and other people who know too much.” Kate Solovieva is a former professor of psychology, a PN master coach, and PN’s director of community engagement. And the above quote has become one of her taglines. Though Coach Kate has coached thousands of “regular” clients, her specialty is coaching other coaches. Through her work as an instructor with PN’s Level 2 Master Health Coaching Certification, a facilitator for PN’s private online coaching communities, and a coach in her own

“I just bought a new BPA-free tupperware set.” This comment, coming from my friend Anna, caught me off guard. Anna’s a highly competent law professional. She’s a critical thinker and she fights in the heavyweight division when it comes to cutting through BS. But the Anna I knew was falling into some painful traps that seemed to be bypassing her inner hawk-like skeptic. She’s wanted to lose around 15lbs for some time now and came to me to share how stuck she was feeling in this goal. She brought