Reviewer: Theresa Greenwell

Theresa Greenwell is the Scientific Affairs Manager at BulletProof 360. She received her degree in Dietetics from the University of North Carolina at Greensboro and has over 16 years of experience in supplement and nutritional product formulating, regulatory affairs, scientific research, and marketing. Having grown up as an overweight child, she strives to make products that will help others reach their weight and health goals in a way that is maintainable, not just temporary.

Theresa is passionate about animal welfare, history, health and hanging out with friends and family. She enjoys archery, target shooting, singing, dancing, hiking, roller skating and amusement parks.

Bulletproof travel products in orange purse

10 Travel Hacks to Stay Bulletproof on the Road

Traveling is all fun and games until you’re hangry in the car and haven’t had a full night’s sleep in three days. Fortunately, these travel hacks (directly from the Bulletproof team!) will make your next trip 100% easier. From combating jet lag to staying fueled between flights, here are just...

How Your Gut Microbiome Influences Your Hormones

How Your Gut Microbiome Influences Your Hormones

Throughout the day, your hormones ebb and flow like the tides. A surge of cortisol wakes you up in the morning, boosted by your cup of coffee. Then in the evenings, melatonin lulls you to sleep. Around mealtimes, leptin signals when it’s time for food. And while you’re eating, ghrelin...

A variety of halved coconuts

MCT Oil vs. Coconut Oil: What’s the Difference?

If you’ve been drinking Bulletproof Coffee made with MCT oil, you’ve already felt the powerful effects these brain-boosting fats have on your energy and cognitive function. MCT oil, especially C8 MCT oil, in your coffee and on your food can raise fat-burning, brain-fueling molecules in your body called ketones much...

5 Ways to Support Your Body's Sleep Cycle

5 Ways to Support Your Body’s Sleep Cycle, According to a Circadian Rhythm Expert

Have you ever noticed that you feel wide awake after a late-evening trip through the grocery store? Or, do you have a tendency to wake up between 3:00 and 5:00 a.m. if you’ve had too much to drink the night before? There’s an explanation for those, and other reasons your...

Man in bed suffering from insomnia and sleep disorder

Hack Your Dreams for Learning, Problem Solving, and More

You might think of dreaming as a time when your mind wanders aimlessly, playing out all kinds of crazy scenarios. Are dreams just random hallucinations, or are they an integral part of your brain’s inner workings? Harvard psychologist Deirdre Barrett, Ph.D. has focused her career on the science of dreaming,...

rooibos tea benefits

Study Shows Collagen Peptides are More Than Protein Building Blocks

I realized how important collagen was when I was hiking in Tibet, and the long trek plus being overweight destroyed my knees. When we went out to eat that night, I knew I needed collagen or cartilage, so I ordered a big bowl of steamed pig’s ears. It tasted about...

Nootropics Cocktail

Move Over, Alcohol. This Nootropics Cocktail Gives You a Buzz – Without the Hangover

Sometimes, nothing quite takes the edge off after a long day like a glass of wine. But the not-so-fun part is the hangover the next day. Plus drinking regularly isn’t doing your health much good. So what do you do when you want to feel relaxed, minus the booze? Enter...

woman touching face and smiling

Why Your Skin Needs Collagen to Stay Young

If you follow the Bulletproof Diet, you know that sipping bone broth and drinking collagen peptides powder can help you look and feel great. Collagen supports glowing and hydrated skin. It’s no wonder that collagen supplements have become a common addition to many wellness plans. But what does collagen do...

fresh coffee under a single serve coffee machine with a jar of coffee beans

All the Reasons to Drink Coffee Before Your Workout

Thanks to social media apps like TikTok and Instagram, we’ve seen many coffee trends come and go. They start by making a splash and then quietly disappear. But the best ones? They earn a permanent spot in your routine—just like your daily cup of coffee. Protein coffee (also called “proffee”)...

person sitting on toilet

Can’t Poop? Science Says the Squatty Potty Helps You Poop Faster and Better

Everyone poops. But the Squatty Potty promises to “give you the best poop of your life, guaranteed.” Plopping onto the scene with a successful Shark Tank debut and an unforgettable unicorn-themed commercial, this simple squat stool is breaking down taboos around our daily defecations, sparking odd dinner-time conversations, and helping...

Your Sleep Quality Declines As You Age. Here’s What to Do About it

Your Sleep Quality Declines As You Age. Here’s What to Do About it

When people feel chronically tired, they are usually under the impression that they need to go to bed earlier. It’s not always that simple, though. A great night’s sleep involves more than just your bedtime. What happens behind the scenes determines how you’ll feel in the morning. Sleep scientist Dr....

Woman working out

Weight Management Supplements That Actually Work

Browse the aisles of any drugstore, and you’ll find dozens of powders and pills that promise to melt fat and take off the weight. While there’s no magic pill for weight loss, weight management supplements can make the job easier. These work by speeding up your metabolism and increasing your fat...

Woman looking forward

Histone Acetylation: The Other Superpower of Ketosis

When I first went into nutritional ketosis by restricting carbs, I felt like a new person. Actually, I felt like garbage for a few days, then I felt like a new person. There’s a good chance you’ve heard people rave about the benefits of ketosis — increased energy, effortless fat...

Keto breakfast taco with bacon and guacamole

These 33 Easy Keto Recipes Will Make You Want to Go Low-Carb

Going low-carb doesn’t have to be hard: These easy keto recipes prove you can stick to your plan without turning your whole kitchen upside down. These easy keto recipes cut down on ingredients and prep time so you can have your meals ready in minutes. Use them for fast weekday...

Man holding water bottle

Obesogens: How Toxic Chemicals Make You Fat and What to Do About It

Have you noticed that the Bulletproof Diet doesn’t ask you to count calories? That’s because you don’t have to track your macros to lose weight. Ever. Weight loss isn’t a game of eat calories, burn calories. Your body is much more complex than that. There are slim people who can...

Cauliflower with supplements

Choline Deficiency: Everything You Need to Know About This Essential Nutrient

What is choline? Choline is crucial for your body to function because it’s involved in many different processes. It is essential to get enough for your health. Choline contributes to the formation of cell membranes. It also contributes to neurotransmitter synthesis, fat metabolism, liver function and DNA synthesis. Certain populations...