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.

Woman holding Bulletproof A-D-K Vitamins bottle in one hand & the orange capsule in the other hand close to the chest

What Is Vitamin K? How This Vitamin Supports Bone and Heart Health

While vitamin D and vitamin C get discussed far more often, there’s an under-appreciated nutrient that deserves more attention: vitamin K. There are two types of this fat-soluble vitamin, each serving unique roles in supporting bone health, heart health and normal blood clotting. Since it’s not easy to obtain from...

A jar of Bulletproof Vitamins A+D+K Gummies

Inside Bulletproof: Gummy Vs. Pill Vitamins—5 Things You Should Know

In the contest of gummy vs. pill vitamins, who do you choose? These days, chewable adult gummy vitamins are all the rage. We’ve graduated from the chalky cartoon vitamins of times past (sorry, Flintstones!), and have evolved into more enjoyable options, including Bulletproof Gummy Vitamins, a new line of targeted, ...

a hand pours a scoop of unflavored collagen peptides into a clear mug of coffee

How To Find Your Ideal Protein Intake

All the praise protein receives is for good reason. Protein is one of the OG macronutrients. (Carbohydrates and fats are the other two.) It grows and repairs muscle (#gains), keeps your metabolism humming and curbs your appetite. But amongst all this talk, this thought has likely crossed your mind: “How...

Slice of keto coffee cake made with Bulletproof ingredients

Food and Coffee Pairings: The Best Combinations for Every Coffee Lover

Just like finding the perfect cheese to complement your favorite wine, food and coffee pairings matter, too! While a cup of hot (or cold) coffee certainly tastes great on its own, why not make it part of a delicious and nutritious meal? Pairing food with coffee isn’t just about flavor—it’s...

Bulletproof Brain Octane oil being poured into mug of coffee

How to Take MCT Oil: Best Ways & Health Benefits

Whether you’re on the keto diet or want to add more quality fats, MCT oil is one of the most versatile supplements. MCTs, or medium-chain triglycerides, are fatty acids naturally found in coconut oil. Your body turns MCTs into molecules called ketones, which help curb cravings and power your brain....

Ketogenic diet foods laid out on a table

What is Metabolic Flexibility and How Can You Achieve It?

Being flexible comes in handy in all sorts of situations. Bad weather keeping you from your morning run outside? No problem, head to the gym instead. Favorite coffee shop closed? Make your own Bulletproof Coffee at home. Took a wrong turn while driving? Simply find another route. Your body’s metabolism...

Woman drinking beer

How Alcohol Affects Your Immune System and How to Bounce Back

Hitting up a happy hour or relaxing with an adult beverage at home is not an uncommon way for people to wind down for the day or to socialize with friends. When it turns to excessive alcohol consumption, that’s when your body raises red flags. You already know alcohol is...

Jar of coffee grounds next to rolled up white towel and coffee scrub mixure

10 Creative Ways to Repurpose Used Coffee Grounds for a Greener Lifestyle

Coffee grounds are more than just a byproduct of your morning brew–they’re a versatile resource with many surprising uses. Instead of tossing them in the trash, consider repurposing them around your house and garden. The grounds’ coarseness, residual caffeine, pigment and nutrients still offer lots of potential uses. Grab yourself...

Bulletproof coffee packages, The High Achiever, The Original and the Mentalist, laying on coffee beans.

Inside Bulletproof: How Our Clean Coffee is Made

Clean coffee: what does it really mean? It refers to coffee beans produced without harmful contaminants such as mycotoxins and mold-related toxic substances. Making mold-free coffee means making a better choice for your health while supporting sustainable farming practices that benefit the environment. Bulletproof is committed to producing quality coffee...

Bulleproof Ground Coffee, Brain Octane Oil & Ghee lined up sitting on kitchen counter next to coffee mug and a french press

16 Ideas for Delicious Bulletproof Coffee Hacks

In addition to putting butter in coffee, I’ve experimented with adding other nutrients to create new flavors that have an even bigger impact on how I feel. It turns out I’m not alone. Bulletproof fans add a lot of creative things to their daily Bulletproof Coffee recipe. This inspired me...

Magnesium Deficiency Signs, Symptoms and How to Fix It

Signs of Magnesium Deficiency

Could you be suffering from a magnesium deficiency? Magnesium is a crucial mineral that plays a vital role in helping your body operate at its best. It contributes to over 300 functions, including regulating blood pressure, muscle and nerve activity, protein construction, bone development and more. Unfortunately, magnesium deficiency symptoms...

A black woman meditating outside

Get Outside: The Health Benefits of Fresh Air and Forest Bathing

We’ve all felt the benefits of outdoor activities—possibly without even knowing it. The moment you step outside and fill your lungs with fresh air, you notice that stress seems to just start melting away. However, the act of prioritizing spending time in nature is sometimes easier said than done. Between...

Keto bread with butter slices

Keto Bread Recipes for Every Craving

If you’re on the keto diet, you know the struggle of finding keto bread that tastes good. Many miss the mark with an eggy smell and texture. You may have even given up hope of finding the perfect loaf — until now. These keto bread recipes capture the same spongy,...

An overhead shot of someone baking with Bulletproof ingredients

Baking With Sugar Substitutes 101: Everything You Should Know

Baking with sugar substitutes isn’t as simple as using equal amounts in place of regular sugar. In fact, the standard sweetener-to-sugar ratio can sometimes lead to the crystallization of your baked goods. So, when making substitutions, you must account for texture and volume, which can also throw off cooking time....

Digestive enzymes guide

The Ultimate Digestive Enzymes Guide

Digestive enzymes break down food into the nutritional building blocks that your body needs. Digestive enzymes are naturally released to assist the digestive process. But in some instances, your body might not produce enough of a specific enzyme or enzymes. If you experience occasional digestive issues like bloating, indigestion or...

Hand pouring Bulletproof coffee from a French press with a bag of Bulletproof Original coffee sitting next to it on a cutting board in a kitchen setting.

The 4 Worst Things to Put in Your Coffee

Coffee is the morning ritual that fuels you. And what you put into your belly first thing each a.m. can make or break your entire day—we’re talking energy slumps, irritability and cravings. For those reasons, it’s important to choose your brew wisely. Here are the four worst things to add...