Sarah Kester, Author at Bulletproof https://www.bulletproof.com/author/sarahkester/ Shop Functional Nutrition Mon, 27 Apr 2026 16:26:37 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.bulletproof.com/wp-content/uploads/2025/06/favicon-bp-75x75.jpg Sarah Kester, Author at Bulletproof https://www.bulletproof.com/author/sarahkester/ 32 32 Does Coffee Affect GLP-1? Here’s What the Science Suggests https://www.bulletproof.com/coffee-articles/does-coffee-affect-glp-1/ Mon, 08 Sep 2025 20:19:50 +0000 https://www.bulletproof.com/?p=900107620 Weight management drugs like Ozempic and Wegovy may be a hot topic, but they wouldn’t exist without the real deal: GLP-1. Short for glucagon-like peptide-1, GLP-1 is a hormone your body makes naturally. It plays a key role in blood sugar control, appetite regulation and satiety. Supporting healthy GLP-1 levels can help with weight management […]

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]]> Is Whey Protein Bad for You?  https://www.bulletproof.com/supplement-articles/is-whey-protein-bad-for-you/ Fri, 01 Aug 2025 16:28:03 +0000 https://www.bulletproof.com/?p=900107396 The conversation around whey protein is a mixed bag. While it’s known for supporting muscle tissue synthesis and support as we age, some see it as a supplement reserved for bodybuilders. There are even misconceptions that it may cause acne, disrupt hormones or trigger lactose intolerance discomfort. All this begs the question: Is whey protein […]

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]]> Best Coffee Gadgets to Improve Your Coffee and Save You Time https://www.bulletproof.com/coffee-articles/best-coffee-gadgets/ Wed, 09 Jul 2025 14:29:51 +0000 https://www.bulletproof.com/?p=900107236 You don’t have to be a coffee snob to desire better coffee. It’s a useful goal for anyone looking to save money, savor every sip of their daily brew, and get precious time back in their busy day. The way to get there? Coffee gadgets. These handy tools open a latte possibilities by elevating your […]

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]]> Collagen Smoothies: Benefits and Delicious Recipes to Try https://www.bulletproof.com/collagen/collagen-smoothie-recipes-benefits/ Mon, 23 Jun 2025 16:25:34 +0000 https://www.bulletproof.com/?p=900106983 Looking to whip your daily wellness into shape? Look no further than collagen smoothies. On their own, smoothies are a go-to for being a quick, delicious and versatile way to pack essential nutrients in one slurpable drink. But with collagen? Smoothies become next-level beneficial. Collagen is the body’s most abundant protein, responsible for giving support […]

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]]> How Your Coffee Ritual Can Help Support Mental Wellbeing https://www.bulletproof.com/coffee-articles/coffee-mental-health-reduce-stress/ Fri, 20 Jun 2025 20:33:24 +0000 https://www.bulletproof.com/?p=900106969 Coffee has become more than just a beverage—it’s a daily ritual that helps people ease into their day. Research has found that 76% of Americans drink coffee daily. People seem to enjoy the comfort of the routine as much as the coffee itself—the serene sounds of brewing, the rich aroma filling the air and the […]

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]]> A Beginner’s Guide to Specialty Coffee Explained Simply https://www.bulletproof.com/coffee-articles/specialty-coffee/ Thu, 24 Apr 2025 13:59:55 +0000 https://www.bulletproof.com/?p=900106502 While most people think of coffee as simply “good” or “bad,” there’s a whole world that goes beyond your average cup of Joe—it’s called specialty coffee. The term may sound intimidating, but it simply means coffee that’s been handled with care from start to finish—or from farm to table. It’s the highest quality coffee you […]

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]]> Choosing the Best Coffee for Your Brewing Method https://www.bulletproof.com/coffee-articles/best-way-to-make-coffee/ Wed, 23 Apr 2025 13:56:50 +0000 https://www.bulletproof.com/?p=900106445 How do you make your coffee? Your brewing method affects the taste, aroma and strength of your coffee. The right beans, roast level and grind size make a big difference. Understanding these factors helps you get the best tasting coffee every time. Whether you’re making cold brew, French press or a quick cup at work, […]

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]]> Best Coffee and Healthy Breakfast Pairings to Try https://www.bulletproof.com/coffee-articles/best-coffee-and-healthy-breakfast-pairings-to-try/ Wed, 16 Apr 2025 15:48:56 +0000 https://www.bulletproof.com/?p=900106427 Wine and steak aren’t the only match made in heaven. Combining the right flavor profile of coffee with the right breakfast foods amplifies the delectable flavors. Plus, combining coffee with balanced foods starts your day right by supporting energy needs, digestion and overall well-being. To help you make delicious discoveries, we’ve compiled breakfast and coffee […]

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]]> Habit Stacking Builds Long-Term Habits—Here’s How to Master It https://www.bulletproof.com/lifestyle-articles/habit-stacking-builds-long-term-habits/ Tue, 01 Apr 2025 18:38:08 +0000 https://www.bulletproof.com/?p=900106299 By nature, humans are creatures of habit. We repeat the same behaviors on the reg until they become automatic—think brushing your teeth, brewing your morning coffee and driving home from work. But some habits require more mental energy and toughness than others, like trying to eat healthier and hitting 10k steps daily. Similarly, bad habits […]

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]]> Understanding Coffee Acidity: Flavor, Health & Acidity Levels https://www.bulletproof.com/coffee-articles/understanding-coffee-acidity-flavor-health-acidity-levels/ Tue, 25 Mar 2025 17:50:16 +0000 https://www.bulletproof.com/?p=900106285 Acidity in coffee gets a bad rap. Many assume it means a sour tasting coffee, like someone squeezed a grapefruit into it. But coffee loyalists know that acidity in coffee doesn’t necessarily indicate the pH level of a coffee. Instead, a coffee’s acidity is a tasting characteristic, alongside other important markers, like aroma, sweetness and […]

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]]> How Caffeine Affects the Body: Myths vs Facts https://www.bulletproof.com/coffee-articles/how-caffeine-affects-the-body-myths-vs-facts/ Fri, 07 Mar 2025 18:46:05 +0000 https://www.bulletproof.com/?p=900106201 The facts are in: The world is obsessed with caffeine. Whether gulping down coffee, nursing an energy drink or capping off the evening with espresso martinis, 90 percent of American adults consume the plant-based stimulant daily. A lot of the buzz has to do with benefits—energy, focus and concentration, just to name a few. But […]

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]]> High-Protein Mint Chocolate Chip Shake https://www.bulletproof.com/recipes/high-protein-mint-chocolate-chip-shake/ Thu, 06 Mar 2025 05:15:30 +0000 https://bpstaging.bulletproof.com/?p=900105425 Looking for a sweet treat that’s as beneficial as it is delicious? You’ve come to the right place. This mint chocolate chip shake is ultra-creamy, easy to make and utilizes better-for-you ingredients for a refreshing, minty taste. Plus, it incorporates collagen for an all-over health boost. Don’t be surprised if this recipe dupe makes you […]

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]]> How Stevia Impacts Your Body: A Zero-Calorie Sweetener Guide https://www.bulletproof.com/diet-articles/how-stevia-impacts-your-body-a-zero-calorie-sweetener-guide/ Fri, 21 Feb 2025 19:27:18 +0000 https://www.bulletproof.com/?p=900106112 None of the sugar substitutes—aspartame, sucralose and saccharin—take the cake quite like stevia. The naturally occurring sugar substitute comes from the Stevia rebaudiana plant. It has zero calories, making it a solid option for those looking to cut calories without sacrificing flavor. Stevia is also renowned for not raising blood sugar levels. But are the […]

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]]> Collagen Protein: Benefits, Side Effects, and How It Compares https://www.bulletproof.com/collagen/collagen-protein-benefits/ Fri, 10 Jan 2025 21:35:14 +0000 https://www.bulletproof.com/?p=900105985 What you’ve heard about collagen protein is true — it’s good. This structural protein is a super glue that holds the body together. This includes the skin, muscles, ligaments, and connective tissue. But when you factor in the many other protein sources, how does collagen compare? And what’s the difference between collagen protein and collagen […]

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]]> Unlock the Benefits of MCT Oil in Coffee: Recipes and Tips https://www.bulletproof.com/diet-articles/mct-oil-coffee-benefits/ Mon, 11 Nov 2024 17:07:32 +0000 https://www.bulletproof.com/?p=900105640 Coffee is already a household name that helps people feel energetic and alert. But you’ll be jonesing for a cup when combined with MCT oil (medium-chain triglycerides). This healthy fat is the key to unlocking benefits, such as focus, energy and metabolic support. MCT oil in coffee provides a quick energy boost, increases coffee’s fat […]

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]]> Why Protein Coffee is the Perfect Morning Drink for Health Enthusiasts https://www.bulletproof.com/coffee-articles/protein-coffee/ Tue, 08 Oct 2024 18:18:58 +0000 https://www.bulletproof.com/?p=900105525 Move over, whipped coffee. A new coffee trend in town is winning over any average Joe. Protein coffee, or “proffee” as affectionately known, combines protein powder with coffee. Though it may sound like an odd combination, the benefits—weight loss, improved workout performance, increased energy—make it a match made in heaven. Here, we explore the benefits […]

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