Articles by Rachel Kreider
Why are Prices of Some of My Products Increasing? Insights from a GNC Science Expert
Rachel Kreider, MPH, RD explains why the prices of whey protein-based products and others are going up in 2025. Learn more about related factors contributing to the trend.
Vanilla Berry Multivitamin Smoothie Recipe
GNC's Rachel Kreider shares her easy Vanilla Berry Multivitamin Smoothie recipe. Learn how to make this nutritious multivitamin powder drink instead of swallowing a pill!
Sleepy Girl Mocktail Recipe
A busy mom of three, GNC's Rachel Kreider shares her take on the TikTok viral bedtime beverage recipe. Learn about the science behind this mocktail drink.
Sigh Your Way to a Positive Attitude
Harness the power of your breath to support mood and decreased stress levels! Learn about the results of a scientific study on the benefits of sighing from the experts at GNC!
Strawberry Balsamic Shake Up
A NY inspired tasty mocktail! This drink has a balsamic vinegar reduction combined with fresh fruit, herbs, and a lemon simple syrup.
5 Tips to Stick to a Healthy Routine
Starting a healthy routine can be challenging. Here are five tips from the Experts at GNC to help you get on track and stay on track.
Probiotics and Prebiotics: What’s The Difference?
Read to learn the difference between prebiotics and probiotics! Taking the right probiotic and prebiotic supplements can help support your digestive and gut health.
What Is Vitamin C And What Benefits Does It Provide?
What is vitamin C and are you getting enough? Find out how vitamin c fits into your healthy lifestyle. Learn the benefit of taking vitamin c for overall health and performance.
Types of Amino Acids
Learn a bit more about the huge role that amino acids play in health and wellness. Get your answers about the types of amino acids.
Calcium 101: What Is It And How Can You Get Enough?
Learn what calcium is, how much you need, when to take calcium, and more! The body needs lots of calcium to support healthy bones and proper function within cells.
Fresh Mint Shamrock Smoothie
GNC has been feeling lucky and has re-created a certain famous mint milkshake with less than half the calories, carbs, sugar and fat plus 17g of high-quality protein! Try and let us know what you think!
Vitamin D Deficiency—How Can You Tell If You Have One?
Do you have a vitamin D deficiency? Learn how Vitamin D impacts nearly every body system, signs of not getting enough vitamin D, tests, and vitamin D supplements.
10 High Protein Vegan Foods
Check out GNC's list of the 10 best vegan protein sources to help meet your daily protein needs. Spice up meatless Mondays with options from Tempe to Seitan!
Macronutrients vs. Micronutrients
Understanding the difference between macronutrients and micronutrients is a great place to start making improvements to your diet. Learn how!
High Protein Foods For Every Diet
GNC's Rachel Kreider, MPH, RD, gives 20 high protein sources or foods to add to the cart on your next shopping trip. Find protein options from both meat and vegitable sources!
Vitamins vs Minerals—What’s The Difference?
Learn about the differences between vitamins and minerals. Both can benefit your healthy lifestyle and learn which are best for you!
Magnesium: Under The Microscope
Learn the benefits of magnesium, and how this important this mineral is for health and wellness. Find out sources of magnesium, how much to take, and more!
What To Eat Before A Workout
Learn about what to eat before you workout in order to get the most energy possible. Getting the right fuel for your muscles and overall recovery is key!
Why You Shouldn’t Resist Buying A Resistance Band
Resistance bands are an incredibly versatile piece of fitness equipment. Check out the different types and why you should consider them for an at-home fitness tool.
Pre-Workouts—What Are They And What Do They Do?
Here’s a quick rundown on some popular pre-workout supplements. Learn what they are and what they do. Read more now!