Articles by Mary Milstead
Lead in Protein Powder: A GNC Dietitian’s Hot Take
Mary Milstead MS, RD, LDN, a dietitian, explains the Consumer Reports lead in protein powder article, how to know if your protein powder is safe, and protein powder testing.
The GNC Protein Difference: Quality, Purity, & Results You Can Trust
Learn why you can trust GNC for protein supplements, protein powders, and shakes. Read our dedication to high-quality standards and ingredients, third-party testing, and clinical results.
Ultimate Guide to Choosing a Multivitamin
Learn what to consider when buying a multivitamin from dietician Mary Milstead: who benefits, dosing, quality and more tips for making the best choice.
Best Supplements for Women’s Health of 2024
Mary Milstead recommends the best supplements for women! Find her top picks for best multivitamin, best menopause supplements, collagen and more!
Best Supplements for Men Over 50
Mary Milstead MS, RD, LDN reviews the best supplements for men over 50. Read about Mary's picks for best testosterone, best multivitamin, protein and many more top categories!
Healthy Habits After Weight Loss Medications
Read about stopping a semaglutide and what to expect. GNC's Mary Milstead educates on the side effects and healthy habits to support your health.
Best Magnesium Supplements of 2025
GNC's Mary Milstead MS, RD, LDN reviews the best magnesium supplements of 2025. Read Mary's picks for best magnesium liquid, best magnesium powder, best pill and many others!
Whey Protein: What You Should Know
GNC's Mary Milstead MS, RD, LDN discusses the types of whey protein powder, how much you should have, and the benefits and considerations. Learn and compare the three types of whey protein powders.
Healthy Habits While on Ozempic or Semaglutide Medications
GNC's Mary Milstead MS, RD, LDN discusses what semaglutide is, unwanted side effects, and ways to ease potential concerns through diet, exercise, and dietary supplements.
The Benefits of Berberine: According To A Dietitian
Does berberine help with blood sugar levels, weight loss, and blood lipids? GNC dietitian, Mary Milstead, digs into the research behind this popular ingredient.
GlucaTrim – A Q&A Sesh With The Product Formulator
Discover GNC's weight loss supplements, Total Lean GlucaTrim & GlucaStim, with formulator Dr. Lauren Green. Learn about GlucaTrim & Glucatrim's ingredients, answers to common questions, and more!
Best Protein Powders of 2026: Dietitian Vetted
Read GNC's Mary Milstead MS, RD, LDN's updated best protein powders of 2026! Find the best clear protein, whey protein, weight loss support protein, plus many other top categories!
Best Mass Gainers of 2025: Top 7 For Bulking Up
Putting on muscle? Mary Milstead, a registered dietitian, again shares her best mass gainers of 2025. See her picks for best beginner, highest protein and vegan!
Cookies and Cream Flavored Protein Dip
Learn how to make a delicious and protein-packed dip using GNC Pro Performance 100% Whey Protein Powder Galactic Cookies & Cream flavor.
Kickstart Your Weight Loss Journey with Two Powerhouse Products
Dietitian Mary Milstead discusses using GNC's Total Lean Lean Shake 25, a meal replacement shake, and BodyDynamix Slimvance XP, a fat burner, together to help lose weight.
Berry Lemonade Pre-Workout Slushie
Enjoy this refreshing pre-workout slushie recipe featuring GNC AMP Tri-Phase, a multi-action pre-workout, proven to enhance performance.
Protein Cake Pops
These delicious cake pops are loaded with extra protein, featuring birthday cake-flavored protein powder inspired by Marvel's Captain America.
Birthday Cake Flavored Protein Pancakes
Get ready to whip up something truly super in the kitchen with this twist on the classic pancake, featuring a Captain America-themed protein powder.
Best Amino Acid Supplements of 2025
GNC's Mary Milstead, MS, RD, LDN shares her updated list of the best amino acid supplements of 2025! Read more to find out which products made this year's list!
Strawberry Lemonade Protein Recipe
Learn how to make a more nutritious version of strawberry lemonade using fresh fruit and a protein powder that has zero added sugar.