Scoops of liquid protein are showing up in energy drinks and lemonade at 7 Brew locations across Connecticut, while Starbucks baristas are pouring protein-boosted cold foam into grande cups. The trend driving it all, dubbed protein maxxing, has taken over social media feeds and is now reshaping what Connecticut residents order at the drive-thru.
A National Diet Trend Lands on Local Menus
Protein maxxing describes a diet and social-media trend built around maximizing protein intake for weight management, muscle building and metabolism, as reported by the Hartford Courant. Stanford Medicine describes it more bluntly as “the social media-fueled trend of maximizing dietary protein at every opportunity,” according to med.stanford.edu. The craze has pushed more protein products into restaurants, grocery stores and cafes, including Dunkin and Starbucks, per the Courant's reporting.
Manraj Parmar, who co-owns and operates eight 7 Brew locations across Connecticut and Massachusetts, has watched the demand firsthand. His shops now offer liquid protein that customers can mix into energy drinks, tea or lemonade, with each fluid ounce delivering 15 grams of protein. Parmar caps the protein serving at two scoops per drink, a built-in limit on just how far customers can push the trend in a single cup.
Starbucks Joins the Protein Push
Starbucks rolled out its own protein menu in September 2025, adding protein cold foam and protein lattes made with protein-boosted milk. Depending on the drink, a grande-sized order can add roughly 15 to 36 grams of protein on top of whatever else is in the cup. The additions reflect a broader shift flagged in federal nutrition guidance: the USDA Dietary Guidelines for Americans now recommend prioritizing protein foods at every meal, part of why protein marketing and additives feel inescapable right now, according to Pew Research Center.
That guidance also raised the bar on how much protein adults should eat. The general recommendation climbed from 0.8 grams per kilogram of body weight per day to a range of 1.2 to 1.6 grams per kilogram for most adults, a jump the Cleveland Clinic ties directly to the 2025-2030 Dietary Guidelines for Americans. Pew's survey found the appetite for supplementing that intake skews young: 37% of adults ages 18 to 29 and 35% of adults ages 30 to 49 say they take protein supplements, compared with a smaller share of older adults.
Yale and Hartford HealthCare Dietitians Urge Caution
Danielle Sanders, a registered dietitian at Yale New Haven Health and a lecturer in internal medicine at Yale School of Medicine, told the Courant that protein is important but that the focus on it can go too far. She noted that most Americans already consume an adequate amount of protein, and she encourages eating foods that pair protein with fiber, including whole grains, beans and legumes. Sanders also pointed out that weight-loss medications can increase muscle loss, which raises the demand for protein in some patients, and that people with chronic kidney disease face particular risk from excessive protein intake. Her advice: consult a dietitian for guidance tailored to an individual's needs.
Nikki Santillo, a registered dietitian at Middlesex Health Surgical Alliance, echoed the concern about kidneys, noting that people with kidney disease should avoid excess protein because protein breakdown products are filtered through the kidneys. She recommends resistance training alongside protein intake to help preserve muscle during weight loss, and she stresses maintaining carbohydrates, fiber and a variety of foods rather than fixating on protein alone. Christopher Barrett, a registered dietitian and nutritionist at Hartford HealthCare, told the Courant that protein maxxing can help with weight loss and increase body mass, but only when it's combined with resistance training.
Why Protein Alone Won't Build Muscle
The resistance-training caveat isn't unique to Connecticut's experts. The American Medical Association makes the same point nationally: “If you want to increase muscle mass, you need to be doing resistance training along with the protein intake,” according to ama-assn.org. The AMA also notes that most people are already getting an appropriate amount of protein, even if its quality varies. Colorado State University's health sciences program explains the appeal of protein beyond muscle-building, noting that it takes more energy and time to digest than carbohydrates, which gives the metabolism a temporary boost and helps people feel fuller for longer, per chhs.colostate.edu.
Lisa Lynn, a metabolic nutrition and weight loss expert who owns LynFit Nutrition and spent nearly 20 years as Martha Stewart's personal trainer, has worked in nutrition for 37 years. She describes protein maxxing as microdosing protein and warns that doing it improperly can overload the kidneys. Lynn identifies whey protein as the most efficient protein source, but she also cautions that social media is full of misinformation about nutrition, a theme that runs through much of the expert pushback on the trend.
The Trade-Offs: Fiber, Fat and Kidney Strain
Protein isn't the only variable that matters, and not all protein sources are created equal. They vary in fat and other nutrient content, and protein-rich foods can carry dietary fat and saturated fat that may affect cholesterol and cardiovascular health, according to the Courant's reporting. By comparison, a four-ounce broiled sirloin steak provides about 33 grams of protein alongside 5 grams of saturated fat, while a cup of cooked lentils delivers roughly 18 grams of protein and 15 grams of fiber with virtually no saturated fat, per the Harvard T.H. Chan School of Public Health.
That fiber gap is a recurring warning from nutrition researchers. The Cleveland Clinic cautions that protein-heavy diets can displace fiber, vitamins and other nutrients when they crowd out plant-based foods, and that high-protein eating can contribute to constipation for the same reason, according to health.clevelandclinic.org. Protein still carries calories of its own, about 4 per gram, meaning it can contribute to weight gain if it pushes total intake above what a person needs. The outlet also warns that regularly eating excessive protein can stress or even damage the kidneys when intake outpaces the body's needs, and the American Medical Association adds that high-protein diets simply are not universally good for everyone.
Fiber intake has research-supported benefits at 25 to 30 grams per day, according to the Courant, a target that nutrition researchers say is easy to miss when a diet tilts too heavily toward protein. Johns Hopkins' Center for a Livable Future expects high protein consumption to remain the dominant food trend through 2026, shaping supermarket aisles and restaurant menus with protein-fortified and protein-alternative products, even as a counter-trend toward fiber maxxing emerges, per clf.jhsph.edu.
There is also emerging research on who may genuinely need more protein. A small study of 40 adults with obesity, 23 of whom were prescribed semaglutide while 17 followed a diet and lifestyle program, found that older age, being female and eating less protein were all linked to greater muscle loss, according to the Endocrine Society. For Connecticut's dietitians, that kind of nuance is the point: protein matters, but it works best alongside fiber, resistance training and a plan built around an individual's actual needs rather than a social-media scoop count.
