A Texas A&M University study published in August 2026 reveals that adults aged 45 to 65 who took 10 grams of daily creatine gained lean tissue and strength over 12 weeks even without structured exercise, while those combining the supplement with workouts achieved greater muscle gains.
What a 12-Week Trial of 64 Adults Discovered Beyond the Gym
Creatine has long held a reputation as a staple for athletes and gym-goers chasing performance gains. New research from Texas A&M University challenges that narrow view by demonstrating its physiological effects in middle-aged adults who skipped resistance training entirely. In a trial published in the Journal of the International Society of Sports Nutrition, 64 healthy participants aged 45 to 65 completed a 12-week intervention testing daily high-dose supplementation against a placebo.
Among participants who chose not to join an exercise program, those taking 10 grams of creatine monohydrate daily gained roughly 2.4 pounds of lean tissue over the study period. They also improved their performance on leg press and bench press strength tests compared to the placebo group. The findings suggest that the compound’s cellular energy support operates independently of active weight training.
Combining Creatine With Diet and Exercise During Weight Loss
While sedentary participants saw measurable shifts, volunteers who combined the supplement with an active lifestyle experienced more pronounced changes. Participants in the exercise arm followed a diet designed to create a modest calorie deficit alongside resistance and aerobic training three times a week.
After 12 weeks, exercisers taking the supplement added nearly three pounds of lean tissue while reducing their fat mass. A placebo group following the identical diet and exercise regimen showed little change in lean tissue. Furthermore, the creatine group achieved a greater reduction in body fat percentage, marking what researchers describe as the first study to show that adding creatine to an exercise and diet-induced weight-loss program can reduce body fat percentage more than diet and exercise alone.
How the Supplement Affects Muscle
The compound naturally helps replenish cellular energy, which supports rapid energy production in cells.
At the same time, actual performance metrics improved: participants who paired the supplement with workouts registered greater gains in leg press and bench press strength, along with extended time to exhaustion. Aerobic capacity, however, showed no significant boost from the compound alone, aligning with its known role in supporting muscular power rather than endurance fitness.
Decades of Safety Data and Practical Dietary Realities
The human body produces creatine naturally, and individuals also consume it through foods like meat and fish. According to Dr. Richard Kreider, professor and director of the Exercise and Sport Nutrition Lab at Texas A&M and the study’s principal investigator, diet alone rarely supplies enough to match experimental dosages. Reaching a daily intake of 10 grams would require eating about five to 10 pounds of meat or fish each day, making daily supplementation a far more practical and economical approach.
Kreider has studied the compound for more than 30 years.