In brief
  • A Texas A&M team tested 10 grams of creatine monohydrate daily for 12 weeks in 64 adults ages 45 to 65
  • Adults who did not train still added lean tissue and strength, while training plus creatine added more strength and trimmed fat share
  • Aerobic capacity did not improve further with creatine, and the design limits comparisons between training choices

Researchers at Texas A and M University published a 12 week randomized trial on August 11 testing 10 grams of daily creatine monohydrate against placebo in 64 healthy adults ages 45 to 65, with and without training and modest dieting. People who took creatine without joining training added around 2.4 pounds of lean tissue and lifted more.

Participants first chose whether to enter a structured exercise and diet induced weight loss program or stay in the non-exercise group. Each group was then randomly assigned to receive creatine or placebo. The exercise program included resistance training plus aerobic training three times a week, while exercisers followed a diet meant to create a modest calorie deficit.

In people who did not train, creatine lifted leg press strength and bench press strength over 12 weeks. In the training and diet group, those using creatine added nearly three pounds of lean tissue while lowering fat mass. In comparison, the training and diet group using placebo showed little change in lean tissue.

Adding creatine to exercise also led to larger gains in leg and bench press strength and time to exhaustion. It gave no extra benefit for aerobic capacity in this study. Those taking creatine had a larger reduction in body fat percentage than exercise and diet alone, which the researchers describe as the first such finding for creatine combined with exercise and diet induced weight loss.

For readers in midlife, the setting is preservation. Muscle and strength often decline with age and during weight loss, and holding lean tissue keeps everyday movement easier to maintain. A powder that supports lean tissue without a formal program sounds straightforward, yet training still counted here toward stronger gains.

There are limits to watch. Since people chose the exercise path before randomization, contrasts between exercisers and nonexercisers are less solid than creatine versus placebo. One 12 week study followed 64 people who finished it. It leaves out long term outcomes, results beyond ages 45 to 65, and the cognitive and health marker outcomes named in the paper title.

Dosing and background habits also call for care. The trial looked at 10 grams each day, not a range of doses. Diet intake, protein intake and daily activity in the nonexercise group could have shaped the results. A 2025 review of 685 clinical trials from the same research group found no clear gap in reported side effect rates for creatine and placebo. The current trial was led by Dr. Richard Kreider, professor and director of the Exercise and Sport Nutrition Lab at Texas A and M, and funded by the WoodNext Foundation through the Texas A and M Foundation.

For now, take this as a narrow result rather than a routine. Creatine supported lean tissue and strength in this group, helped more with training and dieting, and left aerobic capacity unchanged.

Written by

Kristina Patel

Kristina produces the interviews at Root to Bottle: the research, the question lists, the follow-ups. She grew up on her grandmother's turmeric milk and still asks every founder where their plant was grown and who taught them to use it.

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