Researchers found that lower initial levels of Coprococcus spp. bacteria in individuals with mild cognitive impairment were associated with faster memory and thinking skills decline over a one-year follow-up period.

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A 2025 review of 685 clinical trials led by Texas A&M researcher Dr. Richard Kreider found no significant difference in reported side-effect rates between individuals taking creatine and those receiving a placebo.

UCLA Health dietitian Yasi Ansari advises consumers purchasing creatine to select third-party-tested creatine monohydrate bearing certification seals such as 'NSF for sport' or 'Informed Sport' and avoid proprietary blends.

Tracy Zaslow considers long-term creatine use safe for healthy adults, but advises against it for people under 18, pregnant or nursing women, individuals with kidney or liver disease, those taking stimulants, or people with bipolar disorder.

Creatine draws water into muscle cells to maintain volume and support contractions, aiding exercise performance and post-workout muscle recovery.

Creatine is a natural compound produced in the human liver, kidneys, and pancreas from the amino acids arginine, glycine, and methionine, with approximately 95% of total body creatine stored in skeletal muscle.

Nurse and fitness trainer Michelle Nouraei recommends creatine for perimenopausal and menopausal women to combat accelerated muscle loss from declining estrogen levels and to help manage fatigue, foggy memory, and mood symptoms.

The recommended daily adult dosage of creatine is three to five grams, though Michelle Nouraei suggests starting at three grams daily and increasing incrementally by one gram weekly to avoid gastrointestinal side effects like bloating and nausea.

Creatine helps skeletal muscles regenerate adenosine triphosphate for energy, supporting quick-burst power during short-duration, explosive exercise like weight lifting, jumping, and sprinting.

In the Texas A&M study, adults who combined exercise, a calorie-deficit diet, and 10 grams of daily creatine gained nearly three pounds of lean tissue while simultaneously losing body fat mass over 12 weeks.

In a 12-week Texas A&M University study, adults ages 45 to 65 taking 10 grams of creatine daily without structured exercise gained roughly 2.4 pounds of lean tissue and increased leg press and bench press strength.

A 12-week study from Texas A&M University found that creatine primarily supports muscular strength and power rather than aerobic fitness, showing no additional improvement in aerobic capacity beyond exercise alone.

Texas A&M researcher Dr. Richard Kreider noted that obtaining 10 grams of daily creatine from food alone requires consuming five to 10 pounds of meat or fish daily, making dietary supplements a more practical option.

Creatine is naturally present in foods like red meat, fish, seafood, and poultry, containing approximately one to two grams of creatine per pound in red meat and salmon.

Cedars-Sinai sports medicine specialist Tracy Zaslow states that creatine helps middle-aged and older adults counteract age-related muscle loss and, when combined with resistance training, increases bone mineral content to help prevent osteopenia and osteoporosis.

Participants in the Texas A&M study who combined 10 grams of daily creatine with regular resistance and aerobic exercise achieved greater gains in leg press strength, bench press strength, and time to exhaustion than those exercising with a placebo.

The Texas A&M study is the first to demonstrate that adding creatine to an exercise and diet-induced weight-loss program yields a greater reduction in body fat percentage than diet and exercise alone.

A 12-week study published in the Journal of the International Society of Sports Nutrition evaluated 64 healthy adults ages 45 to 65 taking 10 grams of creatine monohydrate daily versus a placebo.

Interruption of maternal-infant microbe sharing caused by C-section delivery can be restored postnatally through breastfeeding and a prebiotic-rich infant diet, according to lead author Noel T. Mueller.

For non-breastfed infants, formula alternatives containing human milk oligosaccharides and prudent antibiotic use can help preserve and support the infant microbiome.

Certain species within the bacterial genera Bacteroides and Bifidobacterium help break down human milk oligosaccharides, which are specialized carbohydrates present in human breast milk.