Key risk factors for Alzheimer’s Disease are linked to cognitive function as early as ages 24–44, highlighting the need for early prevention in the US.

https://www.thelancet.com/journals/lanam/article/PIIS2667-193X(25)00097-3/fulltext

Creatine is a compound that comes from three amino acids. Creatine is found mostly in your body's muscles as well as in the brain. Most people get creatine through seafood and red meat — though at levels far below those found in synthetically made creatine supplements. The body's liver, pancreas and kidneys also can make about 1 gram of creatine per day.

Your body stores creatine as phosphocreatine primarily in your muscles, where it's used for energy. As a result ...