I read through 72,000+ studies on creatine and pulled out the top 10 effects you've never heard of (THREAD):
1. the older you are, the more it sharpens your memory
A 2023 meta-analysis found creatine measurably improves memory in healthy people, and the effect was strongest in adults 66 to 76.
Your brain runs on the same energy system as your muscles, and 5g a day tops up the tank.
2. it rescues a sleep-deprived brain
In a 2024 study, a single high dose of creatine improved thinking and memory in people kept awake for 21 hours.
It refilled the brain's energy stores (ATP) during the exact window when sleep loss drains them.
3. it makes antidepressants work better in women
A 2012 trial added 5g of creatine to an SSRI in women with depression.
The creatine group responded about twice as often as placebo, and faster.
4. it protects bone in older women
A 12-month trial in postmenopausal women combined creatine with resistance training and preserved bone density at the hip, a spot where fractures turn deadly.
The training built the muscle, the creatine helped hold the bone.
5. vegetarians get the biggest brain boost
Meat is the main dietary source of creatine, so vegetarians run low.
A 2003 study gave them 5g a day and their working memory and intelligence scores jumped. The less you eat from food, the more the supplement does.
6. it supports women through menopause
Women carry lower creatine stores than men and they drop further with menopause.
The research points to benefits for strength, mood, and bone when training is paired with daily creatine through that transition.
7. it helps the brain recover after head trauma
A pilot study gave kids and teens with traumatic brain injury creatine for 6 months.
The treated group had less amnesia, shorter ICU stays, and better recovery in cognition and behavior. It feeds the damaged brain the energy it needs to heal.
8. it kills mental fatigue on hard thinking days
In a study on healthy adults, creatine cut mental fatigue during demanding mental math and boosted oxygen use in the brain. When your head is working overtime, it keeps the energy flowing.
9. it saves muscle when you can't train
In a trial where one leg was casted for 2 weeks, the people taking creatine lost less muscle and strength, then rebuilt it faster in rehab.
If you're ever injured or stuck in bed, it protects what you'd otherwise lose.
10. it helps control blood sugar
In a 12-week trial, type 2 diabetics who paired creatine with exercise dropped their HbA1c (3-month blood sugar average) more than exercise alone, and had lower glucose spikes after meals.
Creatine helps muscle pull sugar out of the blood.
This is my read of the research and my own experience, not medical advice. Creatine is well studied and safe for most people, but if you have kidney issues or take medication, talk to your doctor before starting.
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