Recent research about ways to boost brain power shows different results:

1. Stimulants:

   • Medications for Attention Deficit Hyperactivity Disorder (ADHD), like methylphenidate, help people focus better. Studies show that these medications can improve task performance by 15-20% in healthy adults.
   • When looking at many studies together, the results showed a medium effect for some tasks.

2. Nootropics:

   • Some substances, known as nootropics, like Piracetam, show small benefits. Studies found that they can help memory tasks by about 10%.
   • However, when researchers reviewed 24 studies, they found that many popular nootropics didn’t really work well—67% of them were ineffective.

3. Dietary Supplements:

   • Omega-3 fatty acids, often found in fish oil, seem to help with brain function. They can improve thinking skills by about 0.25 standard deviations for older adults.

Overall, while some ways to enhance brain power look promising, there are still many differences in results. This means we should be careful when believing strong claims about these products.