For as long as intelligence has been studied, we’ve been told that our raw IQ is mostly a genetic hand-me-down. Sure, we've learned how to sharpen the knives we were handed and increase our “effective ...

There’s a common assumption that intelligence is largely determined by genetics. After all, previously published studies found that identical twins raised apart—who share nearly identical DNA—tend to ...

A rigorous nine-year research review looking at the relationship between fluoride and intelligence in children concludes that as fluoride levels rise, IQ drops. Every 1 part per million increase in ...

Adults living with idiopathic hypersomnia and narcolepsy type 1 often report cognitive difficulties, including problems with memory, attention, and mental fatigue. However, new research published in ...