There's been many articles published recently suggesting that IQ's in the west are dropping at an alarming rate. According to a study published by the University of Amsterdam, westerners have lost 14 IQ points on average since the Victorian
age.
NBC highlighted some of the potential reasons as mentioned below:
"it was suggested that average intelligence is being pulled down because lower-IQ families are having more children. Alternatively, widening immigration might be bringing less-intelligent newcomers to societies"
Previous research has also found that women of higher intelligence are having fewer children, meaning women of lower intelligence are driving population growth.
How can we counter the "Dumbening"

?
https://www.nbcnews.com/think/opinion/iq-rates-are-dropping-many-developed-countries-doesn-t-bode-ncna1008576https://www.dailysabah.com/science/2018/06/14/dramatic-drop-in-peoples-iq-levels-since-1975-study-reveals