As millennials begin to turn 40 in 2021, CNBC Make It has launched Middle-Aged Millennials, a series exploring how the oldest members of this generation have grown into adulthood amid the backdrop of the Great Recession and the Covid-19 pandemic, student loans, stagnant wages and rising costs of living.

Older millennials entered adulthood around the time of the 2008 financial crisis, which was followed by higher education funding cuts, rising college costs and slow wage growth. The result: Millennials became the student debt generation