Science Assures It's Fine to Have Fewer Friends in Your 30s

Social networks tend to follow predictable cycles throughout a person’s life, expanding in the 20s and shrinking in the 30s and beyond, a notion borne out by social-science research and popular trend pieces alike. Now, a new study takes this idea and fast-forwards several decades into the future, giving a hint about the long-term impact of this friendly ebb and flow.
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