Fewer offspring, longer life: The hidden rule of mammal aging

A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan increases by about 10 percent, though the reasons differ for males and females. Castrated males avoid the harmful effects of testosterone, while females gain longevity by sidestepping the intense physical demands of pregnancy and nursing. The results underscore a powerful biological trade-off between making offspring and staying alive longer.

  Updates   Jan 16, 2026   0   12  Add to Reading List
Fewer offspring, longer life: The hidden rule of mammal aging
Why the Hen Does Not Have Teeth Story Book

WHY THE HEN DOES NOT HAVE TEETH STORY BOOK

It’s an amazing story, composed out of imagination and rich with lessons. You’ll learn how to be morally upright, avoid immoral things, and understand how words can make or destroy peace and harmony.

Click the image to get your copy!

Why the Hen Does Not Have Teeth Story Book

WHY THE HEN DOES NOT HAVE TEETH STORY BOOK

It’s an amazing story, composed out of imagination and rich with lessons. You’ll learn how to be morally upright, avoid immoral things, and understand how words can make or destroy peace and harmony.

Click the image to get your copy!

Why the Hen Does Not Have Teeth Story Book

WHY THE HEN DOES NOT HAVE TEETH STORY BOOK

It’s an amazing story, composed out of imagination and rich with lessons. You’ll learn how to be morally upright, avoid immoral things, and understand how words can make or destroy peace and harmony.

Click the image to get your copy!

A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan increases by about 10 percent, though the reasons differ for males and females. Castrated males avoid the harmful effects of testosterone, while females gain longevity by sidestepping the intense physical demands of pregnancy and nursing. The results underscore a powerful biological trade-off between making offspring and staying alive longer.
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