The Better Half explores evidence that genetic females often show measurable biological advantages — from stronger immune responses to greater resilience — and explains how two X chromosomes influence survival across life stages.

Combining clinical experience with evolutionary and genetic research, the author draws on neonatal care, studies of aging, infectious-disease cases and comparative examples from nature to examine longevity, cancer resistance, sensory differences and more. The book also questions male-centric assumptions in medical research and prescription practices.

Accessible to general readers and informative for students or health professionals, the narrative connects genetics, medicine and evolution to reshape thinking about sex, health and public policy.

Topics covered

• Genetics of the X chromosome
• Clinical case studies and population evidence
• Implications for medicine, public health and research

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