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Why Some People With Disease-Causing Gene Mutations Never Get Sick

Aug 21, 2026

New research shows that many people with disease-causing gene mutations never develop illness, challenging traditional assumptions. Studies of 'modifier genes' and genetic outliers are revealing how some individuals stay healthy, potentially leading to new treatments for genetic diseases.

Vitamin D Shows Mixed Results for Brain Health and COVID Recovery in New Studies

Apr 02, 2026

A 16-year study links higher vitamin D levels in middle age to lower tau protein deposits in the brain, while a major COVID-19 trial finds vitamin D doesn't reduce acute severity but may help with long COVID recovery. Separate research shows supplementation improves vitamin D levels and stabilizes immune profiles in athletes and non-athletes.