Fragile X disorders include two distinct conditions: fragile X syndrome (the most common single-gene cause of developmental delay and autism) and an entirely separate group of premutation syndromes.

Antonella Favit-Van Pelt, MD, PhD, discusses the use of neuromodulation and neuroplasticity for addressing gait deficits in patients with multiple sclerosis.

A study suggests that a single brain MRI can be used to predict a person's rate of aging across their whole body, which researchers say could change how we predict and prevent chronic disease.