Harvard

This shows stem cells

How stress causes gray hair

Study reveals a link between the nervous system and stem cells that regenerate pigment in hair follicles. When stressed, norepinephrine from the sympathetic nervous system causes melanocyte stem cells to activate excessively. The stem cells all convert into pigment-producing cells, prematurely depleting the reservoir. The findings explain the cellular and molecular links between stress and premature hair graying.... Read More...
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Number of years in NFL plus certain positions portend greater risk for cognitive and mental health problems

Longer career length and playing specific positions put NFL players at greater risk of developing cognitive problems and mental health issues. Playing for 10 or more seasons increased the risks for depression, anxiety, and cognitive impairment twice as much than those who played for a single season. For every five seasons of play, the risks increase 20% for cognitive impairment. Those most at risk are running backs, linebackers and those who played special teams positions. ... Read More...
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Decoding touch: Potential therapy for abnormal touch sensitivity in autism spectrum disorders

Isoguavacine, an old experimental compound which exclusively targets peripheral neurons, mitigates abnormal touch sensitivity in mouse models of ASD. The compound also improved body mass, reduces anxiety, and in one genetic subset of mice, prevented the development of brain abnormalities that arise from altered touch response.... Read More...