substances

"Normally, microglia are looking for things like viruses or injury and secreting substances that block off the damage," she said.

The DEA also suspended the controlled substances license of Dr. Scott William Smith, Mark’s doctor, who became licensed to prescribe ketamine in 48 states under the relaxation of the telehealth regulations during the pandemic.

Cruchaga also is investigating the potential of metabolites -- substances released by cells when breaking down other compounds as part of their routine processes that are also found in CSF.

Choosing to consume substances even when they interfere with fulfilling responsibilities is one of the signs of substance use disorder, identified by the American Psychiatric Association.

Selenoproteins are crucial for several biological functions, including the breakdown of harmful substances, immune system support, and regulating metabolic processes.