We said no

40 Hz gamma sensory stimulation

Save your money on 40 Hz flicker gadgets. They were built for dementia patients.

Focus · Device · members

EEG neurofeedback for ADHD

Skip the neurofeedback course. Hide who got it and the benefit disappears.

Focus · Device · members

Transcutaneous auricular vagus nerve stimulation

Skip the vagus ear clip. It doesn't move your heart rate variability.

Calm · Device · members

DIY transcranial electrical stimulation rigs and self-adm…

Don't build the 9V rig. Buy a constant-current box or leave your head alone.

Focus · Device · members

tACS and tRNS

Don't buy the brain zapper. Healthy adults got nothing out of it.

Focus · Device · members

tDCS for exercise performance

Don't buy the brain-stimulation headset. It doesn't move your times.

Strength · Device · members

tDCS for major depressive disorder

Don't bolt a tDCS headset onto your SSRI. It adds nothing.

Calm · Device · members

Anodal tDCS over dorsolateral prefrontal cortex

Don't buy a brain stimulator. It won't make you sharper.

Focus · Device · members

GI-MAP and similar commercial stool panels

Don't buy the GI-MAP. Finding a microbe's DNA in you isn't a diagnosis.

Gut · Supplement · members

Consumer gut-microbiome sequencing

Skip the gut test. One stool sent to seven labs comes back as seven different men.

Gut · Supplement · members

SIBO breath testing

Skip the SIBO breath test. It reads how fast your lunch moves.

Gut · Device · members

Intestinal permeability testing

Don't buy a leaky-gut test. No panel on the market measures your gut lining.

Gut · Device · members