Wellness Tools & Devices
Honest, evidence-based guides to wellness devices, from red light therapy to air purifiers.
FeaturedDoes Grounding (Earthing) Work? What the Evidence Actually Shows
29 guides in Wellness Tools & Picks
Wellness ToolsDoes Grounding (Earthing) Work? What the Evidence Actually Shows
Grounding mats are marketed on plausible biology, but independent evidence is thin. What the small studies actually show, and what they don't.
Light TherapyDo Blue Light Glasses Work? What the Cochrane Review Found
A 2023 Cochrane review of 17 trials found blue light glasses probably don't cut eye strain, and a 2025 meta analysis found no clear sleep benefit either.
Light TherapyRed Light Therapy for Weight Loss: Reading the Fine Print
The weight loss claim rests on a regulatory misreading. The FDA category is for body contouring, not weight loss — and the difference is the whole story.
Light TherapyLight Therapy for Depression: It Is Not Red Light
Light therapy has genuine evidence for seasonal and non seasonal depression — at 10,000 lux of white light. Red light therapy is a different thing entirely.
Light TherapyRed Light Therapy for Pain and Arthritis: The Real Numbers
Knee osteoarthritis, rheumatoid arthritis and neck pain each have pooled evidence — with very different strength. Here are the effect sizes.
Light TherapyRed Light Therapy for Hair Growth and Hair Loss
Pattern hair loss is the one consumer use with expert panel backing and a sham controlled trial. Here are the numbers, the limits and the device rules.
Light TherapyRed Light Therapy Panels, Lamps and Machines Compared
Panel, lamp, machine or bed — the formats differ in coverage and distance, not in physics. Here is how to read a spec sheet without being sold to.
Light TherapyHow Often Should You Use Red Light Therapy?
Session frequency for red light therapy at home, taken from the protocols trials actually used — plus why doubling up makes results worse, not better.
Light TherapyRed Light Therapy Masks: Benefits, Limits and Regulation
What a red light therapy mask can realistically do, what FDA clearance actually certifies, and where the format helps more than a panel would.
Light TherapyBest Red Light Therapy Mask: What Holds Up to Checking
Most best mask lists repeat brand claims. This one checks each device against the FDA clearance database and says what could not be verified.
Light TherapyWho Should Not Use Red Light Therapy
Most red light therapy contraindication lists are copied and unsourced. Here is what is actually documented, what is precautionary, and what is neither.
Light TherapyRed Light Therapy Side Effects and Real Dangers
Most red light therapy side effects are mild. The documented dangers are narrower and stranger than the internet suggests — here is what is on record.
About Wellness Tools
In this section you'll find honest, evidence-first guides to wellness devices. We focus on what works, where the evidence is thin, and how to use these tools safely. Start with the guides below, which are interlinked so you can move from the science to device selection.
This category looks at the devices and tools people use to support their health, with a focus on what the research really shows. That includes red light therapy (photobiomodulation) — how it works, what it genuinely helps with, and how at-home devices compare to clinical ones — and air purifiers, including the CADR/room-size math, what HEPA filtration can and can't do, and honest reviews of specific models. The aim is straight talk, not hype.