A device is no miracle. Evidence decides.
For every technology we show how strong the evidence is, who it makes sense for, who should be careful and what to look for when buying.
Red light panels: what photobiomodulation can and cannot do
Red and near-infrared light has moved from clinics into living rooms. We explain how it works, which wavelengths and doses make sense, and where the research ends and the marketing begins.
LED face masks: what blue, red and near-infrared light can do
LED masks promise clearer, firmer skin without a trip to the clinic. We look at what research says about blue, red and near-infrared light, how to protect your eyes and what to realistically expect.
Grounding (earthing): what we know about going barefoot and grounding mats
Grounding promises less inflammation and better sleep. We explain where the hypothesis comes from, what small studies have shown, why being outdoors barefoot makes sense and how to use mats safely.
EMF at home: Wi-Fi, 5G, phones and power lines without the panic
Wi-Fi, 5G, a phone by the pillow or a power line behind the house can be worrying. We explain non-ionising radiation, how limits work, what large studies show and which cheap precautions make sense.
PEMF mats and devices: what pulsed electromagnetic fields can do
Pulsed electromagnetic fields are used in medicine, for instance for fractures that fail to heal. We explain where the evidence lies, how home mats differ, who should avoid them and what to expect.
Water technologies: what works and what is just marketing
Filters, reverse osmosis, hydrogen water and “structured” water – we explain which technologies are backed by research and which are expensive promises without evidence.
Finnish sauna vs infrared sauna: what the data show and how to use them sensibly
Finnish studies link frequent sauna bathing with better heart health, but these are observations, not proof of cause. We explain what heat does to the body, how infrared saunas differ and who should be careful.
Cold therapy: ice baths, cold showers and cryo chambers without the myths
Cold sharply raises noradrenaline, can lift mood and activate brown fat. It also carries real risks, and poorly timed it may blunt muscle growth. We explain what is supported and how to start safely.
Wearables: what watches, rings and sensors can really tell you
Watches, rings, chest straps and glucose sensors track heart rate, HRV, sleep and blood sugar. We explain which data are reliable, where devices get it wrong and how to use the numbers sensibly, without stress.
Blue-light glasses and evening light: what really helps your sleep
Light at night demonstrably suppresses melatonin and shifts the body clock. Blue-blocking glasses, however, have mixed evidence. We explain what works better – dim light in the evening, daylight in the morning – and when amber lenses may make sense.
Air purifiers at home: what they really filter and what they don’t
Indoor air is often more polluted than you would expect. We explain what a True HEPA filter and activated carbon can do, how to match output to room size, why a purifier does not lower CO₂ and which technologies are best avoided.
Home water filters: how to choose the right system
From filters on the main water inlet and under-sink systems to filter jugs. We explain why to start with a water analysis, what certifications mean and how to combine solutions sensibly.
Hyperbaric Oxygen Chamber: What HBOT Can Do and What It Cannot Yet
Breathing pure oxygen under increased pressure is a proven treatment for carbon monoxide poisoning and hard-to-heal wounds. Israeli studies from 2020 turned it into a longevity star. We explain how it works, what the data really showed, how soft chambers differ from medical ones, and what the risks are.
Biohacking & technology in the book NAVRHNUTÝ
LongevityThe Science of a Long and Healthy Life
16 pp.


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