Blog · Evidence-Based Biohacking

Evidence-based articles on biohacking, AI research and substances — anchored in real scientific studies.

96 articles
Sleep11 min

GABA Supplements: Effects & Evidence — what’s actually proven

GABA supplements show limited, not consistently reproducible evidence across randomized trials, depending on the target domain. For sleep, stress, or cognition, benefits appear in some studies but not clearly in others. Sleep, exercise, light exposure, and stress-management strategies remain central. Overall, the data on dosing and safety are limited.

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Performance14 min

Training intensity: effects & evidence—what is actually supported

Training intensity measurably affects performance capacity, fat mass, and cardiovascular health—especially when higher intensities are combined with sufficient volume. Evidence is strong for endurance and mixed for strength/muscle retention. Results generally reflect group averages; individual responses vary. There is no universal “best” intensity.

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Performance12 min

Maximal strength: effects & state of evidence — what’s supported and what isn’t

Maximal strength is trained primarily through progressive resistance exercise; in RCTs and meta-analyses, the outcome measures and effects are generally quantifiable. For add-on methods (e.g., supplements, recovery aids), the evidence is often weaker or depends strongly on context and study conditions. Here, we separate evidence from speculation—briefly and grounded in studies.

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Performance12 min

EAAs & BCAAs: effects, evidence, and what’s actually proven

EAAs (complete essential amino acids) and BCAAs (leucine, isoleucine, valine) can support muscle protein synthesis and recovery—especially when dietary protein intake is insufficient. For sports performance, effects are variable and highly context-dependent. The evidence base is heterogeneous; safety is usually unremarkable at typical amounts, but data on long-term outcomes are limited.

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Recovery10 min

Pneumatic Recovery (NormaTec): Effect and Evidence in Detail

Pneumatic Recovery (NormaTec) can improve some people’s perceived recovery after exertion. The evidence base mainly includes RCTs on athletic performance and recovery, but device protocols vary substantially. Clear statements about long-term effects and safety are often limited by inconsistent study design and insufficiently robust effect sizes.

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Mind14 min

SAMe (S-Adenosylmethionine): Effects & Evidence Base — an evidence-based view

SAMe is most often studied for depression and, to some extent, for osteoarthritis. Systematic reviews and meta-analyses generally report favorable effects, but the overall data quality varies. For other “CNS/health” claims, evidence is thinner. Safety: possible side effects; relevant caution with depression and medication interactions; prioritize lifestyle levers first.

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Mind12 min

Alcohol: Effects & Evidence – what meta-analyses really say

The evidence base on alcohol is clear: for treating alcohol use disorders, multiple meta-analyses exist for medications such as naltrexone, acamprosate, nalmefene, baclofen, and topiramate. For health effects of alcohol outside addiction treatment, the evidence is heterogeneous. Lifestyle levers (sleep, movement, stress management, substitution/structure) are often the first step before supplements.

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Recovery12 min

Sauna for Recovery: Effects & Evidence Base — what is actually supported

Sauna can affect blood pressure and circulation markers in the short term, and for people with cardiovascular disease it may be safer than uncontrolled heat exposure, but the data is strongest for specific endpoints. For “recovery” in the sense of sports performance/fitness improvement, effects are sometimes indirect and the methods across studies vary.

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Substances10 min

Semaglutide: Effects and Evidence—What’s Proven and What Isn’t

Semaglutide is well supported for weight loss in people with obesity/overweight, with multiple meta-analyses and systematic reviews. For safety, current pooled analyses exist, but side effects depend on both dose and the individual patient. Meta-data from RCTs also covers cardiovascular effects, though the details vary by population and endpoint.

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Mind14 min

Yoga: Effects & Evidence – What’s proven and what isn’t

In studies, yoga shows benefits mainly for stress and stress-related markers, as well as certain pain and osteoarthritis outcomes. For sleep and cardiovascular parameters, the evidence is promising but sometimes based on small or narrowly designed studies. Methodologically, the data are heterogeneous: study formats, duration, and primary endpoints differ substantially.

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Substances10 min

Tirzepatide: Effects & evidence status — what’s proven and what’s missing

Tirzepatide has shown effectiveness in multiple randomized trials (RCTs) for the treatment of type 2 diabetes and for weight reduction; effects are dose-dependent and comparatively well quantified. However, data on long-term outcomes outside clearly defined indications are limited, and safety considerations require careful risk–benefit assessment with medical supervision.

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Recovery13 min

Recovery Nutrition: Effects & Evidence (what’s actually supported)

Recovery Nutrition likely helps mainly through timing and appropriate macronutrients after exercise (e.g., protein for muscle protein synthesis, carbohydrates for glycogen replenishment), while many “extra” claims are only weakly supported. The strongest evidence comes from RCTs and meta-analyses on protein and carbohydrates—especially when combined with adequate overall energy balance and sleep.

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Cognition13 min

Nootropic Stacks: Effects & Evidence — What Is Actually Supported

Nootropic Stacks are often blends without robust validation data. For individual ingredients, there may be RCTs depending on the substance, but high-quality studies for the “stack” combinations are usually missing. Prioritize sleep, movement, light, and nutrition; supplements can complement, but only when the target effect is supported and safety information is clear.

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Sleep10 min

Sleep Tracking: What Studies Show—and What They Don’t—Evidence-Based

Sleep tracking can help you understand sleep patterns, but accuracy for individual parameters on consumer devices is limited. Systematic reviews show valid results mainly in group comparisons versus polysomnography, with measurement scatter. For better sleep quality, lifestyle changes—and for insomnia, behavior therapy—remain central.

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Longevity11 min

Telomere-Lengthening: What Studies Really Show (and What They Don’t)

Increasing telomere lengths is only plausibly achievable with a few approaches that have reasonably good evidence. Meta-analyses suggest measurable effects mainly for movement/exercise, lifestyle interventions, and—sometimes—social support, but these effects are usually small. For “ALT/other” telomere mechanisms there are signals, but they are primarily relevant in tumor contexts.

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Recovery11 min

Tendon Health: What Studies Support, and What’s Still Unclear

Tendon health improves more reliably when you optimize load, movement, body weight, sleep, and recovery first. The strongest evidence level comes from training and rehabilitation approaches; much of the supplement evidence is limited. What matters most is which tendon problem you have and whether the data come from RCTs, observational studies, or animal research.

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Recovery10 min

Sleep as Recovery: Effect & evidence base for sleep as recovery

“Sleep as Recovery” is plausible as a concept, but the evidence differs: for specific interventions there are meta-analyses (e.g., sleep restriction, melatonin, movement formats, and sometimes hypnotics). However, the data are often for single endpoints such as sleep quality rather than direct “recovery” of other systems. Lifestyle levers have priority over substances.

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Performance12 min

HIIT: Effects & Evidence Base — What’s Supported and What’s Not

HIIT improves measurable fitness and performance markers in many meta-analyses, especially cardiovascular performance (VO2max/CRF). For cognition, there are also positive effects in reviews, but findings depend more strongly on study design and population. The optimal dose and best protocol aren’t “one size fits all.” Side effects/risks depend on baseline status and how training is programmed.

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Sleep13 min

Sleep Onset Latency: Effects & Evidence — What Is Actually Supported

Sleep onset latency is usually influenced most strongly by behavior-adjacent factors (sleep hygiene, light/timing, movement). For supplements, the evidence base varies by substance: melatonin often shows effects, while other options—including trazodone—must be judged by their specific benefit–risk profiles as evaluated in studies. Evidence for many “tricks” is limited.

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Recovery14 min

Cold Therapy: Effects & Evidence—What’s Actually Proven?

Cold therapy (e.g., cryotherapy chamber or cold-water immersion) is often marketed for recovery and performance goals, but the evidence for clear, clinically meaningful effects is inconsistent. This overview categorizes evidence by study design, highlights common analysis pitfalls, and explains what is currently supported—and what remains open.

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Mind12 min

Microbiome Modulation: Effects & Evidence — What’s Actually Supported

Microbiome modulation often sounds straightforward, but effects are heterogeneous: outcomes depend strongly on baseline status, the intervention, and study design. This overview organizes RCTs, observational studies, and animal data—and explains why many nutrition meta-analyses are methodologically shaky. You’ll learn how to identify robust evidence rather than plausible-sounding assumptions.

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Mind12 min

Breathwork: Effects & Evidence — what’s supported and what isn’t

Breathwork can improve stress, mood, and physiological arousal in randomized studies and may be helpful for certain breathing- and pain-related topics. Meta-analyses support effects most consistently for stress/mental health and related indications. However, for specific breathing techniques, dose, and long-term safety, the data are sometimes still inconsistent.

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Recovery13 min

Compression Recovery: Effects & Evidence—what is actually supported

Compression Recovery can partly improve DOMS and measurable recovery, but effects vary by outcome and study design. Meta-analyses repeatedly show benefits, especially for delayed-onset muscle soreness (DOMS), yet there is no universal “miracle effect.” Proprioception and performance improve only in specific situations; safety is generally well covered in the available data.

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Hormones13 min

Cortisol Management: Effects & Evidence—What’s Actually Supported

Cortisol can be influenced through lifestyle, but “lowering cortisol” is not automatically the same as “being healthier.” The evidence depends heavily on how cortisol is measured and on study design. Use an evidence hierarchy (RCTs before observational work), assess the risk of bias, and limit your conclusions when data are limited.

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Cognition10 min

Bacopa monnieri: Effects & evidence – what is actually supported

Bacopa monnieri is studied mainly for memory and other cognitive endpoints. In a meta-analysis of randomized studies, there are indications of cognitive effects, but the magnitude depends strongly on the study design and the endpoints used. Newer reviews also summarize safety data; however, robust dose and bioavailability guidance is limited.

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Methods11 min

Ketogenic Diet: Effects & Evidence—What Is Actually Supported

A ketogenic diet can improve weight loss, blood sugar and triglyceride levels, and reduce seizure frequency in certain epilepsy forms. For many other goals, effects are smaller or the data is inconsistent. The evidence strongly depends on study design, target population, and study duration; lifestyle fundamentals are often the more decisive factor.

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Hormones10 min

Nutrition and Insulin Sensitivity: What the Evidence Actually Shows

The best evidence for better insulin sensitivity comes from weight loss, higher fiber intake, fewer highly processed carbohydrates, and an overall lower-energy diet. Effects are usually moderate and depend heavily on starting weight, calorie balance, and adherence. For many supplements, the data are much weaker than for nutrition and lifestyle.

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Sleep13 min

Comparing Sleep Books: Walker, Foster, and Littlehales, Reviewed Soberly

The three best-known sleep books emphasize different things: Walker explains sleep in a popular way, Foster frames chronobiology, and Littlehales provides practical guidance for everyday life and sport. For readers, the key point is that Walker’s mortality claims were publicly criticized; the most robust data concern sleep duration, regularity, and light.

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Sleep11 min

Sleep Stack Compared: How to Properly Place Magnesium Forms and Glycine

Before supplements, prioritize sleep hygiene, morning light, movement, and enough fluids. For magnesium, the evidence for direct sleep effects is overall thin; the best data for magnesium are in people with low status. Glycine 3 g before bed has been studied in small RCTs with better subjective sleep quality and less daytime sleepiness, but the studies are small.

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Methods10 min

Online Summits 2026: Which Biohacking Formats Are Actually Worth It

Many free online summits are primarily marketing funnels with backend sales; they are only worthwhile in terms of content when they provide clear evidence, independent speakers, and transparent sponsors. Because screen time has been shown to worsen sleep quality, the practical value is often good only when you choose sessions deliberately and do not keep consuming until sleep suffers.

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Methods13 min

Health Optimisation Summit Berlin: What Was Really Worth It After 3 Days

The Health Optimisation Summit Berlin is especially worthwhile for readers looking for concrete contacts, new perspectives, and curated content; as a pure source of knowledge, the talks do not replace systematic evidence review. Its biggest value usually lies in networking, selected workshops, and orientation on which trends are actually supported by solid evidence.

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Performance11 min

Biohacking and the female cycle: training, nutrition and recovery by phase

Training, nutrition and recovery can be adapted to the female cycle, but the effects are usually small to moderate and highly individual. The most consistent pattern is: place harder sessions more often in the follicular phase, plan for a higher subjective load in the luteal phase, prioritize sleep and energy intake, and avoid overestimating the evidence.

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Hormones11 min

Iron Deficiency in Women: Ferritin, Symptoms, and the Evidence

Ferritin is a storage-iron marker, and in women values below 50 ng/ml can be associated with fatigue, reduced performance, and hair loss even with normal Hb. Standard primary-care tests often miss early deficiencies; ferritin, blood count, and inflammatory markers are needed for interpretation. Iron should only be supplemented after diagnosis, because overdose and incorrect self-treatment carry risks.

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Mind12 min

Who should start biohacking — and who shouldn’t?

Biohacking is mainly useful for healthy adults interested in sleep, movement, nutrition, and self-observation. You should not start, or should only do so with medical supervision, during pregnancy, with severe illness, a history of eating disorders, as a minor, or with risky experiments involving sleep, fasting, or stimulants. The benefit depends heavily on the method, goal, and evidence base.

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Longevity11 min

David Sinclair’s “Lifespan”: What the Science Supports and Where Marketing Begins

“Lifespan” is not a scam, but it is also not proof of an anti-aging program. The strongest evidence is for basic biology around NAD+ and sirtuins; for NMN in humans, the data are still small and short. Lifestyle levers remain more relevant than supplements, and Sinclair’s roles at Sirtris and InsideTracker make a critical reading necessary.

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Hormones12 min

Stacy Sims’ “Roar” vs. “Next Level”: Which book is right for whom?

“Roar” is primarily intended for menstruating athletes, while “Next Level” is for women in perimenopause and menopause. The practical difference is less about “more biohacking” than about the hormonal phase, the nutritional recommendations, and the training focus. The evidence for many specific book claims is partly limited and not always directly supported by RCTs.

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Substances11 min

Curcumin: Bioavailability, Piperine and Liposomal Forms Under the Microscope

Curcumin is pharmacokinetically difficult: unchanged Curcumin is only poorly detectable in the blood after oral intake. Piperin can markedly increase bioavailability in a widely cited human study, but it also carries interaction risks. Formulations such as Meriva, Theracurmin, or BCM-95 improve absorption, yet clinical benefits are not always shown to be proportional to higher blood concentrations.

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Cognition11 min

Magnesium Threonate (Magtein): Brain-available, but does it really improve cognition?

Magnesium threonate is biologically plausible because it is supposed to reach the blood-brain barrier better, but the human evidence is still thin. There are small RCTs with hints of better cognitive measures and sleep, but the benefit is not securely established. For sleep, sleep hygiene, light, and movement come first; among supplements, the evidence for magnesium overall is stronger than for threonate specifically.

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Longevity12 min

Resveratrol: What the RCTs really show — and what they don’t

Resveratrol is interesting in mouse and mechanistic studies, but for human longevity endpoints there is currently no convincing RCT evidence. The oft-cited sirtuin story comes mainly from preclinical data; in human studies, effects are small, inconsistent, or dependent on baseline status. Anyone aiming to optimize health should first address sleep, movement, nutrition, and light.

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Sleep10 min

Morning Daylight: Cortisol-Awakening Response and Circadian Reset

Morning daylight is one of the most effective, lowest-cost interventions for the circadian rhythm: it shifts and stabilizes the internal clock, promotes evening melatonin release, and can improve daytime alertness in many people. The often-cited “1000 lux in the first hour” rule is practical, but the evidence is more complex than social-media shorthand suggests.

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Methods11 min

Intermittent Fasting: What the RCTs Show — Beyond Weight

Most randomized studies show: intermittent fasting is usually about as effective as classic calorie restriction for weight loss, but not clearly superior. For glucose, insulin, and other metabolic markers, the effects are small to moderate and strongly dependent on the comparison diet. Human evidence for autophagy remains thin; in women, menstrual disruption and overly aggressive fasting protocols should be taken seriously.

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Sleep11 min

Sleep Hygiene: Which levers really have the biggest effect on sleep

The biggest sleep-hygiene effects usually do not come from supplements, but from consistency: a fixed wake time, plenty of morning light, less bright light in the evening, a cool bedroom, caffeine early enough, and no alcohol as a sleep aid. The strength of the data varies by lever; the most robust evidence is for light, caffeine, and alcohol effects on sleep architecture, while some everyday rules are derived more from observations and mechanistic reasoning.

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Substances10 min

Semaglutide and Tirzepatide: What the Long-Term Data Show on Weight Loss

Semaglutide and Tirzepatide are among the most effective medications for weight loss; however, the long-term benefit depends heavily on whether treatment is continued and combined with nutrition, exercise, and sleep. After stopping, the risk of weight regain is relevant. Data on muscle mass loss are still limited, and lifestyle factors remain central to maintaining results.

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Substances10 min

Berberine for Blood Sugar and Insulin Resistance: What the Studies Really Show

Berberine can moderately lower blood sugar in people with type 2 diabetes and insulin resistance, but the data are heterogeneous and study quality is often limited. Reviews and meta-analyses usually show a small to medium effect on fasting blood glucose, HbA1c, and insulin resistance; direct comparisons with metformin exist, but they are short and methodologically limited. Priority should go to sleep, movement, weight loss, and diet; berberine is not a substitute for physician-managed therapy.

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