Evidence-Based Supplement & Herb Guides

Lutein and Zeaxanthin for Healthy Aging: Eye and Brain Support

Lutein and zeaxanthin support healthy aging through macular pigment, visual performance, and possible brain benefits. Learn food sources, doses, safety, and who benefits most.

Lutein and zeaxanthin are yellow-orange plant pigments that collect in the retina and brain, where they help protect tissue exposed to light, oxygen, and...

Magnesium for Longevity: Sleep, Recovery, and Metabolic Health

Magnesium supports healthy aging through sleep, recovery, glucose control, blood pressure, and muscle function. Learn food sources, forms, doses, timing, and safety.

Magnesium supports the quiet systems that shape healthy aging: sleep quality, muscle function, glucose control, blood pressure regulation, bone strength, and energy production. It...

Melatonin for Longevity: Sleep and Circadian Health in Aging

Melatonin for longevity works best as a targeted sleep-timing tool. Learn evidence-based benefits, dosing, timing, safety risks, and circadian habits for healthy aging.

Melatonin is useful for healthy aging when it solves a specific sleep-timing problem, not when it is treated as a general anti-aging pill. Its...

Microdose Lithium Orotate and Longevity: Evidence, Controversies, and Safety

Microdose lithium orotate has intriguing brain-aging and longevity signals, but human proof remains limited. Learn the evidence, dose issues, controversies, and safety concerns.

Microdose lithium orotate sits in an unusual place between nutrition, psychiatry, brain aging, and supplement marketing. Lithium is a naturally occurring trace element found...

NAC for Longevity: Oxidative Stress, Detox, and Resilience

Learn how NAC supports glutathione, oxidative stress control, detox pathways, respiratory resilience, dosing, safety, and smart longevity use.

N-acetylcysteine, usually called NAC, is a supplemental form of the amino acid cysteine. Its main longevity interest comes from a simple job with wide...

NAD Plus in Aging: NR, NMN, Niacin, and Niacinamide Explained

Clear guide to NAD+ in aging, comparing NR, NMN, niacin, and niacinamide for evidence, dosing, safety, side effects, and practical healthy-aging use.

NAD+ is a vitamin-B3-derived coenzyme that helps cells turn food into energy, repair damage, regulate stress responses, and keep metabolism running. Interest in NAD+...

NMN and NR for Longevity: Evidence, Use Cases, and Regulatory Status

Compare NMN and NR for longevity, including NAD+ biology, human evidence, practical use cases, dose ranges, safety concerns, product quality, and 2026 regulatory status.

NMN and NR are popular NAD+ precursors sold for healthy aging, energy metabolism, and cellular repair. They raise interest because NAD+ supports enzymes involved...

Omega 3s for Healthy Aging: EPA, DHA, and the Omega 3 Index

Learn how EPA, DHA, food sources, supplements, safety issues, and the Omega 3 Index fit into a practical healthy aging plan.

Omega 3s matter in healthy aging because they become part of cell membranes, influence inflammatory signaling, support triglyceride metabolism, and help maintain the structure...

Phosphatidylserine for Cognitive Aging: Memory and Stress Regulation

Phosphatidylserine may support memory and stress regulation in cognitive aging. Learn the evidence, dose range, safety points, and how to test whether it helps.

Phosphatidylserine is a fat-like molecule found in every cell membrane, with especially high levels in brain tissue. As a supplement, it attracts attention because...

PQQ for Longevity: Mitochondrial Biogenesis, Promise, and Limits

PQQ for longevity shows promise for mitochondrial biogenesis, cognition, and energy support, but human evidence remains limited. Learn realistic benefits, dosing, safety, and when to skip it.

PQQ, short for pyrroloquinoline quinone, has earned attention because it touches a process central to aging biology: mitochondrial health. Mitochondria turn food into usable...

Prebiotics and Postbiotics for Longevity: Inulin, GOS, and Butyrate

Learn how inulin, GOS, and butyrate fit into longevity nutrition, including benefits, dosing ranges, side effects, food sources, and smart supplement use.

Gut health affects more than digestion. A resilient gut helps regulate bowel rhythm, supports the intestinal barrier, shapes immune signaling, and produces metabolites that...

Probiotics for Healthy Aging: Strains, Functions, and Evidence

Learn how probiotics support healthy aging, which strains have the best evidence, how to choose a quality supplement, and when probiotic use needs medical caution.

Probiotics are live microbes used for a specific health effect, not a general “gut reset.” In healthy aging, their strongest roles relate to digestion,...

Pterostilbene for Healthy Aging: How It Compares to Resveratrol

Pterostilbene is a better-absorbed cousin of resveratrol, but human evidence remains limited. Learn benefits, risks, dosing, LDL concerns, and how to compare both supplements for healthy aging.

Pterostilbene is a plant polyphenol closely related to resveratrol, the better-known compound found in grapes, red wine, peanuts, and berries. Both belong to a...

Quercetin for Longevity: Senotherapeutic Mechanisms and Safety

Quercetin for longevity has early senotherapeutic evidence, including senolytic and senomorphic mechanisms, but supplement use needs careful dosing and safety review.

Quercetin is a plant flavonol found in onions, capers, apples, berries, tea, and many herbs. In longevity science, it draws attention for a specific...

Resveratrol for Longevity: Mechanisms, Human Evidence, and Safety

Learn what resveratrol does for longevity, including SIRT1 and AMPK mechanisms, human trial evidence, dosing, bioavailability, safety, and who should avoid it.

Resveratrol sits at the center of a familiar longevity story: a plant compound found in grapes, berries, peanuts, and Japanese knotweed that seems to...

Rhodiola for Healthy Aging: Stress Resilience and Recovery

Learn how rhodiola may support stress resilience, fatigue, exercise recovery, and healthy aging, with practical dosing, safety, and supplement-quality guidance.

Rhodiola rosea is a mountain herb used for fatigue, stress tolerance, and mental stamina. In healthy aging, its best fit is not “anti-aging” in...

SAMe for Healthy Aging: Mood, Methylation, and Longevity Context

Learn how SAMe fits into healthy aging, including mood evidence, methylation and homocysteine context, dosing ranges, safety risks, and who should avoid it.

SAMe is best understood as a biologically active methyl donor, not as a general anti-aging shortcut. The body makes it from methionine and ATP,...

Selenium for Longevity: Thyroid, Antioxidant Defense, and Safety

Selenium supports thyroid hormone metabolism and antioxidant enzymes, but excess intake can be harmful. Learn food sources, safe doses, supplement forms, thyroid considerations, and when testing makes sense.

Selenium sits in a narrow zone between essential and excessive. Adults need only 55 mcg per day, yet that small amount supports thyroid hormone...

Spermidine for Longevity: Autophagy and Cognitive Aging Evidence

Spermidine supports autophagy pathways, but human evidence for longevity and memory benefits remains mixed. Learn food sources, dosing limits, safety cautions, and cognitive aging research.

Spermidine sits at the intersection of nutrition, cellular cleanup, and brain aging. It is a natural polyamine, a small compound found in human cells...

Sulforaphane for Longevity: NRF2 Activation and Cellular Defense

Sulforaphane supports longevity pathways through NRF2 activation, cellular defense, detoxification, and metabolic resilience. Learn food sources, dosing, safety, and evidence.

Sulforaphane is a sulfur-rich plant compound best known for turning on NRF2, a master regulator of cellular defense. It forms when glucoraphanin, found in...