The research behind
every recommendation

Magnesium is the fourth most abundant mineral in the body and a cofactor in over 300 enzymatic reactions. Estimated 50-80% of adults in the US are deficient, largely due to soil depletion and processed food consumption. The glycinate form is chelated to the amino acid glycine, offering superior absorption and minimal gastrointestinal side effects compared to cheaper forms like oxide.

Vitamin D3 (cholecalciferol) functions more like a hormone than a vitamin, regulating over 1,000 genes and impacting immune function, mood, bone density, and energy. Estimated 40-50% of US adults are deficient. K2 (MK-7 form) is paired with D3 because it directs calcium to bones and teeth rather than arterial walls, making the combination meaningfully safer and more effective than D3 alone.

EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) are essential omega-3 fatty acids the body cannot synthesize and must obtain from food or supplementation. DHA comprises approximately 40% of the polyunsaturated fatty acids in the brain. The modern Western diet has an omega-6 to omega-3 ratio of approximately 15-20:1; the evolutionarily appropriate ratio is closer to 4:1, driving chronic inflammation.

B vitamins are water-soluble cofactors in hundreds of enzymatic reactions including ATP production, neurotransmitter synthesis, DNA methylation, and homocysteine metabolism. The methylated forms (methylfolate and methylcobalamin) are the biologically active forms — critical for the estimated 40% of people with MTHFR gene variants who cannot efficiently convert synthetic folic acid to its active form.

Zinc is essential for immune function, wound healing, DNA synthesis, protein production, and testosterone metabolism. Copper is always paired with zinc because high-dose zinc supplementation depletes copper — both minerals compete for intestinal absorption. The combination maintains the proper physiological balance.

Vitamin C (ascorbic acid) is a potent antioxidant and essential cofactor in collagen synthesis, immune function, and neurotransmitter production. Unlike most mammals, humans cannot synthesize vitamin C endogenously. Stress, smoking, and illness significantly increase vitamin C requirements.

Ashwagandha (Withania somnifera) is an adaptogenic herb used in Ayurvedic medicine for over 3,000 years. KSM-66 is the most clinically researched full-spectrum root extract, standardized to 5% withanolides. It works primarily by modulating the hypothalamic-pituitary-adrenal (HPA) axis — the central stress response system.

Rhodiola rosea is an adaptogenic herb from the cold mountainous regions of Europe and Asia. Its active compounds (rosavins and salidroside) exert effects on serotonin, dopamine, and norepinephrine systems, while also modulating cortisol and supporting mitochondrial energy production.

Maca (Lepidium meyenii) is a Peruvian root vegetable used traditionally for energy, fertility, and hormonal balance. Unlike phytoestrogenic herbs, maca does not directly supply hormones but appears to work on the hypothalamus and pituitary to support endogenous hormone production.

DIM is a compound formed from the digestion of indole-3-carbinol, found in cruciferous vegetables (broccoli, cauliflower, cabbage). It supports healthy estrogen metabolism by promoting the conversion of potent estrogens to less active forms, which may help with estrogen-dominant conditions.

Phosphatidylserine (PS) is a phospholipid that constitutes 15% of brain cell membranes. It plays key roles in cell signaling, neurotransmitter release, and cortisol regulation. The brain can produce PS but production declines with age.

Probiotics are live microorganisms that, when administered in adequate amounts, confer a health benefit on the host. The gut microbiome contains trillions of microorganisms and has been called the "second brain" due to the bidirectional communication between the gut and central nervous system via the vagus nerve.

Digestive enzymes (protease, lipase, amylase, and others) facilitate the breakdown of proteins, fats, and carbohydrates. Enzyme insufficiency — whether from aging, pancreatic dysfunction, or chronic stress — impairs nutrient absorption and contributes to bloating, gas, and digestive discomfort.

Glutamine is the most abundant amino acid in the bloodstream and the primary fuel source for intestinal epithelial cells. It maintains gut barrier integrity, reducing intestinal permeability ("leaky gut"). During stress, illness, or intense exercise, glutamine demand can exceed supply.

Bovine colostrum is the first milk produced after birth, rich in immunoglobulins, growth factors, lactoferrin, and proline-rich polypeptides. Research shows it can support gut barrier integrity, immune function, and athletic recovery in adults.

Berberine is an alkaloid found in several plants used in traditional medicine. It has been called "nature's metformin" for its effects on blood sugar regulation, acting through AMPK activation. It also significantly modifies gut microbiome composition.

Hericium erinaceus (Lion's Mane) is a medicinal mushroom that uniquely stimulates the synthesis of Nerve Growth Factor (NGF) and Brain-Derived Neurotrophic Factor (BDNF) — proteins that support the growth, maintenance, and survival of neurons. It is the only known food source of NGF precursors.

Bacopa monnieri is an Ayurvedic herb with over 3,000 years of use for memory and cognitive enhancement. Its active compounds (bacosides) enhance communication between brain neurons and protect brain cells from oxidative stress. Effects are cumulative and develop over several weeks.

Alpha-GPC (Alpha-glycerophosphocholine) is the most bioavailable form of choline, a precursor to acetylcholine — the neurotransmitter critical for memory, learning, and muscle contraction. It crosses the blood-brain barrier effectively and has been studied for both cognitive enhancement and athletic performance.

L-Theanine is an amino acid found almost exclusively in tea leaves. It promotes alpha brainwave activity — the relaxed-alert state associated with meditation. When combined with caffeine, it produces focused calm energy without the jitteriness of caffeine alone.

Acetyl-L-Carnitine is the acetylated form of L-Carnitine that crosses the blood-brain barrier. It supports mitochondrial energy production in the brain, acts as an acetylcholine precursor, and has neuroprotective antioxidant properties.

Creatine is one of the most extensively studied sports supplements, with over 500 peer-reviewed studies. It works by replenishing phosphocreatine stores in muscles and the brain, enabling rapid ATP regeneration during high-intensity efforts. It is effective regardless of diet or training level and has emerging evidence for cognitive benefits.

Beta-alanine is a non-essential amino acid that combines with histidine to form carnosine, which buffers acid in muscles during high-intensity exercise. Elevated carnosine levels delay fatigue and improve performance in exercises lasting 1-4 minutes.

Electrolytes (sodium, potassium, magnesium, chloride) are minerals that carry electrical charges essential for muscle contraction, nerve function, and fluid balance. Losses through sweat can impair performance and cognition before thirst signals develop.

Collagen is the most abundant protein in the body, forming the structural scaffold of skin, tendons, ligaments, and bone. Collagen peptides are hydrolyzed (pre-digested) forms that are more readily absorbed. Evidence supports benefits for joint health, skin elasticity, and connective tissue repair when taken with vitamin C.

Coenzyme Q10 is a fat-soluble compound essential for mitochondrial energy production (ATP synthesis) and a powerful antioxidant protecting cells from oxidative damage. The body produces less CoQ10 with age — production peaks in the mid-20s and declines significantly by the 40s. Ubiquinol is the reduced, active form with superior absorption.

N-Acetyl Cysteine is a precursor to glutathione — the body's primary endogenous antioxidant. It replenishes glutathione stores, supports liver detoxification, thins mucus, and has been shown to reduce compulsive behaviors. It is used medically as an antidote to acetaminophen (Tylenol) overdose.

NMN is a precursor to NAD+ (Nicotinamide Adenine Dinucleotide), a coenzyme essential for energy metabolism, DNA repair, and sirtuin activation. NAD+ levels decline by approximately 50% between ages 40 and 60. NMN supplementation has shown significant benefits in animal studies and emerging human trials.

Resveratrol is a polyphenol found in grapes, red wine, and berries. It activates sirtuin proteins (particularly SIRT1) which regulate cellular aging, metabolism, and stress resistance. It has potent anti-inflammatory and antioxidant properties.

Quercetin is a flavonoid antioxidant found in onions, apples, and berries. It has senolytic properties (selectively eliminates dysfunctional "zombie" cells), anti-inflammatory effects, and supports immune function by inhibiting viral replication. Often paired with bromelain for enhanced absorption.

Biotin (Vitamin B7) is essential for keratin production — the protein that makes up hair, skin, and nails. While severe biotin deficiency causing hair loss is well-documented, the evidence for supplementation in non-deficient individuals is more limited. Best combined with zinc for comprehensive hair health.

Astaxanthin is a carotenoid antioxidant found in microalgae and seafood (salmon, shrimp). It is one of the most potent natural antioxidants — 6,000x stronger than vitamin C and 550x stronger than vitamin E in certain antioxidant assays. It uniquely spans cell membranes, providing both interior and exterior cell protection.

Hyaluronic acid (HA) is a naturally occurring polysaccharide that can hold up to 1,000x its weight in water. Skin contains approximately 50% of the body's total HA, which declines significantly with age. Oral HA supplements have been shown to reach the skin and improve hydration from within.