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Health & Dietary Supplements

Science-backed articles on supplements, nutrition, and performance optimization. Learn from experts and make informed decisions about your health.

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Creatine safety profile
creatine3 min read

Creatine Safety: Data, Dosing (Including 30 g), Precautions

What do studies say about creatine safety? Usual doses, special cases (0.3 g/kg ≈ ~30 g in sleep deprivation), kidneys, hydration, and interactions.

Nov 15, 2025Read more →
Zinc-Rich Foods: Top 15, Absorption, Guidelines & Risks
zinc3 min read

Zinc-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 zinc-rich foods, tips to optimize absorption (phytates, timing), daily intake guidelines, and precautions (copper, interactions).

Nov 15, 2025Read more →
Zinc: which form to choose? (benefits, tolerance, doses)
zinc2 min read

Zinc: which form to choose? (benefits, tolerance, doses)

Best zinc form by goal (immunity, skin, hair). Comparison of forms (bisglycinate, picolinate, citrate), digestive tolerance and doses.

Nov 15, 2025Read more →
Vitamin D-Rich Foods: Top 15, Absorption, Guidelines & Risks
vitamin-d3 min read

Vitamin D-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 vitamin D-rich foods, absorption tips (with lipids, D2 vs D3), daily intake guidelines, and precautions (UL, hypercalcemia).

Nov 15, 2025Read more →
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vitamin-c2 min read

Vitamin C-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 vitamin C-rich foods, tips to preserve the vitamin (cooking), daily intake guidelines, and precautions (UL, interactions with iron).

Nov 15, 2025Read more →
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vitamin-c4 min read

Vitamin C Deficiency: Symptoms, Tests, Intake, Foods

Vitamin C deficiency: symptoms of a deficit (including mild scurvy), tests and biological benchmarks, richest foods, recommended intakes, and tolerance.

Nov 15, 2025Read more →
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vitamin-b93 min read

Folate (Vitamin B9) Deficiency: Symptoms, Tests, Intake, Foods

Recognize folate (vitamin B9) deficiency, which tests to request (serum/RBC folate, homocysteine), the richest foods, and recommended intakes with tolerance.

Nov 15, 2025Read more →
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vitamin-b122 min read

Vitamin B12-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 vitamin B12-rich foods, absorption tips (intrinsic factor, medications), daily intake guidelines, and precautions (deficiency, vegetarians/vegans).

Nov 15, 2025Read more →
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vitamin-b122 min read

Vitamin B12 deficiency (vegetarians/vegans): symptoms, assessment, doses

Recognize neuro-hematological signs, understand assessments (B12, holoTC), choose doses (cyanocobalamin/methylcobalamin) and precautions.

Nov 15, 2025Read more →
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2 min read

Selenium-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 selenium-rich foods, practical tips (variability, bioavailability), daily intake guidelines, and precautions (UL, selenosis).

Nov 15, 2025Read more →
Protein-Rich Foods: Top 15, Absorption, Guidelines & Risks
protein2 min read

Protein-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 protein-rich foods (animal/plant), tips to optimize intake (digestibility, complementarity), intake guidelines, and precautions.

Nov 15, 2025Read more →
Omega-3-Rich Foods: Top 15, Absorption, Guidelines & Risks
omega-32 min read

Omega-3-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 best sources (ALA, EPA, DHA), tips to optimize absorption, intake guidelines (EPA+DHA, ALA), and precautions (anticoagulants, practical ULs).

Nov 15, 2025Read more →
Omega-3: Algae vs Fish — Efficacy, Purity, Price
omega-34 min read

Omega-3: Algae vs Fish — Efficacy, Purity, Price

Clear comparison between algae oils and fish oils: EPA/DHA, purity/contaminants, cost per serving, and profiles for whom it's most relevant.

Nov 15, 2025Read more →
Magnesium: which form to choose? (benefits, tolerance, doses)
magnesium2 min read

Magnesium: which form to choose? (benefits, tolerance, doses)

Best magnesium form by goal (sleep, stress, digestion, cramps). Comparison of forms, digestive tolerance and doses by goal.

Nov 15, 2025Read more →
Magnesium and Sleep: Evidence, Mechanisms, Doses & Precautions
magnesium3 min read

Magnesium and Sleep: Evidence, Mechanisms, Doses & Precautions

Does magnesium improve sleep? Review of clinical evidence, mechanisms (GABA, NMDA), effective doses, forms, and precautions (diarrhea, interactions).

Nov 15, 2025Read more →
Magnesium-Rich Foods: Top 15, Absorption, Guidelines & Risks
magnesium2 min read

Magnesium-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 magnesium-rich foods, practical tips (bioavailability, processing losses), daily intake guidelines, and precautions (diarrhea, kidney function).

Nov 15, 2025Read more →
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iron2 min read

Iron-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 iron-rich foods (heme vs non-heme), tips to optimize absorption (vitamin C, inhibitors), daily intake guidelines, and precautions (overload, interactions).

Nov 15, 2025Read more →
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iron2 min read

Iron deficiency: symptoms, ferritin, treatments

Recognize the signs, read ferritin (with CRP), understand common causes and treatment options with tolerance and precautions.

Nov 15, 2025Read more →
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iodine3 min read

Iodine Deficiency: Symptoms, Tests, Intake, Foods

Recognize iodine deficiency, which tests to request (urinary iodine, TSH, thyroid ultrasound), the richest foods, and recommended intakes with tolerance.

Nov 15, 2025Read more →
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guides3 min read

Supplement synergies: which to take together? (complete guide)

Best useful combinations (iron + vitamin C, vitamin D + calcium + magnesium, synbiotics, etc.), how to take them together without interference, and when to avoid stacking.

Nov 15, 2025Read more →
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guides4 min read

Supplements: how many at once? Interactions and combinations to avoid (complete guide)

How many supplements to take at once, which combinations to avoid, which to prioritize, practical spacing, and precautions (medications).

Nov 15, 2025Read more →
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guides2 min read

Potassium-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 potassium-rich foods, practical tips (cooking, sodium balance), daily intake guidelines, and precautions (kidney function, medications).

Nov 15, 2025Read more →
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guides4 min read

Nutritional deficiencies: symptoms, tests, treatments

Identify symptoms by systems, choose the right tests (ferritin, 25‑OH vitamin D, serum zinc, urinary iodine, serum magnesium vs 24h urinary magnesium), understand causes, when to consult, which doses to try and with what precautions.

Nov 15, 2025Read more →
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guides2 min read

Iodine-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 iodine-rich foods, practical tips (variability, bioavailability), daily intake guidelines, and precautions (UL, thyroid interactions).

Nov 15, 2025Read more →
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guides2 min read

Folate-Rich Foods (Vitamin B9): Top 15, Absorption, Guidelines & Risks

Top 15 best folate sources, tips (cooking, DFE, fortified foods), daily guidelines, and precautions (folic acid UL, B12).

Nov 15, 2025Read more →
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guides2 min read

Fiber-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 fiber-rich foods (soluble/insoluble), tips to optimize intake (progression, hydration), daily guidelines, and digestive precautions.

Nov 15, 2025Read more →
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guides2 min read

Supplements for energy and focus (without excessive stimulants)

Deficits to correct (iron/B12), strategic caffeine use, role of omega‑3 and sleep hygiene for sustainable energy.

Nov 15, 2025Read more →
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guides2 min read

Calcium-Rich Foods: Top 15, Absorption, Guidelines & Risks

Top 15 best calcium sources, absorption tips (vitamin D, oxalates), daily guidelines, and precautions (UL, interactions).

Nov 15, 2025Read more →
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guides4 min read

Best supplement tracker apps: tracking, scan, planning, deficiencies

Clear comparison of top apps: Supplements AI (best overall for planning and deficiency detection), Suppco (best scanner), plus two solid alternatives.

Nov 15, 2025Read more →
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calcium3 min read

Calcium Deficiency: Symptoms, Tests, Intake, Foods

Recognizing inadequate calcium intake, distinguishing hypocalcemia from dietary deficiency, which tests to request, where to find calcium in food, and safe dosing targets.

Nov 15, 2025Read more →
Zinc: deficiency symptoms
zinc1 min read

Zinc: deficiency symptoms

How to recognize low zinc? Who’s at risk and how to correct it.

Nov 14, 2025Read more →
Zinc: side effects
zinc2 min read

Zinc: side effects

Digestive effects, chronic excess (copper deficiency), interactions, dosing/ULs, special cases, and best practices.

Nov 14, 2025Read more →
Zinc: interactions with medicines and nutrients (iron, copper)
zinc1 min read

Zinc: interactions with medicines and nutrients (iron, copper)

Quinolones, tetracyclines, penicillamine, iron/copper, phytates: how to schedule doses.

Nov 14, 2025Read more →
When should you take vitamin D? Daily vs monthly, year‑round use, dosing
vitamin-d2 min read

When should you take vitamin D? Daily vs monthly, year‑round use, dosing

Daily or monthly? Year‑round? Max daily dose and adult dosing with safety benchmarks.

Nov 14, 2025Read more →
Vitamin D deficiency: symptoms, who’s at risk, what to do
vitamin-d1 min read

Vitamin D deficiency: symptoms, who’s at risk, what to do

Suggestive signs, risk populations, 25‑OH‑D testing, and practical pointers.

Nov 14, 2025Read more →
Vitamin D: morning or evening? Absorption, meals, and safety
vitamin-d2 min read

Vitamin D: morning or evening? Absorption, meals, and safety

When to take vitamin D, what to combine with, and how to avoid interactions.

Nov 14, 2025Read more →
Vitamin D: drug interactions, calcium, and precautions
vitamin-d3 min read

Vitamin D: drug interactions, calcium, and precautions

User‑friendly guide to vitamin D: interactions, calcium pairing, simple spacing rules, FAQs, lifestyle tips, D2 vs D3, food/sun, and safety.

Nov 14, 2025Read more →
Vitamin D from food: which foods to prioritize (complete table)
vitamin-d3 min read

Vitamin D from food: which foods to prioritize (complete table)

Fatty fish, eggs, UV‑exposed mushrooms, fortified foods: best sources, a practical table, and intake benchmarks.

Nov 14, 2025Read more →
Which protein to choose? Whey, casein, egg, or plant‑based
protein4 min read

Which protein to choose? Whey, casein, egg, or plant‑based

Goals, digestion, intolerance, budget, and quality: practical markers to choose well.

Nov 14, 2025Read more →
Protein timing: daily distribution and around workouts
protein1 min read

Protein timing: daily distribution and around workouts

Daily total first, 20–40 g per feeding, flexible pre/post‑workout windows.

Nov 14, 2025Read more →
Omega‑3 deficiency symptoms: signs and what to do
omega-32 min read

Omega‑3 deficiency symptoms: signs and what to do

How to spot low omega‑3 (EPA, DHA, ALA), who’s at risk, and practical fixes.

Nov 14, 2025Read more →
Omega‑3 for sport and strength training: recovery, strength, and tips
omega-32 min read

Omega‑3 for sport and strength training: recovery, strength, and tips

Inflammation, DOMS, recovery, lean mass: what EPA/DHA can and cannot do, how to trial, and safety.

Nov 14, 2025Read more →
Omega‑3: morning or evening? Best timing, meals, and tips
omega-32 min read

Omega‑3: morning or evening? Best timing, meals, and tips

Absorption, tolerance, splitting doses, and interactions: practical rules for timing.

Nov 14, 2025Read more →
Which foods are rich in omega‑3?
omega-34 min read

Which foods are rich in omega‑3?

Fatty fish, oils, and seeds: best sources of EPA, DHA, and ALA, portion guides, and practical tips.

Nov 14, 2025Read more →
Magnesium: how to test for deficiency?
magnesium2 min read

Magnesium: how to test for deficiency?

Which labs matter most, how to interpret results, and when to order more tests.

Nov 14, 2025Read more →
Magnesium: deficiency symptoms
magnesium2 min read

Magnesium: deficiency symptoms

How to recognize low magnesium? Neuromuscular, cardiovascular, and everyday signs to watch.

Nov 14, 2025Read more →
Magnesium: side effects, risks, and what to do
magnesium3 min read

Magnesium: side effects, risks, and what to do

Diarrhea, nausea, cramps… typical effects, rare warning signs, practical fixes and interactions.

Nov 14, 2025Read more →
Too much magnesium? Overdose symptoms and what to do
magnesium3 min read

Too much magnesium? Overdose symptoms and what to do

Dose‑related GI effects are common; true hypermagnesemia is rarer. Learn warning signs, causes, and fixes.

Nov 14, 2025Read more →
Marine magnesium: benefits, B6, blood pressure, effects, and timing
magnesium4 min read

Marine magnesium: benefits, B6, blood pressure, effects, and timing

What does “marine” mean in practice? Benefits, B6 combos, side effects, timing, and comparison with other forms.

Nov 14, 2025Read more →
Magnesium: causes of deficiency
magnesium2 min read

Magnesium: causes of deficiency

Why do we lack magnesium? Intake, absorption, and losses — the common mechanisms.

Nov 14, 2025Read more →
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guides4 min read

Best supplements in 2025: our picks by goal

Transparent comparison, science-based criteria, realistic dosing ranges, and safety notes to choose the best supplements for energy, sleep, immunity, digestion/joints, and heart.

Nov 14, 2025Read more →
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guides3 min read

Best supplements for muscle building: strength, mass, recovery

2025 comparison: creatine, protein, beta‑alanine, caffeine, omega‑3… goal‑based stacks, timing, and safety.

Nov 14, 2025Read more →
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guides3 min read

Best hair supplements: density and shedding

2025 comparison, common causes, useful actives, labs to do first (ferritin, 25‑OH vitamin D), precautions, and realistic timelines.

Nov 14, 2025Read more →
Ashwagandha: when to take it? Best time, meals, and dosing
ashwagandha2 min read

Ashwagandha: when to take it? Best time, meals, and dosing

What it’s used for, typical extract doses, with/without meals, splitting, and safety.

Nov 14, 2025Read more →
Ashwagandha: side effects, precautions, and interactions
ashwagandha1 min read

Ashwagandha: side effects, precautions, and interactions

Digestive effects/somnolence, ANSES warnings (liver), and when to seek care.

Nov 14, 2025Read more →
Magnesium Bisglycinate: Price, Dosage, Duration, and Comparison
magnesium4 min read

Magnesium Bisglycinate: Price, Dosage, Duration, and Comparison

Everything you need to know about magnesium bisglycinate: how to choose the right product, price, dosage, duration, best timing, and comparison with other forms.

Sep 21, 2025Read more →
Vitamin D: benefits, deficiency, food sources, supplements, dosage & risks (complete guide)
vitamin-d5 min read

Vitamin D: benefits, deficiency, food sources, supplements, dosage & risks (complete guide)

What it does, daily needs, sources from food/sun, how to supplement safely.

Sep 16, 2025Read more →
Protein & Whey: Benefits, Needs, Foods, Supplements (Complete Guide)
protein4 min read

Protein & Whey: Benefits, Needs, Foods, Supplements (Complete Guide)

Complete guide to protein: why it matters, daily needs, natural food sources, supplements like whey, and key health benefits backed by science.

Sep 16, 2025Read more →
Zinc: Benefits, Deficiency, Intakes, Foods & Supplements
zinc3 min read

Zinc: Benefits, Deficiency, Intakes, Foods & Supplements

Zinc is vital for immunity, skin health, fertility and cognition. Learn about its benefits, food sources, recommended intakes, and supplement safety.

Sep 15, 2025Read more →
Omega-3 Fatty Acids: Benefits, Sources, Dosage, and Safety
omega-33 min read

Omega-3 Fatty Acids: Benefits, Sources, Dosage, and Safety

A complete guide to omega-3s: why they matter for heart, brain, and immunity, how much you need, best sources, and potential risks.

Sep 15, 2025Read more →
Magnesium: benefits, deficiency signs, foods, and supplements (complete guide)
magnesium5 min read

Magnesium: benefits, deficiency signs, foods, and supplements (complete guide)

About half of Americans fall short on magnesium. Learn what it does, how to spot low intake, the best foods, smart supplementation, and key safety tips.

Sep 14, 2025Read more →
Magnesium Citrate: benefits, how to use it, and the best time to take it
magnesium8 min read

Magnesium Citrate: benefits, how to use it, and the best time to take it

Magnesium citrate: benefits, dosage (200-350 mg/day), best time to take it, short-term constipation use (works in 30 min-6 hours), side effects, who should avoid it, and citrate vs glycinate comparison.

Sep 14, 2025Read more →
Magnesium Taurate: A Winning Combo for Heart and Mind
magnesium4 min read

Magnesium Taurate: A Winning Combo for Heart and Mind

Why the magnesium + taurine pairing is popular for cardiovascular support and calm.

Sep 12, 2025Read more →
Ashwagandha: what you need to know
ashwagandha2 min read

Ashwagandha: what you need to know

Definition, potential benefits, mechanisms, dosing, precautions, and FAQ.

Sep 12, 2025Read more →
The complete creatine guide
creatine4 min read

The complete creatine guide

Basics, dosing, benefits, myths.

Sep 1, 2025Read more →