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Understand risk early

Turn health signals into better prevention questions

Learn how screening results, family history, trends and common risk signals fit together—and when professional follow-up matters.

63 published guidesBrowse the complete library

Illustrated prevention and health risk guide with cardiovascular context

Prevention & Health Risks

Published guides

Prevention & Health Risks

63 results

In-depth guideSupplementsBeetroot Extract and Dietary Nitrate: Performance, Blood Pressure and SafetyA careful guide to beetroot extract and dietary nitrate, covering exercise evidence, blood pressure, product labels, mouthwash, medicines, kidney-stone context and safety.Updated Sep 5, 202616 minute read

In-depth guideBlood tests and biomarkersSerum Iron Blood TestUnderstand what serum iron measures, why timing matters and how it differs from ferritin. Read high or low results with the complete iron panel.Updated Sep 20, 20265 minute read

In-depth guideBlood tests and biomarkersFibrinogen Blood Test: Meaning, Units and Clinical ContextUnderstand fibrinogen's role in clotting, what high or low activity can mean, and why the assay, sample quality and local laboratory interval matter.Updated Sep 6, 202610 minute read

In-depth guideBlood tests and biomarkersPTH Blood Test: Meaning, Calcium and Kidney ContextUnderstand what a parathyroid hormone result can show, why it belongs with calcium and related tests, and how primary, secondary and kidney-related patterns differ.Updated Sep 4, 202614 minute read

In-depth guideBlood tests and biomarkersAmylase Blood TestLearn what an amylase blood test measures, why high values have several possible causes, and how specimen type, timing, lipase and laboratory ranges matter.Updated Sep 9, 20265 minute read

In-depth guideBlood tests and biomarkersFree T4 Blood Test: Meaning, TSH and Result ContextUnderstand free T4, how it differs from total T4, and why TSH, medicines, pregnancy and laboratory interference matter when reading a thyroid result.Updated Sep 8, 20265 minute read

In-depth guideBlood tests and biomarkersLipase Blood TestLearn what a lipase blood test measures, why laboratory ranges and timing matter, and why a high value alone cannot diagnose pancreatitis or measure recovery.Updated Sep 8, 20265 minute read

In-depth guideBlood tests and biomarkersPhosphate (Phosphorus) Blood TestUnderstand phosphate blood results, age-specific laboratory ranges, and the roles of kidneys, calcium and PTH. A blood value is not a dietary intake score.Updated Sep 12, 20265 minute read

In-depth guideBlood tests and biomarkersProlactin (PRL) Blood Test: Meaning and Clinical ContextUnderstand what a prolactin or PRL result can and cannot show, and why timing, medicines, pregnancy, stress, thyroid and kidney context matter.Updated Sep 6, 202611 minute read

In-depth guideBlood tests and biomarkersChloride Blood Test: Low, High and Acid-Base ContextLearn how to read a chloride blood test, including low and high results, report-specific intervals, related electrolytes, trends and symptom-led safety.Updated Sep 4, 202613 minute read

In-depth guideBlood tests and biomarkersTotal Iron-Binding Capacity (TIBC)Understand high or low TIBC, its relationship to transferrin and UIBC, and why binding capacity must be read with iron, ferritin and clinical context.Updated Sep 20, 20265 minute read

In-depth guideSupplementsAcacia Fiber: Gut Evidence, Dose & SafetyUnderstand acacia fiber and gum arabic, bowel and glucose evidence, doses studied, gradual use, side effects and product-quality limits.Updated Sep 2, 202614 minute read

In-depth guideSupplementsInositol for PCOS: what myo-inositol and D-chiro-inositol evidence supportsAn evidence-graded guide to myo-inositol and D-chiro-inositol for PCOS, including metabolic signals, fertility uncertainty, pregnancy boundaries, quality and safety.Updated Sep 3, 202624 minute read

In-depth guideSupplementsProbiotics: Strains, Benefits, CFU & SafetyChoose probiotics by strain and purpose, not CFU alone. See evidence limits, label checks, storage, side effects and when live microbes need medical advice.Updated Aug 29, 202617 minute read

In-depth guideSupplementsVitamin B12 supplements: benefits, dosage, forms and blood testsAn evidence-based vitamin B12 guide covering deficiency, blood tests, doses, methylcobalamin versus cyanocobalamin, injections, interactions and who needs care.Updated Aug 9, 202625 minute read

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