Can ferrous sulfate raise ferritin levels? Learn how oral iron supplements replenish iron stores, how hepcidin regulates absorption, and why low ferritin may contribute to fatigue and hair loss. Discover when iron supplementation is beneficial, why increasing ferritin does not guarantee hair regrowth, and the potential risks of unnecessary iron therapy. Understanding the cause of low ferritin is essential to choosing safe, effective treatment.

Your ferritin may be marked “normal,” but does that mean your iron stores are adequate when you are losing hair? Iron deficiency can develop before anemia, and lower ferritin has been associated with telogen effluvium. But there is no proven universal ferritin target for hair growth—and low ferritin should not automatically mean taking iron. Learn why ferritin is a diagnostic clue, what can cause depleted iron stores, and why unexplained hair loss deserves a broader evaluatio

A normal fasting glucose does not always mean normal metabolic health. During early insulin resistance, the pancreas may compensate by producing more insulin, keeping glucose deceptively normal. Measuring fasting insulin alongside glucose may reveal this hidden metabolic stress earlier. Learn why fasting insulin, HOMA-IR, A1c, triglycerides, waist circumference, and other markers can provide a more complete picture of insulin resistance and metabolic health.

Dandelion extract may offer supportive benefits for urinary tract infections by promoting urine flow and helping the urinary tract naturally flush itself. Its role is adjunctive—not a replacement for appropriate treatment. When used alongside D-mannose, adequate hydration, and antibiotics when clinically indicated, dandelion may become part of a broader strategy for urinary health, particularly in patients with recurrent or persistent urinary symptoms.

A second opinion is not necessarily about finding a doctor who disagrees. Shared electronic health records provide tremendous continuity, but previous diagnostic impressions may sometimes influence how later physicians approach a case. Learn about diagnostic momentum, outdated problem-list diagnoses, and why an independent second opinion may provide valuable fresh thinking when symptoms persist, treatment fails, or the diagnosis simply does not fit.

Glycine is considered a nonessential amino acid because the body can make it—but can it always make enough? Emerging evidence suggests that aging, insulin resistance, oxidative stress, and increased connective-tissue demands may create a mismatch between glycine supply and metabolic need. Learn about possible signs of glycine insufficiency, plasma amino-acid testing, glycine-rich foods, sleep dosing, collagen, glutathione, and GlyNAC.

Pulse pressure is the difference between systolic and diastolic blood pressure. For example, 120/80 mmHg produces a pulse pressure of 40 mmHg. Pulse pressure often widens with age as large arteries become stiffer. In older adults, a persistently wide pulse pressure may indicate increased arterial stiffness and cardiovascular risk, including stroke risk. It should be interpreted together with age, systolic and diastolic pressures, medical conditions, and overall cardiovascular

Your resting heart rate is more than just a number—it is a powerful biomarker of cardiovascular fitness, autonomic nervous system balance, metabolic health, and healthy aging. Learn why "normal" may not always mean "optimal," what research reveals about heart rate and longevity, and how exercise, sleep, nutrition, stress management, and overall health influence your pulse. Discover practical strategies to improve cardiovascular efficiency and support a longer, healthier life.

Could a medication long used for bipolar disorder also help support mood, protect the brain, and promote healthy aging at much lower doses? Emerging research suggests low-dose lithium may enhance neuroplasticity, reduce neuroinflammation, improve mitochondrial function, and influence pathways involved in depression and cognitive decline. Learn the current science, safety considerations, and how a systems-based evaluation may improve outcomes.

Quercetin is a plant compound found in onions, apples, berries, and capers. Emerging research suggests that certain forms may influence glucose absorption and some of the transport pathways associated with SGLT activity. Could this help support diabetes, insulin resistance, weight management, and metabolic health? Learn what is established, what remains theoretical, and why quercetin should complement—not replace—appropriate medical treatment.