Minerals & Electrolytes

A complete guide to iron supplements: heme vs non-heme, ferrous bisglycinate, alternate-day dosing, ferritin testing, who should and should not take them.

A registered dietitian compares iron bioavailability across heme vs non-heme, supplement forms, the vitamin C boost, and the right pick for your goal.

Complete guide to zinc: RDA 8/11 mg, forms ranked by absorption, the lozenge protocol for colds, copper balance, and the FDA nasal-spray warning.

Complete guide to magnesium in 2026: RDA, food sources, who needs to supplement, forms ranked by bioavailability, dosing, interactions, and labs.

A registered dietitian compares magnesium bioavailability across glycinate, citrate, oxide, threonate, and malate with RCT evidence and cost-per-active-mg math.

If you're on Ozempic, Wegovy, Mounjaro, or Zepbound and you've noticed you're drinking less water than you used to, you're not imagining it. GLP-1 receptor agonists blunt thirst signaling as part of their mechanism of action, and slower gastric emptying means fluid you do drink moves through your system at a different rate. The result

If you are considering magnesium for heart health, the most evidence-backed reasons are pretty practical: it can modestly lower blood pressure, support normal heart rhythm, and help cover a common dietary shortfall. The catch is that the “best” magnesium depends on your goal (blood pressure, palpitations, medication side effects, constipation) and your tolerance. This guide

Migraines can feel random, but they often follow patterns in the brain and the body – and magnesium is one of the few supplements with real clinical support for prevention. Magnesium for migraines may help reduce how often attacks happen and how intense they feel, especially for people who get migraine with aura or tend

Many people try fiber first, drink more water, and still feel stuck. Magnesium for constipation can be a practical next step because certain magnesium salts pull water into the intestines, which softens stool and helps it move. This article breaks down which forms work best, how fast they tend to act, and how to dose

That sudden calf “grab” at 2 a.m. can make anyone search for a quick fix – and magnesium for muscle cramps is one of the most common suggestions. But when researchers put magnesium supplements to the test in controlled trials, the results are far less convincing than the marketing. This article breaks down what the