absorption

How the body absorbs nutrients from food and supplements, including dietary inhibitors, medications, and physiological factors, especially for iron.

🥬 Is Spinach Actually a Good Source of Calcium?

Aug 18, 2026

•

3 min read

🥬 Is Spinach Actually a Good Source of Calcium?

Oxalate, phytate, and the fortificant in your milk actually decide how much calcium you keep.

Isabelle Feldhaus

🦠 Is H. pylori why your iron won't come up?

Jul 28, 2026

•

3 min read

🦠 Is H. pylori why your iron won't come up?

Months of iron supplements and no change in your ferritin? The reason may be a silent infection in your stomach.

Isabelle Feldhaus

🧃 Does apple cider vinegar actually help your iron?

Jul 21, 2026

•

4 min read

🧃 Does apple cider vinegar actually help your iron?

Apple cider vinegar, betaine HCl — the case for boosting your stomach acid runs into one critical problem.

Isabelle Feldhaus

🦴 How Do You Actually Increase Bone Density?

Jul 14, 2026

•

4 min read

🦴 How Do You Actually Increase Bone Density?

Ten things claim to build or protect your bones. Here's the ranked order of what the evidence shows can make the biggest difference.

Isabelle Feldhaus

💬 "You don't have low iron, you just can't use it"

Jul 7, 2026

•

4 min read

💬 "You don't have low iron, you just can't use it"

Two kinds of low iron feel identical, and lactoferrin only speaks to one of them.

Isabelle Feldhaus

Jun 30, 2026

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3 min read

☀️ Can low vitamin D cause low iron?

Vitamin D lowers hepcidin, the hormone that regulates iron. So does topping it up move the needle?

Isabelle Feldhaus

Jun 9, 2026

•

3 min read

🍬 Gummy Vitamins vs Pills: Do They Absorb the Same?

From vitamin C to iron to melatonin, and the catch that has nothing to do with absorption.

Isabelle Feldhaus

🤳🏼 TikTok Says Matcha Can Lower Iron — Here’s How It Works

Oct 28, 2025

•

4 min read

🤳🏼 TikTok Says Matcha Can Lower Iron — Here’s How It Works

Learn how matcha’s unique compounds can reduce iron absorption and what to do about it.

Isabelle Feldhaus

Sep 16, 2025

•

6 min read

🤑 Rich is Relative

The truth about so-called “iron-rich” foods like nettle tea and spinach.

Isabelle Feldhaus

🔥 Acid Blockers and Iron: When Relief Comes at a Cost

Aug 12, 2025

•

6 min read

🔥 Acid Blockers and Iron: When Relief Comes at a Cost

Unpacking the hidden trade-offs between relief and nutrient depletion.

Isabelle Feldhaus

🥣 Iron-Fortified Foods Can’t Help You If You Do This at Meals

Jul 22, 2025

•

6 min read

🥣 Iron-Fortified Foods Can’t Help You If You Do This at Meals

Why your mealtime habits could be quietly sabotaging your iron, even if you eat all the right foods.

Isabelle Feldhaus

🥣 Not All Iron Is Equal—And Your Food Might Be Fortified with the Worst Kind

Jul 1, 2025

•

5 min read

🥣 Not All Iron Is Equal—And Your Food Might Be Fortified with the Worst Kind

Why your ‘iron-rich’ cereal might not be doing much at all.

Isabelle Feldhaus

🌾 Are Women Designed to Be Iron-Deficient? Why Fortified Foods Still Leave Us Lacking

Jun 13, 2025

•

13 min read

🌾 Are Women Designed to Be Iron-Deficient? Why Fortified Foods Still Leave Us Lacking

We’ve relied on iron fortification for decades. So why is deficiency still so common?

Isabelle Feldhaus

🥫 What Processed Foods Are Doing to Your Iron Levels

Jun 3, 2025

•

5 min read

🥫 What Processed Foods Are Doing to Your Iron Levels

The hidden ingredients that block your body from getting the iron it needs.

Isabelle Feldhaus

🤔 The Smart Woman’s Guide to Iron Supplements (Part 2): Are You Taking Them the Wrong Way?

May 16, 2025

•

10 min read

🤔 The Smart Woman’s Guide to Iron Supplements (Part 2): Are You Taking Them the Wrong Way?

Absorb more iron, skip the side effects, and optimize your routine with these science-backed strategies.

Isabelle Feldhaus

🚨 Why Your Iron Supplement Might Not Be Working

May 13, 2025

•

5 min read

🚨 Why Your Iron Supplement Might Not Be Working

Still feeling tired? These 3 overlooked factors could be blocking your progress.

Isabelle Feldhaus

⚠️ The Iron Supplement Mistake You’re Probably Making

Apr 15, 2025

•

6 min read

⚠️ The Iron Supplement Mistake You’re Probably Making

A simple tweak to your supplement routine could help you absorb up to 50% more iron—while cutting side effects.

Isabelle Feldhaus

⏰ When to Take Iron for Better Absorption (and Fewer Side Effects)

Apr 1, 2025

•

6 min read

⏰ When to Take Iron for Better Absorption (and Fewer Side Effects)

Get more from your supplement by changing when you take it.

Isabelle Feldhaus

⚠️ The Iron Deficiency Trap: When Eating More Iron Isn’t the Answer

Mar 4, 2025

•

10 min read

⚠️ The Iron Deficiency Trap: When Eating More Iron Isn’t the Answer

The problem may not be how much iron you’re eating, but whether your body is actually absorbing it.

Isabelle Feldhaus

🌅 Energize Your Day: Iron-Rich Meals and Smarter Coffee Habits

Feb 18, 2025

•

8 min read

🌅 Energize Your Day: Iron-Rich Meals and Smarter Coffee Habits

Simple tweaks to your coffee habits and meals can power your day with lasting energy.

Isabelle Feldhaus

absorption

🥬 Is Spinach Actually a Good Source of Calcium?

🦠 Is H. pylori why your iron won't come up?

🧃 Does apple cider vinegar actually help your iron?

🦴 How Do You Actually Increase Bone Density?

💬 "You don't have low iron, you just can't use it"

☀️ Can low vitamin D cause low iron?

🍬 Gummy Vitamins vs Pills: Do They Absorb the Same?

🤳🏼 TikTok Says Matcha Can Lower Iron — Here’s How It Works

🤑 Rich is Relative

🔥 Acid Blockers and Iron: When Relief Comes at a Cost

🥣 Iron-Fortified Foods Can’t Help You If You Do This at Meals

🥣 Not All Iron Is Equal—And Your Food Might Be Fortified with the Worst Kind

🌾 Are Women Designed to Be Iron-Deficient? Why Fortified Foods Still Leave Us Lacking

🥫 What Processed Foods Are Doing to Your Iron Levels

🤔 The Smart Woman’s Guide to Iron Supplements (Part 2): Are You Taking Them the Wrong Way?

🚨 Why Your Iron Supplement Might Not Be Working

⚠️ The Iron Supplement Mistake You’re Probably Making

⏰ When to Take Iron for Better Absorption (and Fewer Side Effects)

⚠️ The Iron Deficiency Trap: When Eating More Iron Isn’t the Answer

🌅 Energize Your Day: Iron-Rich Meals and Smarter Coffee Habits

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