Periods aren’t just about pads and cramps. There’s this deep fatigue that often sneaks in, leaving you feeling foggy, weak, and wondering, “Why am I this exhausted?” As someone who has spent over a decade working with women navigating their hormonal health, I can confidently say: it’s not just in your head. Your body might be asking for more iron.

So, what’s going on during your period

Each month, when you bleed, your body loses a certain amount of blood, and with that, iron. Iron is a key mineral that helps make hemoglobin, the protein in red blood cells that carries oxygen from your lungs to every part of your body. Less iron = less oxygen = more fatigue.

If you’re already on the lower side of iron stores (which is quite common among menstruators), your period can tip you into a state of iron deficiency, which often shows up as:

Extreme tiredness
Dizziness or headaches
Breathlessness, even after light activity
Pale skin or brittle nails
Craving ice or chalk (yes, that’s a thing!)

And no, this isn’t just “normal period tiredness.” It’s your body waving a little red flag.

Why iron matters more than we think

Iron doesn’t just fuel energy. It supports brain function, immune strength, hormonal balance, and even your mood. Ever felt unusually anxious or moody around your period? It might not just be hormones—low iron can amplify those emotional waves, too.

How much iron do you need

On average, menstruating women need 18 mg of iron per day. During your period, your needs can spike higher, especially if you have heavy flows or longer cycles.

The best ways to replenish your iron

Now here’s the good news: your body is wise and resilient. With a little support, it knows how to bounce back. Here’s how you can help it:

1. Eat iron-rich foods daily

There are two types of iron: heme (from animal sources) and non-heme (from plant sources). Heme iron is absorbed more easily, but you can still meet your needs with plant-based sources if you're intentional.

Animal-based: Lean red meat, chicken, turkey, liver, egg yolks
Plant-based: Spinach, lentils, chickpeas, tofu, pumpkin seeds, quinoa, blackstrap molasses

Pro tip: Pair iron-rich meals with vitamin C (like citrus fruits, bell peppers, or tomatoes) to boost absorption.

2. Reduce iron blockers

Some foods and drinks can interfere with iron absorption if consumed in large amounts around meals. These include:

Tea and coffee
Calcium supplements or dairy
High-fiber bran cereals (they’re healthy, but best not paired with your iron-rich meal)

3. Consider supplements, mindfully

If you have heavy periods or have been diagnosed with low iron levels, a supplement may be necessary. Always check with a healthcare provider before starting iron supplements, as excess iron can also be harmful.