Iron & Anemia: More Than Just Fatigue

You get enough sleep, but you still wake up tired. Your workouts feel harder than they used to. You struggle to focus at work or need another coffee to get through the afternoon.

Maybe you feel dizzy when you stand up or get out of breath walking up the stairs. Maybe you just don’t feel like yourself lately.

You’ve had blood work done, and you’re told everything looks normal. So you keep pushing through, hoping you’ll feel better soon.

But what if low iron is part of the picture?

Low iron can affect how you feel before you develop anemia. Many women don’t realize their iron stores are low because the signs can be easy to miss or may overlap with other health concerns.

What Does Iron Have to Do With How You Feel?

Iron helps your body make hemoglobin, a protein in your red blood cells that carries oxygen around your body. Your brain and muscles need oxygen to work well.

When your iron is low, you may notice:
• Constant tiredness: You wake up tired or hit a wall halfway through the day.
• Harder workouts: You get winded faster or struggle to keep up with your usual pace.
• Brain fog: It’s harder to focus, remember things, or finish daily tasks.
• Dizziness: You feel lightheaded when standing up or bending down.
• Restless legs: Your legs feel uncomfortable at night, making it harder to relax or sleep.
• Heavy periods: You lose iron through blood each month, and heavy bleeding can make it harder to keep up.

These signs can have many causes, but low iron is one thing worth checking.

What If Your Blood Work Looks Normal?

This is where understanding your iron levels becomes important.

Hemoglobin tells us about your blood’s ability to carry oxygen. If it drops too low, you may have anemia.
Ferritin tells us about the iron stored in your body. Think of it as your iron savings account. Are you living paycheque to paycheque, or do you have savings to draw on when you need them?

Your ferritin can drop before your hemoglobin does. This means you can have low iron stores even when your hemoglobin is still within the normal range.

Other blood tests help us understand how much iron is moving through your blood and how much is available for your body to use.

Ferritin can also rise with inflammation or infection, so one result may not tell the whole story. A normal hemoglobin result doesn’t always mean your iron stores are healthy.

Why Are Women More Likely to Have Low Iron?

Periods are a common reason women lose iron. Heavy bleeding can make it hard to replace what your body loses each month.

Pregnancy, giving birth, intense exercise, and not getting enough iron from food can also play a role. Some gut problems and medicines can make it harder for your body to absorb iron.

Often, there is more than one reason. Finding the cause is an important part of making a plan that works for you.

Can Food Help?

Yes! Iron is found in both animal and plant foods.
• Animal sources (heme iron): Meat, poultry, and fish.
• Plant sources (non-heme iron): Lentils, beans, tofu, pumpkin seeds, spinach, oats, and iron-fortified cereals.

Your body absorbs iron from animal foods more easily. If you eat mostly plant-based foods, try pairing iron-rich foods with vitamin C sources like berries, citrus fruit, or bell peppers. Vitamin C helps your body absorb more iron.

Food is a great place to start, but it may not be enough to correct low iron stores. The right treatment depends on your blood work and what is causing the problem.

You Don’t Have to Keep Guessing

When I look at iron with a patient, I want to know more than what’s on a lab report. I want to understand how she feels, how she manages her day, how she handles her workouts, and whether her periods or gut health could be part of the picture.

Research shows that low iron can contribute to fatigue, even without anemia. But these symptoms can have other causes, too. Looking at your symptoms and blood work together helps us decide what to do next.