Experts explain how folate deficiency can affect your energy, brain health and red blood cells — and why heavy alcohol use may increase your risk.

For some people, feeling exhausted or dealing with headaches happens so often that they simply get used to it. They blame a busy schedule, a few nights of bad sleep or everyday stress and keep moving. But persistent symptoms aren’t something you should automatically accept as normal.

Fatigue and headaches can have countless causes, from dehydration and poor sleep to stress and underlying health conditions. Sometimes, however, your body may be missing an essential nutrient that it needs to function properly.

One nutrient that can be surprisingly easy to overlook is folate. A folate deficiency can interfere with normal red blood cell production and, when it becomes significant, may contribute to anemia, fatigue, weakness and headaches.

It can also be associated with cognitive changes. And while most people get enough folate through their diet, certain people are more vulnerable to deficiency, particularly those with absorption problems or chronic heavy alcohol use.

Here’s what to know.

Folate Deficiency Can Lead To Anemia

Folate is a B vitamin that your body needs to make DNA, support cell division and produce healthy red blood cells. When you don’t get enough over time, your body may begin producing abnormally large red blood cells that don’t develop properly.

This can result in megaloblastic anemia, a condition that can leave you feeling unusually tired or weak. You may also experience shortness of breath, dizziness or headaches, particularly when the anemia becomes more pronounced.

That’s one reason fatigue caused by a nutritional deficiency can be easy to miss. Instead of suddenly feeling sick, you may simply notice that your usual activities seem to require more effort than they used to.

The National Institutes of Health explains that folate deficiency can lead to megaloblastic anemia and symptoms including fatigue, weakness, difficulty concentrating, headache and shortness of breath.

Can Folate Deficiency Cause Headaches?

A headache doesn’t automatically mean you’re deficient in folate. Headaches can have many different causes, including dehydration, lack of sleep, stress, migraine, hormonal changes, medications and other medical conditions.

The connection with folate is often more complicated. When a significant folate deficiency causes anemia, the anemia itself may contribute to headaches and other symptoms.

In other words, the headache may not be caused directly by low folate. Instead, a deficiency can set off changes in red blood cell production that eventually contribute to anemia and related symptoms.

That’s why recurring headaches shouldn’t be self-diagnosed as a vitamin deficiency. If your headaches are frequent, severe or noticeably different from your usual headaches, it’s worth discussing them with a healthcare professional.

Folate May Also Play A Role In Brain Health

Folate isn’t only involved in making blood cells. It’s also important for normal cellular function and processes involving the nervous system, which is one reason researchers have looked at the relationship between folate status and cognitive health.

Some research has found an association between lower folate levels and cognitive decline, particularly among older adults. That doesn’t mean, however, that every memory lapse or concentration problem is caused by low folate.

Memory is complicated, and there are many possible explanations for changes in concentration or recall. Poor sleep, stress, medications, aging, vitamin B12 deficiency and other health conditions can all play a role.

So folate deficiency may be one piece of the puzzle, but it shouldn’t automatically be considered the explanation. If memory problems are persistent or worsening, a healthcare professional can help determine what may be behind them.

Who Is Most Likely To Have Folate Deficiency?

Here’s the reassuring part: serious folate deficiency is relatively uncommon among people who eat a varied diet. Folate is naturally present in many foods, while folic acid is added to a number of fortified foods, making it easier for most people to meet their nutritional needs.

Still, some people have a greater risk than others. Certain digestive conditions, increased nutritional requirements and chronic heavy alcohol use can all affect folate status.

Heavy Alcohol Use Can Increase The Risk

Alcohol is an especially important factor when discussing folate deficiency. Chronic heavy alcohol consumption can interfere with the body’s absorption and handling of folate, while heavy drinking may also be accompanied by an overall diet that doesn’t provide enough essential nutrients.

That combination can make deficiency more likely. Alcohol can also be associated with inadequate levels of other nutrients, including vitamin B12 deficiency, which is important because B12 deficiency can cause fatigue and neurological symptoms of its own.

This doesn’t mean that having an occasional drink will automatically cause a folate deficiency. The concern is primarily with chronic heavy alcohol use and the nutritional problems that can accompany it.

Digestive Conditions Can Affect Folate Absorption

Another group at higher risk includes people who have conditions that interfere with nutrient absorption. Celiac disease and inflammatory bowel disease, for example, can affect how efficiently the body absorbs certain nutrients from food.

That means someone can technically be eating foods containing folate and still have trouble maintaining adequate levels. If you have an ongoing digestive condition and experience unexplained fatigue or other symptoms, it’s worth mentioning them to your healthcare provider.

Pregnancy Increases Folate Needs

Pregnancy is another important consideration because the body’s need for folate increases. Folate is required for DNA synthesis and cell division and is especially important during the earliest stages of fetal development.

The CDC recommends that women who could become pregnant get 400 micrograms of folic acid every day to help prevent certain neural tube defects. If you’re pregnant or planning to become pregnant, talk with your healthcare provider about the appropriate prenatal vitamin and folic acid intake for your situation.

There Are Plenty Of Ways To Get Folate From Food

The good news is that you don’t need an elaborate diet to include more folate. The vitamin is found in a variety of everyday foods, including vegetables, beans, lentils, fruits, nuts and fortified grain products.

For most adults, the recommended intake is about 400 micrograms of dietary folate equivalents per day. The amount is higher during pregnancy and breastfeeding because nutritional requirements increase.

Some foods that can contribute to your daily folate intake include spinach, asparagus, lentils, beans, black-eyed peas, avocado, oranges, nuts and fortified breakfast cereals.

Eating a variety of these foods can help you meet your nutritional needs without relying on a single food or supplement. A balanced diet is usually the best starting point for maintaining adequate folate levels.

Do You Need A Folate Supplement?

Not necessarily. If you’re already getting enough folate from your diet, adding a supplement won’t necessarily make you feel more energetic or improve your memory.

And if you’re experiencing persistent fatigue or headaches, taking a vitamin without knowing the cause could mean overlooking another problem. Iron deficiency, vitamin B12 deficiency, sleep problems and numerous medical conditions can produce symptoms that look similar.

There are certain situations where folic acid supplementation is particularly important, including pregnancy or planning a pregnancy. But anyone considering a high-dose supplement should discuss it with a healthcare professional, particularly if they have an underlying health condition or take medications.

How Is Folate Deficiency Diagnosed?

Symptoms alone can’t tell you whether your folate levels are low. Feeling tired, having headaches or experiencing occasional memory problems are all common symptoms with many possible explanations.

If your symptoms are persistent, your healthcare provider can decide whether blood testing is appropriate. Depending on your symptoms and medical history, they may also evaluate other nutrients, including vitamin B12 and iron, or look for other potential causes.

That’s important because treating a suspected deficiency without confirming what’s actually happening may not address the underlying problem. The goal is to understand why you’re experiencing the symptoms in the first place.

When Should You Talk To A Doctor?

Everyone gets tired sometimes, especially after a stressful week or several nights of poor sleep. But persistent fatigue that doesn’t improve deserves more attention, particularly when it comes with other symptoms.

Recurring headaches, unusual weakness, shortness of breath, dizziness or noticeable changes in concentration or memory are all reasons to discuss your symptoms with a healthcare professional. If you regularly consume large amounts of alcohol, mention that as well, because it can be relevant when evaluating nutritional deficiencies.

Most importantly, don’t assume that one symptom automatically points to one vitamin. Finding the underlying cause is much more useful than simply trying supplements and hoping something works.

The Bottom Line

Folate deficiency can contribute to anemia, and anemia can cause symptoms such as fatigue, weakness and headaches. Significant deficiency may also be associated with cognitive changes, although memory problems have many possible causes.

For most people, getting enough folate is possible through a varied diet containing leafy greens, beans, lentils, asparagus, citrus fruits, avocado and fortified grain products.

But if you’re constantly tired, experiencing recurring headaches or noticing unexplained changes in your memory or concentration, don’t simply assume you need more sleep or another supplement.

Talk with a healthcare professional and find out what’s actually behind the symptoms. Sometimes the answer is nutritional, and sometimes there’s another explanation that needs attention.

Either way, identifying the underlying cause is the first step toward feeling more energetic and clear-headed.

Frequently Asked Questions

What are the symptoms of folate deficiency?

Common symptoms associated with significant folate deficiency include fatigue, weakness, shortness of breath and headaches, particularly when the deficiency leads to anemia. Some people may also experience changes in concentration or other symptoms, although these can have many different causes.

Can folate deficiency cause headaches?

Folate deficiency can contribute to anemia, and anemia may cause headaches. However, headaches have many possible causes, so a headache by itself doesn’t mean your folate level is low.

Can low folate cause memory problems?

Low folate status has been associated with cognitive changes in some research, particularly among older adults. However, memory problems can also result from poor sleep, stress, medications, vitamin B12 deficiency and other medical conditions.

Does alcohol increase the risk of folate deficiency?

Chronic heavy alcohol use can increase the risk of folate deficiency because alcohol can interfere with folate absorption and metabolism. Poor overall nutrition associated with heavy drinking may further increase the risk.

What foods are high in folate?

Good sources include spinach and other leafy greens, beans, lentils, black-eyed peas, asparagus, avocado, oranges, nuts and fortified breakfast cereals. Eating a variety of these foods can help provide adequate folate.

How much folate do adults need?

Most adults need about 400 micrograms of dietary folate equivalents (DFE) per day. Nutritional requirements increase during pregnancy and breastfeeding.

Is folate the same as folic acid?

They are related but aren’t exactly the same. Folate is the general term for vitamin B9 and includes forms naturally present in food, while folic acid is a form used in supplements and fortified foods.

Should I take folic acid if I’m always tired?

Not automatically. Fatigue can result from many different causes, including sleep problems, anemia, iron deficiency, vitamin B12 deficiency and other medical conditions. If tiredness is persistent, speak with a healthcare professional before starting a high-dose supplement.

When should I get tested for folate deficiency?

If you’re experiencing persistent unexplained fatigue, weakness, headaches or other concerning symptoms, discuss them with your healthcare provider. They can determine whether folate testing or other blood tests are appropriate.

Medical Disclaimer

The information provided in this article is for general educational and informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease, medical condition, or health problem, and it should not be considered a substitute for professional medical advice, diagnosis, or treatment.

Nutritional deficiencies and symptoms such as fatigue, headaches, weakness, or changes in memory can have many possible causes. Do not use the information in this article to self-diagnose or start, stop, or change any medication or supplement without speaking with a qualified healthcare professional.

If you have persistent, severe, or worsening symptoms, or if you have an existing medical condition, are pregnant, are planning a pregnancy, or regularly consume alcohol, consult your doctor or another qualified healthcare professional for personalized advice and appropriate testing.

The Health Dose makes reasonable efforts to provide accurate and up-to-date health information, but medical knowledge can change over time. Always consult a qualified healthcare professional for advice specific to your individual health needs.