Vitamin and Mineral Deficiencies That Cause Fatigue in Men

You can blame a late night for a day or two. But when you are sleeping reasonably well and still feel drained, it is worth looking beyond coffee. A nutrient deficiency may be part of the picture, but it is not the only explanation. The useful question is not, “Which vitamin gives me energy?” It is, “Why am I tired, and what evidence would show the cause?”

Why vitamins and minerals matter for energy

Food supplies energy, while vitamins and minerals help the body release and use it, produce healthy blood cells and support nerves and muscles. Important roles include:

• Cellular energy metabolism: Several B vitamins help enzymes release energy from food.

• Oxygen transport: Iron is needed to make haemoglobin, which carries oxygen in the blood.

• Nerve and muscle function: Vitamin B12 and magnesium support normal nervous-system and muscle function.

• Red blood-cell formation: Vitamin B12, folate and iron are all involved in producing healthy red blood cells.

Can vitamin and mineral deficiencies really cause fatigue?

Yes, but fatigue is a symptom rather than a diagnosis. The NHS and the National Institutes of Health describe tiredness or weakness among the possible features of several deficiencies. The same symptoms can also occur with sleep apnoea, thyroid disease, diabetes, depression, infection and many other conditions. Blood tests and a medical history help separate these possibilities.

Common vitamin and mineral deficiencies linked with fatigue

Vitamin B12 deficiency

Vitamin B12 is needed for normal red blood-cell formation and nervous-system function. Deficiency can cause fatigue, weakness, pins and needles, balance problems, memory changes or a sore tongue. Neurological symptoms can occur even when anaemia is not obvious.

Risk is higher in people following vegan diets without reliable fortified foods or supplements, older adults, and people with pernicious anaemia, coeliac disease, Crohn’s disease or previous stomach or intestinal surgery.

Food sources include meat, fish, eggs, dairy and fortified foods.

Vitamin D deficiency

Vitamin D supports normal bone and muscle function. Deficiency may be associated with muscle weakness, aches or fatigue, although many people have no obvious symptoms. Risk can be higher with limited sun exposure, darker skin, covering most of the skin, malabsorption or certain medical conditions. A blood test is needed when deficiency is suspected.

Food sources are limited and include oily fish, egg yolk and fortified foods. Supplements should follow individual advice and the product label.

Iron deficiency

Iron is needed to make haemoglobin. Once iron deficiency progresses to anaemia, reduced oxygen-carrying capacity can cause fatigue, breathlessness, headaches and reduced exercise tolerance. Some people report symptoms before anaemia develops, but testing is needed to confirm the cause.

Iron deficiency is less common in adult men than in menstruating women. The British Society of Gastroenterology recommends investigating confirmed iron-deficiency anaemia in men because gastrointestinal blood loss or another underlying condition may be responsible. Do not start iron simply because you feel tired.

Folate deficiency

Folate is required for normal red blood-cell production. Deficiency can lead to megaloblastic anaemia, which may cause tiredness, weakness or breathlessness. Causes include low intake, alcohol misuse, malabsorption, increased requirements and some medicines.

Food sources include dark green vegetables, beans, peas, peanuts, fruit and fortified foods.

Magnesium deficiency

Magnesium is involved in normal muscle, nerve and energy metabolism. A true deficiency can cause weakness, fatigue, cramps or abnormal heart rhythms, but it is a less common explanation for persistent tiredness than iron, vitamin B12 or folate deficiency. Risk rises with certain gastrointestinal conditions, long-term alcohol misuse, poorly controlled diabetes and some medicines.

Food sources include nuts, seeds, pulses, whole grains and leafy green vegetables.

What about zinc?

Zinc supports immune function, wound healing and protein synthesis. Deficiency can affect appetite, taste, wound healing and immunity, but the evidence linking mild zinc deficiency with everyday fatigue is less direct. Do not use zinc as a general energy supplement without a reason.

These vitamin and mineral deficiencies can produce overlapping symptoms, so tiredness alone cannot identify which nutrient is low.

Food and supplements

Can food provide enough?

For many men, a varied diet is the best starting point. Include vegetables, fruit, pulses, whole grains, protein foods, dairy or suitable alternatives, nuts and seeds. Diet alone may not correct every deficiency, particularly when absorption is poor or levels are significantly low. Treatment should match the cause.

Should men take a multivitamin?

A multivitamin does not cancel out a restricted diet or fix fatigue caused by poor sleep or illness. It may help cover routine dietary gaps when meals are inconsistent, but it is not an energy booster for someone who already gets enough nutrients.

Support daily nutrition

Aora Nutrivit Plus provides 19 essential nutrients and grape seed extract to complement everyday micronutrient intake when meals are inconsistent. It should complement food rather than replace it and is not intended to treat persistent fatigue or a diagnosed deficiency.

Supplements may help address vitamin and mineral deficiencies or genuine dietary gaps when these have been identified, but they should not be used to guess the cause of persistent fatigue.

When should you get tested?

Speak to a doctor if fatigue lasts for several weeks, keeps worsening or affects normal daily activities. Medical assessment is especially important when tiredness occurs with:

• Numbness, pins and needles, balance problems or memory changes

• Unexplained weight loss

• Breathlessness, chest pain or a racing heartbeat

• Blood in the stool or black, tarry stools

• Persistent fever, night sweats or other new symptoms

• Severe weakness or difficulty completing everyday tasks

The tests required depend on the history and symptoms. They may include a complete blood count, ferritin, vitamin B12, folate, thyroid tests, glucose testing or other investigations chosen by the clinician. Testing can help establish whether vitamin and mineral deficiencies are contributing or whether another cause needs investigation.

Related Reads

• 7 Best Foods to Eat After 50 for Strength and Healthy Ageing

• Do You Need a Zinc Supplement? Benefits, Foods and Signs

Medical Disclaimer: This article is for general educational purposes only and should not replace professional medical advice, diagnosis or treatment. Persistent, severe or unexplained fatigue, or fatigue with neurological symptoms, breathlessness, chest pain, bleeding or marked weakness, needs medical assessment. Do not start high-dose supplements solely on the basis of tiredness.