Magnesium and Acne: What the Research Says

Could magnesium be relevant to acne-prone skin?

Magnesium is often discussed in relation to energy, muscle function, stress and sleep. It is therefore understandable that people also wonder whether increasing their magnesium intake could improve acne.

The answer is not as simple as saying magnesium clears acne.

Unlike nutrients such as zinc, vitamin D and omega-3 fatty acids, magnesium has not been extensively studied as a direct acne treatment. Most of the available evidence examines magnesium in relation to inflammation, insulin resistance, energy metabolism and wider health rather than acne outcomes specifically.

Magnesium may still be relevant for some people because acne can be influenced by stress, sleep, inflammation, blood sugar regulation, hormones, diet and overall nutrient intake. However, this does not mean that low magnesium directly causes acne or that supplementation will improve everyone’s skin.

This guide explains what magnesium does, how it may relate indirectly to acne, which foods contain it, when supplements may require additional care and why acne should be considered within the wider health picture.

What Is Magnesium?

Magnesium is an essential mineral required for hundreds of biochemical reactions throughout the body.

A large proportion of the body’s magnesium is stored in the bones, with the remainder found mainly inside cells and soft tissues. Only a small amount circulates in the blood, which can make magnesium status difficult to assess using symptoms alone.

Magnesium contributes to:

• Normal energy-yielding metabolism
• Normal nervous-system function
• Normal muscle function
• Normal psychological function
• Maintenance of normal bones and teeth
• Normal protein synthesis
• Normal electrolyte balance
• Reduction of tiredness and fatigue

Because acne may be influenced by stress, inflammation, sleep and metabolic health, magnesium may be worth considering as part of the wider picture. However, these potential connections are indirect and should not be confused with evidence that magnesium directly treats acne.

Why Might Magnesium Be Relevant to Acne?

Magnesium may relate to acne indirectly through several pathways rather than by acting as a specific acne treatment.

What Does the Research Say About Magnesium and Acne?

Direct evidence investigating magnesium supplementation as an acne treatment is limited.

Current research mainly examines magnesium in relation to broader processes that may be relevant to acne, including systemic inflammation, oxidative stress and insulin resistance.

One observational study found that higher magnesium intake was associated with lower markers of systemic inflammation and insulin resistance. However, observational findings cannot prove that magnesium was responsible for these differences or that increasing magnesium intake would improve acne (Kim et al., 2010).

A systematic review also discussed the potential role of magnesium in oxidative stress and inflammatory regulation. The authors highlighted possible biological mechanisms but also noted the need for further high-quality clinical trials (Cepeda et al., 2025).

Acne itself is recognised as a chronic inflammatory disorder of the pilosebaceous unit. Its development involves follicular blockage, sebum production, microbial activity and inflammatory responses (Sutaria, Masood and Schlessinger, 2023).

However, evidence showing that inflammation is involved in acne does not demonstrate that magnesium supplements will reduce acne lesions.

Can Low Magnesium Contribute to Acne?

Low magnesium intake could contribute to wider health issues that may indirectly affect the skin, but it has not been established as a direct cause of acne.

Acne may be influenced by:

• Genetics
• Hormonal changes
• Sebum production
• Blocked hair follicles
• Inflammation
• Skincare products
• Medication
• Stress and sleep
• Dietary patterns
• Wider nutrient intake

Features such as fatigue, muscle tension, poor sleep or cravings are sometimes associated with magnesium in online health content. However, these symptoms are non-specific and may also be related to stress, inadequate sleep, medication, iron deficiency, thyroid conditions, insufficient food intake or many other factors.

Symptoms alone therefore cannot diagnose magnesium deficiency.

Which Foods Contain Magnesium?

Most people should aim to obtain magnesium through a varied and balanced diet. Magnesium is found in many plant foods, including nuts, seeds, legumes, wholegrains and leafy vegetables (NHS, 2025).

How to Increase Magnesium Through Food

A food-first approach can improve magnesium intake while also providing fibre, protein, healthy fats and other nutrients relevant to general health.

Should You Take Magnesium Supplements for Acne?

There is currently insufficient evidence to recommend magnesium supplements specifically as an acne treatment.

Supplements may be appropriate in some circumstances, but the decision should be based on dietary intake, medical history, medication use and individual need rather than acne alone.

The NHS states that taking 400 mg or less of magnesium per day from supplements is unlikely to cause harm for most adults. Higher supplemental intakes may cause diarrhoea and can be harmful (NHS, 2025).

This guidance applies to magnesium obtained from supplements. Magnesium naturally present in food is not included in the supplemental limit.

Common Forms of Magnesium

Magnesium supplements are available in several forms. The amount of elemental magnesium, absorption, tolerance and effect on bowel habits can vary between products.

If you are comparing products, read Which Magnesium Should I Buy?.

Magnesium, Stress and Acne

Stress is one reason magnesium is often discussed in relation to acne.

Ongoing stress may influence:

• Sleep quality
• Eating habits
• Food cravings
• Inflammatory signalling
• Skin-picking behaviour
• Adherence to skincare routines
• Hormone-related symptoms

Magnesium contributes to normal nervous-system and psychological function, but a magnesium supplement does not remove the source of stress and should not be presented as a treatment for anxiety, chronic stress or mental-health conditions.

A wider approach may include regular meals, sufficient sleep, movement, relaxation practices, psychological support and appropriate medical care.

Read more in Stress and Acne.

Magnesium and Hormonal Acne

Magnesium may be relevant to someone with hormone-related acne because it is involved in normal energy metabolism and glucose regulation. However, magnesium supplementation has not been shown to correct the hormonal causes of acne.

Hormonal acne may be influenced by:

• Androgen activity
• Menstrual-cycle changes
• PCOS
• Blood sugar regulation
• Stress
• Sleep
• Genetics
• Medication

If your acne appears around the chin or jawline or worsens before your period, read Foods for Hormonal Acne.

If acne appears alongside irregular periods, excess facial or body hair or thinning scalp hair, read Acne and PCOS.

Could Gut Health Affect Magnesium Status?

Magnesium is absorbed through the digestive tract. Certain gastrointestinal conditions, persistent diarrhoea and some medications may affect magnesium absorption or increase losses.

However, common symptoms such as bloating, constipation, reflux or food sensitivity do not automatically mean magnesium is being poorly absorbed.

Persistent diarrhoea, unexplained weight loss, blood in the stool, ongoing abdominal pain or other concerning digestive symptoms should be discussed with a GP.

The gut and skin may interact through immune, microbial and inflammatory pathways, although this does not mean all acne originates in the gut.

Read more in Can Gut Health Cause Acne? and The Gut-Skin Axis.

Magnesium Is Only One Piece of the Acne Puzzle

Magnesium supports many normal functions within the body, but acne is rarely explained by one nutrient alone.

For some people, a low-magnesium diet may form part of a wider pattern of limited or unbalanced eating. For others, more significant acne contributors may include:

• Hormonal changes
• Genetic susceptibility
• Sebum production
• Skincare products
• Medication
• Stress and sleep
• Dietary patterns
• Other nutrient gaps
• Underlying medical conditions

You may also find these guides helpful:

• Is Zinc Good for Acne?
• Vitamin D and Acne
• Omega-3 and Acne
• Foods That May Trigger Acne
• How to Get Rid of Acne
• Acne Treatments and Skincare

When to Speak to Your GP

Magnesium-rich foods can form part of a balanced diet, but supplements and nutrition changes should not replace appropriate medical acne care.

Speak to your GP, pharmacist or another appropriate healthcare professional if:

• Your acne is painful, nodular, cystic or scarring
• Your acne is affecting your confidence or emotional wellbeing
• Your acne started suddenly or changed significantly
• You have kidney disease
• You experience persistent diarrhoea or vomiting
• You have unexplained weight loss
• You take prescription medication
• You have previously been diagnosed with low magnesium
• You are pregnant or breastfeeding and are considering supplementation

What This Means for You

Magnesium may be worth considering if your diet contains few nuts, seeds, legumes, leafy vegetables or wholegrains.

However, the question is not simply:

Should I take magnesium for acne?

A more useful question is:

Does my overall diet provide enough magnesium and other essential nutrients?

Begin by reviewing your food intake, meal regularity, sleep, stress levels and wider acne pattern.

Adding magnesium-rich foods may improve overall diet quality, but supplements should be considered more carefully. Check current medicines and existing supplements, and seek professional advice where kidney disease, pregnancy, digestive symptoms or medication interactions are relevant.

Frequently Asked Questions

Final Thoughts

Magnesium is an important mineral involved in energy metabolism, nerve function, muscle function and wider health.

Research has explored magnesium in relation to inflammation and insulin resistance, but direct evidence showing that magnesium supplements improve acne remains limited (Kim et al., 2010; Cepeda et al., 2025).

Magnesium should therefore be viewed as one possible part of the wider nutrition picture rather than an acne cure.

A food-first approach is usually the most appropriate place to begin. Nuts, seeds, legumes, leafy vegetables and wholegrains provide magnesium alongside many other useful nutrients.

If your acne is persistent, painful, scarring or linked with wider symptoms, consider the bigger picture and seek appropriate medical or nutritional support rather than relying on one supplement.