Acne Case Study

Acne Case Study

Table of Contents

🌿 VitaminBeth Client Case Study
⏱️ Estimated reading time: 7–9 minutes 👩‍⚕️ Reviewed by Beth Mulvey, Registered Nutritional Therapist

Acne Case Study: How One Client Improved Persistent Jawline and Neck Acne by Addressing the Root Cause

Client details have been kept general to protect privacy. This case study is shared for educational purposes and individual results can vary.

Acne is often viewed as a skin problem, but in many cases, the skin can be a reflection of what is happening internally. Recently, I worked with a young male client who had been struggling with persistent acne around his jawline, chin, and neck. Despite using skincare products, maintaining good hygiene, and generally taking care of himself, the breakouts continued and were beginning to affect his confidence and social life. Rather than focusing solely on treating the symptoms, we took a root-cause approach to understand why his skin was struggling in the first place.

💡 In Plain English

This client’s acne was not simply treated as a skin issue. We looked at the wider pattern, including gut health, inflammation, nutrient status, hormone function, digestion, energy and lifestyle.

✅ Client Snapshot

  • Young male client with persistent jawline, chin and neck acne.
  • Breakouts continued despite skincare and good hygiene.
  • Previous history of SIBO.
  • Blood testing showed low vitamin D and signs of inflammation.
  • Main goals included clearer skin, better digestion, improved energy and reduced inflammation.

The Client’s Main Goals

When we first started working together, his goals were:
  • Clearer skin and fewer breakouts
  • Better gut health and digestion
  • Improved energy levels
  • Better hormonal balance
  • Reduced inflammation throughout the body

The Case Study Timeline

🔎 Step 1: Initial Assessment

We reviewed his acne pattern, health history, digestion, energy, lifestyle and previous SIBO diagnosis.

🧪 Step 2: Blood Test Review

We reviewed comprehensive blood test results to look for clues beneath the surface.

🦠 Step 3: Gut Health Focus

Because of his SIBO history and digestive symptoms, gut health became a key part of the plan.

🥗 Step 4: Personalised Nutrition

We focused on skin-supportive foods, fibre, antioxidants, omega-3 fats, hydration and meal quality.

🧘 Step 5: Lifestyle Support

We reviewed stress, sleep, recovery, hydration and everyday exposure to potential hormone disruptors.

✨ Step 6: 12-Week Outcome

Over the following weeks, his skin, digestion, energy, sleep and confidence improved.

Looking Beyond the Skin

As part of his personalised nutrition programme, we reviewed comprehensive blood test results. While the results did not show any major medical concerns, they did reveal several imbalances that could have been contributing to his symptoms.

☀️ Low Vitamin D

Vitamin D status may be relevant because of its role in immune function, inflammation regulation and skin health.

⚖️ Hormone Function

The results suggested suboptimal testosterone function and possible issues with hormone production and utilisation.

🔥 Inflammation

There were signs of increased inflammation, which may have been contributing to persistent breakouts.

🧬 Detoxification Support

Some blood markers suggested the body’s natural detoxification processes may have required additional nutritional support.

🦠 Gut Function

There were indicators that gut dysfunction may have been affecting nutrient absorption and inflammation.
These findings helped explain why his skin was not responding despite his efforts. Emerging research has also suggested that vitamin D status may play a role in inflammatory skin conditions such as acne.

🔬 Research Snapshot

Research has explored the relationship between vitamin D and acne, with some studies suggesting vitamin D status may be relevant in inflammatory acne. This does not mean vitamin D is the only answer, but it can be one useful piece of the wider picture.
If you would like to understand this area in more detail, read Vitamin D and Acne: What the Research Says.

Understanding the Gut-Skin Connection

One of the most significant findings from the client’s health history was a previous diagnosis of Small Intestinal Bacterial Overgrowth, also known as SIBO. Although he had received treatment in the past, digestive symptoms and blood markers suggested that his gut health still required support. This is important because the gut and skin are closely connected through what is often referred to as the gut-skin axis, a bidirectional relationship involving the immune system, gut microbiome, and inflammatory pathways. When the gut microbiome becomes imbalanced, it can contribute to:
  • Increased inflammation throughout the body
  • Poor nutrient absorption
  • Hormonal imbalances
  • Reduced efficiency in the body’s natural detoxification processes
  • Increased stress on the immune system
All of these factors can influence skin health and may contribute to persistent acne. For this client, we believed that his previous history of SIBO, combined with signs of inflammation and hormonal dysfunction, was playing a significant role in his ongoing breakouts.

💡 In Plain English

His skin was not improving because the issue may not have been only on the skin. His gut history, inflammation markers and nutrient status gave us clues that his acne may have been part of a wider internal pattern.
You can read more about this in Can Gut Health Cause Acne? and The Gut-Skin Axis.

Addressing the Foundations of Health

Rather than simply treating the acne itself, we focused on restoring the foundations of health by supporting the gut, improving digestion, reducing inflammation, and helping the body function more efficiently.

The Personalised Nutrition Strategy

Instead of relying on restrictive diets or quick fixes, we focused on supporting the body through nutrition and lifestyle changes.

🥦 Skin-Supportive Foods

We increased foods known to support hormone balance, detoxification, and skin health, including broccoli, kale, Brussels sprouts, spinach, colourful fruits and vegetables, oily fish, avocado, olive oil, nuts, seeds and daily green smoothies.

🦠 Gut Health Support

Improving digestive health was a major priority. We focused on increasing fibre intake, introducing beneficial bacteria through probiotics, improving meal quality and supporting a healthier gut microbiome.

🔥 Inflammation Support

To help calm inflammation throughout the body, we introduced spearmint tea, green tea, omega-3 rich foods, improved hydration and daily ginger and lemon water.

♻️ Hormone Disruptor Reduction

We reviewed everyday products and reduced exposure to potential hormone-disrupting chemicals by replacing plastic water bottles, choosing cleaner skincare products and reviewing household products where appropriate.

🧘 Stress and Recovery

We introduced daily mindfulness practices, breathing exercises, better sleep habits and recovery-focused lifestyle strategies.
If you are interested in food and acne, you may also find Foods for Hormonal Acne and Foods That May Trigger Acne useful.

Why Gut Health Was a Key Focus

Because of his history of SIBO, gut health became a key focus of the programme. We worked on increasing microbial diversity, supporting digestion, improving bowel regularity, reducing inflammatory triggers, and creating an environment that supported a healthier balance of gut bacteria. As gut function improved, we began to see positive changes not only in digestion but also in skin clarity, energy levels, and overall wellbeing. If you are interested in this area, you may also find it helpful to read more about the link between gut health and skin health, or explore Beth’s Complete Gut Repair 3-Month Programme.
This case is a good example of why I do not look at acne in isolation. The skin can give us clues, but the real question is often what is happening underneath the surface.

Beth Mulvey, Registered Nutritional Therapist

The Results

Over the following weeks, the client began noticing significant improvements.

✅ Key Outcomes After 12 Weeks

  • Fewer inflammatory breakouts
  • Reduced congestion around the jawline and neck
  • Less redness and irritation
  • Improved digestion
  • Better energy levels
  • Improved sleep quality
  • Greater resilience to stress
  • Increased confidence
Most importantly, he began to understand what his body needed to function at its best, rather than constantly fighting the symptoms. Acne 3-month skin therapy results showing improvement in jawline and neck acne

Client result after personalised nutrition and lifestyle support. Individual results vary.

Client Feedback

I would recommend Beth to absolutely anybody, I was very down with my skin and didn’t think we would be able to heal it naturally and she did. We did a hormone blood test and got to the root cause and she was amazing. My skin has cleared and I am so much happier with life!

VitaminBeth Client

The Takeaway

This case highlights an important message: Skin issues are often a symptom, not the root cause. While skincare products can be helpful, persistent acne frequently has deeper drivers such as inflammation, gut imbalances, nutrient deficiencies, stress, hormone dysfunction, or reduced efficiency in the body’s natural detoxification processes. By addressing these underlying factors through personalised nutrition and lifestyle support, we were able to create meaningful improvements not only in this client’s skin but also in his overall health and wellbeing. If you’re struggling with stubborn acne, digestive issues, hormonal symptoms, or unexplained inflammation, looking beneath the surface may be the key to finding long-term results.

💡 In Plain English

The goal was not just to suppress breakouts. The goal was to understand what may have been driving them, then support the body in a way that improved the skin and the wider health picture.

What This Means For You

If your acne keeps returning despite skincare, good hygiene or trying different products, it may be worth looking deeper. Acne can be influenced by gut health, inflammation, hormones, blood sugar balance, nutrient status, stress, sleep and lifestyle. For some people, personalised support can help identify which of these areas are most relevant. For a broader starting point, read How to Get Rid of Acne. If your acne feels hormone-related, you may also find Acne and PCOS helpful.

Ready to Get to the Root Cause?

As a Nutritional Therapist specialising in gut health, skin health, and hormone balance, I help clients uncover the underlying causes of their symptoms and create personalised plans that support lasting change. If you’re struggling with stubborn acne, digestive issues, hormonal symptoms, or unexplained inflammation, you don’t have to navigate it alone. If you’d like to explore whether nutritional therapy could support your journey towards clearer skin, improved digestion, and better overall wellbeing, I’d love to hear from you.

Learn more about the Skin Therapy Programme

📚 Continue Your Acne Learning

You’re reading one of VitaminBeth’s acne case studies. Visit the Acne Resource Centre to explore our evidence-informed articles on acne causes, hormones, gut health, nutrition, lifestyle and personalised support in one place.

References

  1. Lim, S.K. et al. (2016) ‘Comparison of Vitamin D Levels in Patients with and without Acne: A Case-Control Study Combined with a Randomized Controlled Trial’, PLOS ONE, 11(8). Available at: https://pubmed.ncbi.nlm.nih.gov/27560161/
  2. Mahmud, M.R. et al. (2022) ‘Impact of gut microbiome on skin health: gut-skin axis observed through the lenses of therapeutics and skin diseases’, Gut Microbes, 14(1). Available at: https://pubmed.ncbi.nlm.nih.gov/35866234/

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