Articles
Evidence-based health guidance from our clinical team.
7 Pelvic Symptoms Not to Ignore
Pelvic symptoms are common, but persistent or unusual changes should never be dismissed. Here are seven pelvic symptoms clinicians recommend investigating if they persist or worsen.
AMH and Ovarian Reserve
AMH is one of the first blood tests people hear about when thinking about fertility. A calmer way to think about AMH is as one useful piece of information that can help build a picture of ovarian reserve.
Can Blood Tests Improve Sports Performance?
Training is only one part of performance. Recovery, nutrition, sleep, iron status, vitamin D and overall health all play a role in how well the body adapts to exercise.
Cholesterol & Lipids: Understanding Cardiovascular Risk
Cholesterol is a fatty substance essential for many biological processes. However, imbalances in cholesterol and lipid levels can increase the risk of cardiovascular disease.
The Cocoon Health Pyramid
At Cocoon, we believe better health decisions start with understanding the body first. The Cocoon Health Pyramid illustrates a more thoughtful approach -- one that builds health from the foundation upward.
Cortisol: Understanding the Body's Stress Hormone
Cortisol is a hormone produced by the adrenal glands that plays a central role in the body's response to stress. It also helps regulate metabolism, immune function and energy balance.
CRP: A Marker of Inflammation in the Body
C-reactive protein (CRP) is produced by the liver in response to inflammation. Elevated CRP levels can indicate the presence of inflammation in the body.
Ferritin: The Hidden Marker Behind Fatigue and Low Energy
Ferritin measures the body's stored iron levels and is one of the most important markers when investigating fatigue. Ferritin testing can identify iron deficiency long before anaemia develops.
Fibroids, Cysts or Hormones?
Pelvic symptoms such as pain, bloating or heavy periods are extremely common, but the causes can vary widely. Understanding the most common underlying conditions can help guide investigation and treatment.
Folate: A Vital Nutrient for Cellular Health and Pregnancy
Folate, also known as Vitamin B9, plays a crucial role in DNA synthesis, cell division and red blood cell formation. It is particularly important during periods of rapid growth, such as pregnancy.
The Cocoon Guide to Blood Testing
Healthcare is often something we turn to when something feels wrong. But there is another way to think about health — one that focuses less on reacting to problems and more on understanding the body before those problems appear.
HbA1c: A Key Indicator of Blood Sugar Control
HbA1c is a blood marker that reflects average blood glucose levels over the previous two to three months. It is widely used to screen for diabetes and prediabetes.
Hidden Signs of Hormone Imbalance
Hormones influence almost every system in the body. Because hormone levels fluctuate naturally throughout life, many symptoms of hormonal imbalance are easy to overlook or attribute to stress, lifestyle or ageing.
How Often Should You Actually Get Blood Tests?
There is no single rule that suits everyone. The right testing frequency depends on why you are testing in the first place: baseline reassurance, monitoring a known deficiency, tracking progress, or checking specific markers.
How to Read Your Blood Test Results
Making sense of your health markers. With a little context, blood test results become far easier to understand — they are simply signals from your biology.
Kidney Function: eGFR and Creatinine
The kidneys filter waste products from the blood and maintain fluid and electrolyte balance. Creatinine and eGFR are key markers used to assess kidney function.
Liver Function: ALT and AST
The liver performs hundreds of essential functions, including detoxification, metabolism and nutrient storage. Markers such as ALT and AST help assess liver health.
Pelvic Ultrasound: Symptoms Women Shouldn't Ignore and Why It's a Key First-Line Investigation
Many women dismiss pelvic pain, bloating and cycle changes as normal. Understanding when a pelvic ultrasound is needed can help identify conditions early and guide appropriate care.
Progesterone
Progesterone is one of the most important hormones in reproductive health. At its core, progesterone is a hormone that rises after ovulation and helps prepare the lining of the womb for implantation.
"Too Young" Can Be a Dangerous Assumption When It Comes to Prostate Cancer
Prostate cancer is often described as an older man's disease. But 'mostly older men' does not mean 'only older men.' When it comes to cancer detection, assumptions about age can sometimes delay important conversations.
Safe Scanning
For many parents, a pregnancy scan is one of the most anticipated moments of early pregnancy. But while these moments can feel magical, ultrasound scans are also an important medical assessment, and the expertise of the person performing the scan matters enormously.
Finger-Prick vs Venous Blood Tests: What Patients Should Know
Blood testing has become an increasingly popular way for people to understand their health. There are important differences between finger-prick and venous blood collection in how samples are collected, how reliable they are, and what information they can provide.
The Silent Symptoms of Ovarian Cancer Most Women Don't Recognise
Ovarian cancer is sometimes called the 'silent' cancer, but in reality it does often produce symptoms. The challenge is that those symptoms are usually subtle, vague, and easily mistaken for common digestive or hormonal issues.
Testosterone: A Key Hormone for Energy, Strength and Wellbeing
Testosterone is a hormone that plays an important role in many aspects of health, particularly in relation to energy levels, muscle strength, mood and reproductive health.
The Cocoon Health Score Explained
A clearer way to understand your health markers. The Cocoon Health Score brings key health markers together into a single, easy-to-interpret overview.
The Hidden Health Markers Linked to Fertility
Fertility is often spoken about in very narrow terms, but in reality it sits within wider whole-body health. Hormones matter, of course, but so do nutrient status, thyroid function and general wellbeing.
The Most Common Nutrient Deficiencies in the UK
Some nutrient deficiencies remain very common in the UK — particularly where lifestyle, diet, health conditions, absorption issues or limited sun exposure affect the body's ability to maintain healthy levels.
The Supplements Problem
Supplements can be useful, but they are often marketed as though more is automatically better. Testing first can be a more grounded approach to understanding what your body actually needs.
Thyroid Function: The Hormones That Regulate Your Metabolism
The thyroid gland produces hormones that regulate metabolism, energy production and body temperature. Testing thyroid markers provides insight into whether the thyroid is functioning normally.
Vitamin B12: The Nutrient Essential for Energy, Brain Health and Red Blood Cells
Vitamin B12 is an essential nutrient that plays a crucial role in energy production, neurological health and the formation of red blood cells. B12 deficiency is surprisingly common.
Vitamin D: The Deficiency Affecting Millions — And Why Testing Matters
Vitamin D deficiency is one of the most common nutritional deficiencies in the world — yet many people have no idea their levels are low. Testing Vitamin D levels through a simple blood test can provide valuable insight into your health.
When to Consider a Well Woman Scan
Many women live with symptoms for months or even years before seeking answers. A Well Woman ultrasound can provide valuable insight into the health of the uterus, ovaries and surrounding pelvic structures.
What Blood Tests Should I Get?
A calm guide to choosing the right health tests for you. The answer depends on why you are testing in the first place — symptoms, reassurance, or a clearer baseline.
What Happens to Your Hormones in Your 30s and 40s?
Hormones are not static. They shift across life, and the changes that happen in your 30s and 40s can influence mood, sleep, energy, cycle regularity, body composition and overall wellbeing.
What Your Biomarkers Say About Your Future Health
Biomarkers are not fortune tellers. But they can be early signals — showing what is happening beneath the surface before everything is obvious externally.
What Your Blood Test Can Reveal About Metabolic Health
Metabolic health is about far more than weight. It relates to how your body manages energy, regulates blood sugar, processes fats and supports cardiovascular wellbeing over time.
Why Baseline Health Testing Matters
Rather than waiting for symptoms to appear, baseline testing gives you a clear snapshot of where things stand now — your nutrient levels, metabolic markers, hormone patterns and other useful indicators.
Why Do I Feel Tired All the Time?
Understanding the biological causes of persistent fatigue. Fatigue is a symptom, not a diagnosis — a blood test can help provide the missing clarity.
Why Finger-Prick Tests Can Miss Important Health Signals
At-home testing has made health information more accessible, but different collection methods are not identical. Sample quality, stability and volume can affect how confidently results can be interpreted.
Why Men Often Delay Health Checks
Men's health is increasingly recognised as an area where earlier engagement could make a meaningful difference. A proactive health check can be valuable because it makes it easier to spot what might need attention.
The 5 Health Checks Every Woman Should Consider Before 40
Proactive health isn't about worrying earlier -- it's about understanding your body sooner. Many health conditions that affect women develop gradually, and proactive health checks can help provide a clearer picture of your baseline health.
Why So Many Women's Health Conditions Go Undiagnosed for Years
Many women spend years living with symptoms before receiving clear answers. Understanding why this happens and how earlier investigation can help is an important step toward improving women's health.