Jace health guides
Clear health information, without the noise.
Practical, evidence-led guides to help you understand health concerns, compare your options and know when to speak with a healthcare professional.
Start with the question
We explain the available options—and when a different clinical pathway may make more sense.
Put advice in context
Health decisions depend on your symptoms, priorities, medical history and individual circumstances.
Use trusted guidance
Our guides are grounded in sources including NHS, NICE and UK professional bodies.
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Explore our latest guides.
Blood testing basicsHormone healthNutrition and metabolismWeight managementSexual healthDriver medicalsWorkplace healthMedical transportHealth assessments
Blood testing basics 6 min read
How to prepare for a blood test
Clear, practical preparation advice—from fasting and medication to hydration and appointment-day nerves.
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Blood testing basics 7 min read
Choosing the right private blood test
How to choose a focused test that answers a real question—not simply the panel with the most markers.
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Blood testing basics 6 min read
How often should you have a blood test?
There is no universal testing timetable. Here is what should determine when repeating a blood test is worthwhile.
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Hormone health 8 min read
Female hormone testing: what blood tests can tell you
Hormone results depend on the question, the menstrual cycle and medication. Learn what testing can—and cannot—show.
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Hormone health 7 min read
Menopause blood tests: when are they useful?
Menopause is often identified from age, cycle changes and symptoms—not a hormone panel. Here is when testing can help.
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Hormone health 8 min read
PCOS and blood tests: what to expect
Blood tests can support a PCOS assessment, but diagnosis depends on symptoms, history and sometimes imaging too.
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Hormone health 8 min read
Testosterone and male hormone testing
A reliable testosterone assessment is more than one number: symptoms, morning timing and repeat confirmation all matter.
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Nutrition and metabolism 8 min read
Blood tests for nutritional deficiencies
Fatigue does not automatically mean a vitamin deficiency. Targeted testing should reflect symptoms, diet and risk.
Read guideNutrition and metabolism 6 min read
Vitamin D testing: who may benefit?
Vitamin D testing is useful in selected situations, but national guidance does not recommend routine testing for everyone.
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Nutrition and metabolism 7 min read
Blood tests for diabetes and blood sugar
Understand how HbA1c and blood glucose tests are used for risk assessment, diagnosis and ongoing monitoring.
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Weight management 8 min read
Wegovy vs Mounjaro: what is the difference?
Understand how the two weekly weight-management injections differ—and why the right choice requires an individual clinical review.
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Sexual health 7 min read
How soon after sex should you get an STI test?
Testing too early can miss an infection. Learn the common testing windows—and when symptoms or a recent exposure should not wait.
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Driver medicals 7 min read
D4 and DLM1 driver medicals: what to expect
Which form do you need, what will be checked and what should you bring to an HGV or bus driver medical?
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Workplace health 8 min read
Health surveillance at work: an employer’s guide
A practical introduction to risk-led workplace health surveillance, competent delivery, confidentiality and employer responsibilities.
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Medical transport 8 min read
Medical repatriation: how does it work?
What families and case managers need to know when arranging a medically supported journey home from another country.
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Health assessments 7 min read
What does a body composition analysis measure?
A body-composition reading can show more than weight—but hydration, preparation and trends all affect what the numbers mean.
Read guideImportant health information
These guides provide general information and do not diagnose a condition or replace individual medical advice. If symptoms are severe, worsening or urgent, use the appropriate NHS or emergency service.
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