Bolt Guides

When can you eat salad after gastric sleeve surgery? Find out the recommended timeline, safest ingredients, foods to avoid, and expert NHS-aligned tips for reintroducing raw foods comfortably.

Weight Loss

min read

Gastric Sleeve Weight Loss Calculator: Results, Eligibility & Recovery Planning

Use a gastric sleeve weight loss calculator to estimate your results after sleeve gastrectomy. Learn how these tools work, NHS eligibility criteria, and expert recovery planning advice.

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GLP-1 Brands

Read all on GLP-1 brands

Wegovy

Answer all your questions about Wegovy treatments for weight loss.

Read Wegovy guides

Mounjaro

Answer all your questions about Mounjaro treatments for weight loss.

Read Mounjaro guides

GLP-1 Brands

min read

How Long Does Rybelsus Stay in Your System?

How long does Rybelsus stay in your system? Discover the elimination timeline, factors affecting clearance, and what happens when you stop taking this type 2 diabetes medication.

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What Is Ozempic Personality? Mood Changes and Semaglutide

GLP-1 Brands

min read

What Is Ozempic Personality? Mood Changes and Semaglutide

What is Ozempic personality? Explore reported mood and behavioural changes with semaglutide, the scientific evidence, and when to speak to your GP about side effects whilst taking Ozempic for type 2 diabetes.

What Does Trulicity Do to Your Body? Effects Explained

GLP-1 Brands

min read

What Does Trulicity Do to Your Body? Effects Explained

Discover what Trulicity does to your body, including how this GLP-1 receptor agonist lowers blood sugar, affects weight and appetite, and impacts long-term health in type 2 diabetes management.

Saxenda & Blood Donation: UK Eligibility Guide

GLP-1 Brands

min read

Saxenda & Blood Donation: UK Eligibility Guide

Taking Saxenda and want to give blood? Learn UK eligibility rules from NHSBT, what liraglutide means for donors, and when to seek advice before donating.

Read all on GLP-1 brands

Men’s Health

Testosterone

Answer all your questions about testosterone.

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Erectile dysfunction

Answer all your questions about erectile dysfunction.

Read erectile dysfunction guides

Trans Women & Erectile Function: UK Guide

Erectile Dysfunction

min read

Trans Women & Erectile Function: UK Guide

Learn how hormone therapy affects erections in trans women, whether Viagra is suitable, and what support is available through the NHS.

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Testosterone

min read

How Often Should Testosterone Be Checked When Using Testogel?

Find out how often testosterone levels should be checked when using Testogel. Learn about UK monitoring schedules, blood tests, safety checks, and signs your dose may need adjusting under NHS guidelines.

Where to Put Testogel for Women: Safe Application Sites

Testosterone

min read

Where to Put Testogel for Women: Safe Application Sites

Discover where to put Testogel safely if you're a woman prescribed this off-label testosterone therapy. Learn the recommended application sites, step-by-step technique, and essential safety precautions to optimise treatment and minimise risks.

Testosterone

min read

Can Testosterone Cause Gynaecomastia? Symptoms, Risks & NHS Treatment

Can testosterone cause gynaecomastia? Learn how testosterone converts to oestrogen, who is most at risk, how to spot symptoms, and what NHS treatment options are available.

Vitamin D Benefits for Men: What the Evidence Shows

Supplements

min read

Vitamin D Benefits for Men: What the Evidence Shows

Explore the key vitamin D benefits for men — from bone and muscle support to immune health. Includes UK guidance on dosage, sources, and year-round levels.

Does Fatty Liver Cause Eczema? Evidence and Management

Weight Loss

min read

Does Fatty Liver Cause Eczema? Evidence and Management

Does fatty liver cause eczema? Discover the medical evidence on whether fatty liver disease triggers eczema, explore the liver-skin connection, and learn how to manage both conditions safely with expert UK guidance.

Chlorella for Fatty Liver: Evidence, Safety and UK Guidance

Weight Loss

min read

Chlorella for Fatty Liver: Evidence, Safety and UK Guidance

Can chlorella help with fatty liver? Explore the evidence for chlorella in NAFLD, safe usage, potential side effects, drug interactions, and proven lifestyle treatments recommended by UK guidelines.

What Is Beetroot Extract Good For? Benefits and Safety

Supplements

min read

What Is Beetroot Extract Good For? Benefits and Safety

Discover what beetroot extract is good for, including blood pressure support, exercise performance, and heart health. Learn about the science, benefits, safety considerations, and who should avoid this popular nitrate-rich supplement.

Erectile Dysfunction

min read

Does Walking Help with Erectile Dysfunction? Evidence and Guidance

Discover how walking helps with erectile dysfunction through improved vascular health and blood flow. Learn evidence-based guidance on exercise duration, lifestyle changes, and when to seek medical advice for ED in the UK.

Whey Protein and Creatine Powder: Benefits, Dosing and Safety

Supplements

min read

Whey Protein and Creatine Powder: Benefits, Dosing and Safety

Discover how whey protein and creatine powder work together to support muscle growth, performance, and recovery. Evidence-based guidance on dosing, safety, side effects, and who should use these extensively researched sports supplements in the UK.

How Long Does Vitamin D Stay in Your System?

Supplements

min read

How Long Does Vitamin D Stay in Your System?

How long does vitamin D stay in your system? Discover the half-life, storage mechanisms, and factors affecting vitamin D duration in your body. Learn about NHS supplementation guidance and when to seek medical advice for deficiency.

Caudalie Resveratrol Lift vs Premier Cru: Expert Comparison Guide

Supplements

min read

Caudalie Resveratrol Lift vs Premier Cru: Expert Comparison Guide

Caudalie Resveratrol Lift vs Premier Cru: Compare ingredients, clinical evidence, suitability for different skin types, and value for money. Expert analysis to help you choose the right anti-ageing range for your needs.

Testosterone

min read

Does Testosterone Treatment Cause Blood Clots? UK Evidence & Safety

Does testosterone treatment cause blood clots? Discover the evidence on TRT and VTE risk, including mechanisms, risk factors, warning symptoms, and essential safety monitoring to reduce your thrombotic risk during testosterone therapy.

Does Fatty Liver Cause IBS? Understanding the Connection

Weight Loss

min read

Does Fatty Liver Cause IBS? Understanding the Connection

Does fatty liver cause IBS? Discover the relationship between fatty liver disease and irritable bowel syndrome, including shared risk factors, overlapping symptoms, and when to seek medical advice for digestive and liver health concerns.

Hair Loss

min read

Peripheral Artery Disease Hair Loss: Causes, Symptoms and NHS Treatment

Peripheral artery disease hair loss on the legs explained — discover why PAD causes leg hair thinning, what other symptoms to look for, when to see your GP, and how PAD is diagnosed and treated on the NHS.

Gaining Weight on Retatrutide: Causes, Solutions, and When to Seek Help

GLP-1 Brands

min read

Gaining Weight on Retatrutide: Causes, Solutions, and When to Seek Help

Gaining weight on retatrutide? Discover the most common clinical reasons — from fluid retention to metabolic adaptation — plus when to speak to your doctor and lifestyle tips to support treatment.

How to Get the Best Results from Tadalafil: Expert UK Guide

Erectile Dysfunction

min read

How to Get the Best Results from Tadalafil: Expert UK Guide

Discover how to get the best results from tadalafil with expert guidance on optimal dosing, timing, lifestyle factors, and common mistakes to avoid. Evidence-based advice for UK patients.

Calorie Deficit, Maintenance and Surplus: Your Complete Guide

Weight Loss

min read

Calorie Deficit, Maintenance and Surplus: Your Complete Guide

Calorie deficit, maintenance, and surplus explained — learn how to calculate your daily calorie needs, understand the health effects of each state, and follow NHS-aligned guidance for safe, sustainable energy balance.

Can You Make a Fatty Liver Healthy Again? Evidence-Based Guide

Weight Loss

min read

Can You Make a Fatty Liver Healthy Again? Evidence-Based Guide

Can you make a fatty liver healthy again? Discover how to reverse fatty liver disease through evidence-based lifestyle changes, NHS support, and medical management. Learn realistic timelines for liver healing and when to seek specialist care.

Bolt Guides

Featured

What Is RMR? Resting Metabolic Rate Explained

Weight loss

What Is RMR? Resting Metabolic Rate Explained

When Can I Eat Salad After Gastric Sleeve Surgery?

Gastric Sleeve Weight Loss Calculator: Results, Eligibility & Recovery Planning

GLP-1 Brands

Wegovy

Mounjaro

How Long Does Rybelsus Stay in Your System?

What Is Ozempic Personality? Mood Changes and Semaglutide

What Does Trulicity Do to Your Body? Effects Explained

Saxenda & Blood Donation: UK Eligibility Guide

Men’s Health

Testosterone

Erectile dysfunction

Trans Women & Erectile Function: UK Guide

How Often Should Testosterone Be Checked When Using Testogel?

Where to Put Testogel for Women: Safe Application Sites

Can Testosterone Cause Gynaecomastia? Symptoms, Risks & NHS Treatment

Browse all

Vitamin D Benefits for Men: What the Evidence Shows

Does Fatty Liver Cause Eczema? Evidence and Management

Chlorella for Fatty Liver: Evidence, Safety and UK Guidance

What Is Beetroot Extract Good For? Benefits and Safety

Does Walking Help with Erectile Dysfunction? Evidence and Guidance

Whey Protein and Creatine Powder: Benefits, Dosing and Safety

How Long Does Vitamin D Stay in Your System?

Caudalie Resveratrol Lift vs Premier Cru: Expert Comparison Guide

Does Testosterone Treatment Cause Blood Clots? UK Evidence & Safety

Does Fatty Liver Cause IBS? Understanding the Connection

Peripheral Artery Disease Hair Loss: Causes, Symptoms and NHS Treatment

Gaining Weight on Retatrutide: Causes, Solutions, and When to Seek Help

How to Get the Best Results from Tadalafil: Expert UK Guide

Calorie Deficit, Maintenance and Surplus: Your Complete Guide

Can You Make a Fatty Liver Healthy Again? Evidence-Based Guide

Personalized weight management for women