Bolt Guides

Expert insights on weight loss and more.

Featured

Wegovy

min read

Wegovy Pill UK: Approval, Eligibility, Dosing and Safety

The Wegovy pill (oral semaglutide) is now MHRA-approved in the UK. Who can take it, the dosing schedule, how to take it, and how it compares with the injection.

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Weight loss

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Weight Loss

min read

Weight Loss Pills and Alcohol: Risks, Interactions and UK Guidance

How alcohol interacts with UK weight loss medications including Wegovy, the oral Wegovy pill, Mysimba and orlistat: key risks and when to seek advice.

Bio-Rad HPLC HbA1c Testing: NHS Laboratory Guide and NICE Guidance

Weight Loss

min read

Bio-Rad HPLC HbA1c Testing: NHS Laboratory Guide and NICE Guidance

Bio-Rad HPLC HbA1c testing explained: how ion-exchange chromatography works, NHS laboratory use, NICE diagnostic thresholds, haemoglobin variant interference, and MHRA compliance guidance.

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

Weight Loss

min read

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

Gastric sleeve surgery explained: how sleeve gastrectomy works, NHS eligibility criteria, what to expect before and after surgery, risks, and long-term outcomes. Evidence-based UK guidance.

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GLP-1 Brands

Read all on GLP-1 brands

Wegovy

Answer all your questions about Wegovy treatments for weight loss.

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Mounjaro

Answer all your questions about Mounjaro treatments for weight loss.

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GLP-1 Brands

min read

Rybelsus for Weight Loss: Evidence, Safety, and UK Prescribing Guidance

Is Rybelsus a good weight loss pill? How oral semaglutide compares to the new Wegovy pill (25 mg), the evidence, side effects, and UK prescribing guidance.

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Rybelsus for Weight Loss: Evidence, Safety, and UK Prescribing Guidance

Retatrutide Bacteriostatic Water Reconstitution: UK Safety Guide

GLP-1 Brands

min read

Retatrutide Bacteriostatic Water Reconstitution: UK Safety Guide

How much bacteriostatic water to mix with retatrutide — understand reconstitution principles, UK regulatory status, safety risks, and when to seek medical advice before use.

Retatrutide in Pill Form: What UK Patients Need to Know

GLP-1 Brands

min read

Retatrutide in Pill Form: What UK Patients Need to Know

Can you get retatrutide in pill form? Find out why no oral version exists yet, how peptide medicines work, and which licensed weight loss treatments are available in the UK right now.

How to Eat on Retatrutide: UK Dietary and Safety Guide

GLP-1 Brands

min read

How to Eat on Retatrutide: UK Dietary and Safety Guide

How to eat on retatrutide: expert UK dietary guidance covering meal patterns, foods to prioritise, managing nausea, and staying well-nourished during treatment. Read now.

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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

Erectile Dysfunction

min read

Does Rybelsus Cause Erectile Dysfunction?

Rybelsus is not listed as a cause of erectile dysfunction. Explore the UK evidence on semaglutide and sexual health, and how to manage ED with diabetes.

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Testosterone

min read

Does Testosterone Treatment Cause Hunger? UK Guide to TRT and Appetite

Does testosterone treatment cause hunger? Discover how TRT may influence appetite, the mechanisms involved, and practical strategies to manage hunger changes during testosterone therapy in the UK.

Can Testogel Make You Lethargic? Causes and Management

Testosterone

min read

Can Testogel Make You Lethargic? Causes and Management

Can Testogel make you feel tired? Discover why testosterone replacement therapy may cause lethargy, key warning signs to watch for, and evidence-based strategies to manage fatigue during TRT in the UK.

Testosterone

min read

Can Testosterone Treatments Cause Swollen Feet? UK Guide

Can testosterone treatments cause swollen feet? Discover how TRT affects fluid retention, when to seek medical advice, management strategies, and alternative causes of peripheral oedema during testosterone therapy.

Gynaecomastia & Tummy Tuck: Combined Surgery Guide

Weight Loss

min read

Gynaecomastia & Tummy Tuck: Combined Surgery Guide

Considering combined gynaecomastia and tummy tuck surgery? Explore NHS eligibility, costs, risks, and recovery in this UK patient guide.

Supplements

min read

B12 vs B Complex: Which Vitamin Supplement Should You Take?

B12 vs B complex: understand the key differences, when to take each supplement, and which is right for your health needs. Expert UK guidance on vitamin B supplementation, deficiency risks, and safe use.

Obesity Causes, Treatment and BMI: Complete UK Guide

Weight Loss

min read

Obesity Causes, Treatment and BMI: Complete UK Guide

Comprehensive guide to obesity causes, treatment and BMI in the UK. Learn how obesity is diagnosed, what causes it, health risks, and NHS treatment options including lifestyle changes, medication and surgery.

Gila Monster Venom and GLP-1: From Discovery to Diabetes Treatment

Weight Loss

min read

Gila Monster Venom and GLP-1: From Discovery to Diabetes Treatment

Discover how Gila monster venom and GLP-1 led to breakthrough diabetes treatments. Learn about exendin-4, modern GLP-1 medications, NHS access, clinical benefits, and safety considerations in UK practice.

Where to Inject Trulicity: UK Injection Site Guide

GLP-1 Brands

min read

Where to Inject Trulicity: UK Injection Site Guide

Discover safe Trulicity injection sites, rotation techniques and tips for comfortable, effective type 2 diabetes treatment in the UK.

Ozempic Left Out Overnight: Safety, Storage and What to Do

GLP-1 Brands

min read

Ozempic Left Out Overnight: Safety, Storage and What to Do

Ozempic left out overnight? Discover whether your semaglutide pen is still safe to use, how temperature affects medication potency, and what steps to take next. Expert UK guidance on proper storage, when to discard, and how to protect your diabetes treatment.

Is There an Age Limit for Bariatric Surgery? UK Eligibility Explained

Weight Loss

min read

Is There an Age Limit for Bariatric Surgery? UK Eligibility Explained

Is there an age limit for bariatric surgery in the UK? NICE sets no fixed cut-off — find out how age, BMI, and health conditions affect your eligibility for NHS weight loss surgery.

Vitamin K Deficiency Bleeding: Causes & Prevention

Supplements

min read

Vitamin K Deficiency Bleeding: Causes & Prevention

Learn what causes VKDB in newborns, how to recognise warning signs, and why vitamin K prophylaxis at birth is recommended by NHS guidelines.

How Fast Can You Lose Weight on a Calorie Deficit? NHS-Aligned Guide

Weight Loss

min read

How Fast Can You Lose Weight on a Calorie Deficit? NHS-Aligned Guide

How fast can you lose weight on a calorie deficit? Discover safe, realistic weekly targets, NHS and NICE guidance, and key factors that affect your rate of weight loss.

Why Does Sildenafil Cause Nasal Congestion? Causes and Management

Erectile Dysfunction

min read

Why Does Sildenafil Cause Nasal Congestion? Causes and Management

Discover why sildenafil causes nasal congestion, how common this side effect is, and practical ways to manage it. Expert guidance on when to seek medical advice and alternative treatment options.

Is Psyllium Husk Good for Fatty Liver? UK Evidence and Guidance

Weight Loss

min read

Is Psyllium Husk Good for Fatty Liver? UK Evidence and Guidance

Is psyllium husk good for fatty liver? Explore the evidence, mechanisms, and safe use of ispaghula husk for NAFLD, plus UK guidance on dietary management and when to seek specialist advice.

Does Gynaecomastia Surgery Leave Scars? UK Guide to Healing

Weight Loss

min read

Does Gynaecomastia Surgery Leave Scars? UK Guide to Healing

Does gynaecomastia surgery leave scars? Find out where scars are placed, how they heal over time, and the best scar management options recommended by UK plastic surgeons.

Can Levothyroxine Cause Fatty Liver? Evidence and Guidance

Weight Loss

min read

Can Levothyroxine Cause Fatty Liver? Evidence and Guidance

Can levothyroxine cause fatty liver disease? Discover the evidence on levothyroxine and liver health, understand the thyroid-liver connection, and learn when to seek medical advice about NAFLD whilst taking thyroid medication.

Cabbage Vitamin K Content and Warfarin Interactions Explained

Supplements

min read

Cabbage Vitamin K Content and Warfarin Interactions Explained

Discover how cabbage vitamin K content affects warfarin and anticoagulant medications. Expert guidance on safe consumption, dietary consistency, and managing vitamin K intake for stable blood clotting control.

Missed Period on Ozempic: Causes, Hormonal Effects and When to Seek Help

GLP-1 Brands

min read

Missed Period on Ozempic: Causes, Hormonal Effects and When to Seek Help

Missed period on Ozempic? Discover whether semaglutide directly affects menstrual cycles, how weight loss influences hormones, when to seek medical advice, and practical management strategies for menstrual changes during treatment.

Bolt Guides

Featured

Wegovy Pill UK: Approval, Eligibility, Dosing and Safety

Weight loss

Weight Loss Pills and Alcohol: Risks, Interactions and UK Guidance

Bio-Rad HPLC HbA1c Testing: NHS Laboratory Guide and NICE Guidance

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

GLP-1 Brands

Wegovy

Mounjaro

Rybelsus for Weight Loss: Evidence, Safety, and UK Prescribing Guidance

Retatrutide Bacteriostatic Water Reconstitution: UK Safety Guide

Retatrutide in Pill Form: What UK Patients Need to Know

How to Eat on Retatrutide: UK Dietary and Safety Guide

Men’s Health

Testosterone

Erectile dysfunction

Does Rybelsus Cause Erectile Dysfunction?

Does Testosterone Treatment Cause Hunger? UK Guide to TRT and Appetite

Can Testogel Make You Lethargic? Causes and Management

Can Testosterone Treatments Cause Swollen Feet? UK Guide

Browse all

Gynaecomastia & Tummy Tuck: Combined Surgery Guide

B12 vs B Complex: Which Vitamin Supplement Should You Take?

Obesity Causes, Treatment and BMI: Complete UK Guide

Gila Monster Venom and GLP-1: From Discovery to Diabetes Treatment

Where to Inject Trulicity: UK Injection Site Guide

Ozempic Left Out Overnight: Safety, Storage and What to Do

Is There an Age Limit for Bariatric Surgery? UK Eligibility Explained

Vitamin K Deficiency Bleeding: Causes & Prevention

How Fast Can You Lose Weight on a Calorie Deficit? NHS-Aligned Guide

Why Does Sildenafil Cause Nasal Congestion? Causes and Management

Is Psyllium Husk Good for Fatty Liver? UK Evidence and Guidance

Does Gynaecomastia Surgery Leave Scars? UK Guide to Healing

Can Levothyroxine Cause Fatty Liver? Evidence and Guidance

Cabbage Vitamin K Content and Warfarin Interactions Explained

Missed Period on Ozempic: Causes, Hormonal Effects and When to Seek Help