Bolt Guides

Expert insights on weight loss and more.

Featured

Lipo C With Retatrutide: UK Safety, Evidence, and Regulatory Guidance

GLP-1 Brands

min read

Lipo C With Retatrutide: UK Safety, Evidence, and Regulatory Guidance

Lipo C with retatrutide: understand what these unlicensed and investigational treatments are, how they are used in weight management, key safety risks, and UK regulatory guidance before considering either therapy.

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Weight loss

Read all on weight loss

Abnormal HbA1c ICD-10 Codes: UK Clinical Guide and NHS Thresholds

Weight Loss

min read

Abnormal HbA1c ICD-10 Codes: UK Clinical Guide and NHS Thresholds

Abnormal HbA1c ICD-10 codes explained for UK clinical practice — covering R73.0, R73.9, NHS diagnostic thresholds, NICE guidance, and when to refer. Read our full clinical guide.

Comparison of Blood Glucose, HbA1c and Fructosamine: NHS Guide

Weight Loss

min read

Comparison of Blood Glucose, HbA1c and Fructosamine: NHS Guide

Comparison of blood glucose, HbA1c, and fructosamine explained — discover how each test works, when it's used in NHS practice, their limitations, and how to understand your results.

Lap Band Gastric Banding System: NHS Eligibility, Risks and Alternatives

Weight Loss

min read

Lap Band Gastric Banding System: NHS Eligibility, Risks and Alternatives

Lap band gastric banding system explained: how LAGB works, NHS eligibility criteria, risks, diet after surgery, and UK alternatives including sleeve gastrectomy and gastric bypass.

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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

Lipo C With Retatrutide: UK Safety, Evidence, and Regulatory Guidance

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Retatrutide: Can Anyone Take It and Is It Available in the UK?

GLP-1 Brands

min read

Retatrutide: Can Anyone Take It and Is It Available in the UK?

Can anyone take retatrutide? Find out who may be eligible, who should avoid it, its current UK regulatory status, potential side effects, and how to speak to your GP about obesity treatment options.

1 Month Retatrutide Results: Clinical Evidence and Realistic Expectations

GLP-1 Brands

min read

1 Month Retatrutide Results: Clinical Evidence and Realistic Expectations

1 month retatrutide results explained: what Phase 2 trial data shows about early weight loss, common side effects, realistic expectations, and UK regulatory status in 2025.

Retatrutide Fridge Storage: What You Need to Know

GLP-1 Brands

min read

Retatrutide Fridge Storage: What You Need to Know

Retatrutide storage in the fridge explained: why no confirmed shelf-life exists yet, correct refrigeration conditions, signs of degradation, and what to do if the product is left out of the fridge.

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Men’s Health

Testosterone

Answer all your questions about testosterone.

Read testosterone guides

Erectile dysfunction

Answer all your questions about erectile dysfunction.

Read erectile dysfunction guides

Can Cialis Cause Gynaecomastia? Tadalafil Side Effects Explained

Erectile Dysfunction

min read

Can Cialis Cause Gynaecomastia? Tadalafil Side Effects Explained

Can Cialis cause gynaecomastia? Learn what the MHRA-approved evidence says about tadalafil and breast tissue changes, known side effects, and when to see a GP.

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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.

Testosterone

min read

Testosterone Booster for Gynaecomastia: Evidence, Risks and UK Treatment Options

Testosterone booster for gynaecomastia — does it work? Explore the evidence, safety risks, MHRA and NHS guidance, and clinically recognised UK treatment options for enlarged male breast tissue.

Testosterone

min read

Calorie Deficit Effect on Testosterone: What the Evidence Shows

Calorie deficit effect on testosterone explained — learn how energy restriction affects hormone levels, warning signs to watch for, and evidence-based steps to protect testosterone while losing weight safely.

Alcohol and Type 2 Diabetes: Safe Drinking Guidelines and Risks

Weight Loss

min read

Alcohol and Type 2 Diabetes: Safe Drinking Guidelines and Risks

Discover how alcohol affects blood sugar in type 2 diabetes, safe drinking guidelines, hypoglycaemia risks, and practical strategies to manage alcohol consumption safely with diabetes medicines and monitoring.

Retatrutide and Joint Pain: Evidence, Risks, and UK Guidance

GLP-1 Brands

min read

Retatrutide and Joint Pain: Evidence, Risks, and UK Guidance

Retatrutide and joint pain explained: what clinical evidence shows, who is at risk, how to manage musculoskeletal symptoms, and when to seek medical advice in the UK.

Erectile Dysfunction

min read

Does Fish Oil Cause Erectile Dysfunction? Evidence and Facts

Does fish oil cause erectile dysfunction? Discover what clinical evidence reveals about omega-3 supplements and sexual health, including when to seek medical advice for ED and how fish oil may actually affect vascular function.

Erectile Dysfunction

min read

Does Radiation for Prostate Cancer Cause Erectile Dysfunction?

Does radiation for prostate cancer cause erectile dysfunction? Discover how radiotherapy affects sexual function, who's at risk, and evidence-based treatments available on the NHS to manage ED after prostate cancer treatment.

What Blood Tube for HbA1c? UK Guide to Correct Sample Collection

Weight Loss

min read

What Blood Tube for HbA1c? UK Guide to Correct Sample Collection

What blood tube for HbA1c? In the UK, the K2EDTA (purple cap) tube is the standard. Learn why it matters, how to collect and store samples correctly, and how to avoid common errors.

Hair Loss

min read

Revita Hair Loss Shampoo: Ingredients, Evidence, and Safe Use

Revita hair loss shampoo reviewed: discover how it works, the evidence behind key ingredients like ketoconazole and caffeine, safe usage tips, and when to see a GP.

Does GLP-1 Increase Resting Heart Rate? UK Clinical Evidence

Weight Loss

min read

Does GLP-1 Increase Resting Heart Rate? UK Clinical Evidence

Does GLP-1 increase resting heart rate? Discover what clinical evidence shows about modest heart rate changes with GLP-1 receptor agonists, their cardiovascular safety profile, and when to seek medical advice. UK guidance included.

Retatrutide and Bowel Changes: Causes, Management, and When to Seek Help

GLP-1 Brands

min read

Retatrutide and Bowel Changes: Causes, Management, and When to Seek Help

Retatrutide making you poop more or causing constipation? Learn why this investigational GLP-1 triple agonist affects bowel habits, how long symptoms last, and when to seek medical advice.

Zinc and L-Carnosine: Clinical Evidence, Dosage and Safety Guide

Supplements

min read

Zinc and L-Carnosine: Clinical Evidence, Dosage and Safety Guide

Discover how zinc and L-carnosine works for gastric health, evidence-based dosage guidance, potential side effects, and what to consider before supplementing. Expert UK clinical review.

Can You Use Testogel for a Cycle? UK Safety and Legal Guide

Testosterone

min read

Can You Use Testogel for a Cycle? UK Safety and Legal Guide

Can you use Testogel for a cycle? Discover why using Testogel for bodybuilding or performance enhancement is unsafe, illegal, and medically inappropriate. Learn about approved uses, serious health risks, and UK legal implications.

Is CoQ10 Safe? Side Effects, Interactions and Dosage Guidance

Supplements

min read

Is CoQ10 Safe? Side Effects, Interactions and Dosage Guidance

Is CoQ10 safe? Discover who can safely take CoQ10, potential side effects, drug interactions with warfarin and statins, recommended dosages, and when to seek medical advice before supplementation.

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.

Should You Rotate Allergy Medication? What the Evidence Says

Supplements

min read

Should You Rotate Allergy Medication? What the Evidence Says

Should you rotate allergy medication to stop it losing effectiveness? Discover what the clinical evidence, NICE guidance, and NHS advice say about antihistamine rotation and how to manage allergy symptoms safely.

Is Celery Juice Good for Fatty Liver? Evidence and Alternatives

Weight Loss

min read

Is Celery Juice Good for Fatty Liver? Evidence and Alternatives

Is celery juice good for fatty liver? Discover what the evidence really shows about celery juice for NAFLD, plus proven dietary and lifestyle strategies that actually support liver health in the UK.

Testosterone

min read

Is Testogel Synthetic? Understanding Bioidentical Testosterone

Is Testogel synthetic? Discover how Testogel's bioidentical testosterone is made, how it works in the body, and why synthetic doesn't mean less safe or effective. UK medical guidance explained.

Bolt Guides

Featured

Lipo C With Retatrutide: UK Safety, Evidence, and Regulatory Guidance

Weight loss

Abnormal HbA1c ICD-10 Codes: UK Clinical Guide and NHS Thresholds

Comparison of Blood Glucose, HbA1c and Fructosamine: NHS Guide

Lap Band Gastric Banding System: NHS Eligibility, Risks and Alternatives

GLP-1 Brands

Wegovy

Mounjaro

Lipo C With Retatrutide: UK Safety, Evidence, and Regulatory Guidance

Retatrutide: Can Anyone Take It and Is It Available in the UK?

1 Month Retatrutide Results: Clinical Evidence and Realistic Expectations

Retatrutide Fridge Storage: What You Need to Know

Men’s Health

Testosterone

Erectile dysfunction

Can Cialis Cause Gynaecomastia? Tadalafil Side Effects Explained

Can Testosterone Cause Gynaecomastia? Symptoms, Risks & NHS Treatment

Testosterone Booster for Gynaecomastia: Evidence, Risks and UK Treatment Options

Calorie Deficit Effect on Testosterone: What the Evidence Shows

Browse all

Alcohol and Type 2 Diabetes: Safe Drinking Guidelines and Risks

Retatrutide and Joint Pain: Evidence, Risks, and UK Guidance

Does Fish Oil Cause Erectile Dysfunction? Evidence and Facts

Does Radiation for Prostate Cancer Cause Erectile Dysfunction?

What Blood Tube for HbA1c? UK Guide to Correct Sample Collection

Revita Hair Loss Shampoo: Ingredients, Evidence, and Safe Use

Does GLP-1 Increase Resting Heart Rate? UK Clinical Evidence

Retatrutide and Bowel Changes: Causes, Management, and When to Seek Help

Zinc and L-Carnosine: Clinical Evidence, Dosage and Safety Guide

Can You Use Testogel for a Cycle? UK Safety and Legal Guide

Is CoQ10 Safe? Side Effects, Interactions and Dosage Guidance

Does Walking Help with Erectile Dysfunction? Evidence and Guidance

Should You Rotate Allergy Medication? What the Evidence Says

Is Celery Juice Good for Fatty Liver? Evidence and Alternatives

Is Testogel Synthetic? Understanding Bioidentical Testosterone

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