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.

What Will Testogel Do? Benefits, Effects and Safety Guide

Testosterone

min read

What Will Testogel Do? Benefits, Effects and Safety Guide

Discover what Testogel does for men with testosterone deficiency. Learn how this transdermal gel works, expected benefits, timeline of effects, potential side effects, monitoring requirements, and essential safety precautions for testosterone replacement therapy in the UK.

Barley Grass Vitamin K Content: Clinical Guidance

Supplements

min read

Barley Grass Vitamin K Content: Clinical Guidance

Discover the vitamin K content in barley grass supplements and why it matters for medication safety. Essential guidance for patients on anticoagulants and healthcare professionals managing supplement interactions.

Roles of Fatty Acids: Essential Functions in Human Health

Supplements

min read

Roles of Fatty Acids: Essential Functions in Human Health

Discover the essential roles of fatty acids in human health, from energy provision and cell membrane structure to inflammation regulation and brain function. Learn about omega-3, omega-6, and saturated fats, their dietary sources, and NHS guidance on optimising your fat intake for cardiovascular and metabolic health.

Can You Only Lose Weight in a Calorie Deficit? Evidence Explained

Weight Loss

min read

Can You Only Lose Weight in a Calorie Deficit? Evidence Explained

Can you only lose weight in a calorie deficit? Yes — find out why every effective diet works through energy balance, what the evidence says, and when to see your GP.

Can Type 2 Patients Have a Deceptively Low HbA1c?

Weight Loss

min read

Can Type 2 Patients Have a Deceptively Low HbA1c?

Can type 2 patients have a deceptively low HbA1c? Yes — anaemia, kidney disease, and certain medicines can falsely lower results. Learn the causes, risks, and what tests to request.

Will Probiotics Cause Loose Stools? Side Effects Explained

Supplements

min read

Will Probiotics Cause Loose Stools? Side Effects Explained

Will probiotics cause loose stools? Discover why probiotics may temporarily affect bowel habits, how long side effects last, when to seek medical advice, and practical tips to minimise digestive upset during supplementation.

Hair Loss

min read

Does Tacrolimus Cause Hair Loss? Evidence, Risks & Management

Does tacrolimus cause hair loss? Learn what UK prescribing guidance says, how common it is, what else may be contributing, and when to speak to your GP or transplant team.

Wegovy

min read

Wegovy Leg Cramps: Causes, Management and When to Seek Help

Can Wegovy cause leg cramps? Discover why muscle cramping may occur during semaglutide treatment, how to manage symptoms, and when to seek medical advice for safe weight management.

Adiponectin and Visceral Fat: Risks, Assessment, and Lifestyle Solutions

Weight Loss

min read

Adiponectin and Visceral Fat: Risks, Assessment, and Lifestyle Solutions

Adiponectin and visceral fat have a critical inverse relationship linked to type 2 diabetes and heart disease. Learn how visceral fat suppresses adiponectin, what the health risks are, and how lifestyle changes can help — with UK NHS and NICE guidance.

Are Wheat Thins Good for Fatty Liver? Evidence-Based Guidance

Weight Loss

min read

Are Wheat Thins Good for Fatty Liver? Evidence-Based Guidance

Are Wheat Thins good for fatty liver? Discover why these popular crackers may not support hepatic health, plus evidence-based snack alternatives and dietary strategies for managing NAFLD effectively.

Vitamin D in Oily Fish: Sources, Amounts and Benefits

Supplements

min read

Vitamin D in Oily Fish: Sources, Amounts and Benefits

Discover how vitamin D in oily fish can help meet your daily requirements. Learn which species contain the most, how much you need, and who should prioritise oily fish for optimal vitamin D intake in the UK.

Can You Have Gastric Sleeve Surgery Twice? UK Revision Options Explained

Weight Loss

min read

Can You Have Gastric Sleeve Surgery Twice? UK Revision Options Explained

Can you have gastric sleeve surgery twice? Learn when revision bariatric surgery is possible, what procedures are available after a failed sleeve, and how to access NHS or private care in the UK.

Ozempic After Gastric Bypass: Safety, Effectiveness and NHS Guidance

GLP-1 Brands

min read

Ozempic After Gastric Bypass: Safety, Effectiveness and NHS Guidance

Can you take Ozempic after gastric bypass surgery? Discover when semaglutide may be prescribed post-bariatric surgery, safety considerations, NHS guidance, and what patients need to know about combining GLP-1 therapy with gastric bypass.

Hair Loss

min read

Can Pomade Cause Hair Loss? Evidence, Risks and Safe Use

Can pomade cause hair loss? Learn how pomade affects your scalp and follicles, what the evidence says, how to spot product-related thinning, and how to use pomade safely — with UK clinical guidance.

Hair and Eyebrow Loss: Causes, NHS Tests, and UK Treatments

Hair Loss

min read

Hair and Eyebrow Loss: Causes, NHS Tests, and UK Treatments

Hair and eyebrow loss explained: causes, NHS tests, UK-licensed treatments including JAK inhibitors, and when to see a GP or dermatologist. Evidence-based guidance in plain English.

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

What Will Testogel Do? Benefits, Effects and Safety Guide

Barley Grass Vitamin K Content: Clinical Guidance

Roles of Fatty Acids: Essential Functions in Human Health

Can You Only Lose Weight in a Calorie Deficit? Evidence Explained

Can Type 2 Patients Have a Deceptively Low HbA1c?

Will Probiotics Cause Loose Stools? Side Effects Explained

Does Tacrolimus Cause Hair Loss? Evidence, Risks & Management

Wegovy Leg Cramps: Causes, Management and When to Seek Help

Adiponectin and Visceral Fat: Risks, Assessment, and Lifestyle Solutions

Are Wheat Thins Good for Fatty Liver? Evidence-Based Guidance

Vitamin D in Oily Fish: Sources, Amounts and Benefits

Can You Have Gastric Sleeve Surgery Twice? UK Revision Options Explained

Ozempic After Gastric Bypass: Safety, Effectiveness and NHS Guidance

Can Pomade Cause Hair Loss? Evidence, Risks and Safe Use

Hair and Eyebrow Loss: Causes, NHS Tests, and UK Treatments