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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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.

Bayer DCA HbA1c Waived Testing: UK Clinical Guide

Weight Loss

min read

Bayer DCA HbA1c Waived Testing: UK Clinical Guide

Bayer DCA HbA1c waived testing explained for UK clinicians — how the Siemens DCA Vantage works, CLIA waived status, UK regulatory requirements, operator training, and NICE-aligned result interpretation.

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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

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.

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Retatrutide Bacteriostatic Water Reconstitution: UK Safety Guide

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.

Retatrutide Results: How Long Before You See Weight Loss?

GLP-1 Brands

min read

Retatrutide Results: How Long Before You See Weight Loss?

How long to see results from retatrutide? Phase 2 trial data show meaningful weight loss from months 3–6, with results continuing at 48 weeks. Learn about the timeline, influencing factors, and UK regulatory status.

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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

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.

Collagen Peptides & Whey Protein Powder: Benefits & Safety

Supplements

min read

Collagen Peptides & Whey Protein Powder: Benefits & Safety

Discover how collagen peptides and whey protein work together to support muscle and connective tissue, plus key tips before you buy.

Berberine and Visceral Fat: Evidence, Safety, and UK Guidance

Weight Loss

min read

Berberine and Visceral Fat: Evidence, Safety, and UK Guidance

Berberine and visceral fat: discover how this natural alkaloid may help reduce abdominal adiposity, how it works, UK safety guidance, drug interactions, and lifestyle strategies to support metabolic health.

Hair Loss

min read

Could Low Iron Cause Hair Loss? Symptoms, Diagnosis and Treatment

Could low iron cause hair loss? Learn how iron deficiency affects hair follicles, how it's diagnosed on the NHS, treatment options, and when to see your GP about hair thinning.

Alpha Lipoic Acid and HbA1c: Evidence, Safety, and UK Guidance

Weight Loss

min read

Alpha Lipoic Acid and HbA1c: Evidence, Safety, and UK Guidance

Alpha lipoic acid and HbA1c: explore the clinical evidence, UK safety guidance, recommended doses, drug interactions, and what NICE and the NHS say about ALA supplementation in diabetes.

Berberine for Insulin Resistance: UK Guide

Supplements

min read

Berberine for Insulin Resistance: UK Guide

Explore how berberine may support insulin sensitivity, its mechanisms, clinical evidence, dosing and UK safety guidance for metabolic health.

Best Allergy Medication for Ragweed: UK Treatment Guide

Supplements

min read

Best Allergy Medication for Ragweed: UK Treatment Guide

Best allergy medication for ragweed in the UK — compare antihistamines, nasal sprays, and combination treatments. Backed by NICE, BSACI, and MHRA guidance. Find out what works and when to see a GP.

Feeling Cold on Retatrutide: Causes, Management, and When to Seek Help

GLP-1 Brands

min read

Feeling Cold on Retatrutide: Causes, Management, and When to Seek Help

Feeling cold on retatrutide? Learn why this happens, how common it is in clinical trials, when to seek medical advice, and practical tips to manage cold sensations safely.

Hypothalamic Obesity: New Treatments and Specialist Management

Weight Loss

min read

Hypothalamic Obesity: New Treatments and Specialist Management

Discover new treatments for hypothalamic obesity caused by brain damage. Learn about emerging therapies, GLP-1 agonists, specialist management, and how to access expert care for this rare, treatment-resistant condition.

Best Vegetables for Fatty Liver: Evidence-Based Dietary Guidance

Weight Loss

min read

Best Vegetables for Fatty Liver: Evidence-Based Dietary Guidance

Discover the best vegetables for fatty liver disease and how they support liver health. Evidence-based guidance on cruciferous greens, leafy vegetables, and practical meal planning to reduce liver fat naturally through sustainable dietary changes.

Hair Loss

min read

How to Hide Hair Loss: UK Guide to Concealment and Treatment

How to hide hair loss with hairstyling tips, concealers, wigs, and scalp micropigmentation — plus NHS-recommended treatments and when to see your GP. Read our UK guide.

Testosterone

min read

What Health Condition Would Keep You From Testosterone Treatment?

What health condition would keep you from testosterone treatment? Discover which medical conditions—including prostate cancer, heart disease, and blood disorders—contraindicate TRT, plus essential safety guidance for UK patients.

Wegovy

min read

What Is the Best Time of Day to Take Wegovy?

What is the best time of day to take Wegovy? Discover evidence-based guidance on injection timing, how to maintain consistency, manage side effects, and ensure optimal adherence to your weekly semaglutide schedule for weight management.

Bruise After Injection in Stomach: Causes & Prevention

GLP-1 Brands

min read

Bruise After Injection in Stomach: Causes & Prevention

Why Ozempic and GLP-1 injections cause bruising at the injection site, how to prevent it with proper technique, and when to seek medical advice.

Can You Eat Grits After Gastric Sleeve Surgery? A UK Guide

Weight Loss

min read

Can You Eat Grits After Gastric Sleeve Surgery? A UK Guide

Can you eat grits after gastric sleeve surgery? Find out when grits are safe to introduce, how to prepare them for each dietary stage, and how to boost their nutritional value for bariatric recovery.

Incretin-Based Therapies for Obesity Treatment: UK Guide

Weight Loss

min read

Incretin-Based Therapies for Obesity Treatment: UK Guide

Discover how incretin-based therapies for obesity treatment work, including GLP-1 receptor agonists like semaglutide and liraglutide. Learn about NICE eligibility criteria, expected weight loss outcomes, side effects, and how to access these medications through the NHS for effective, long-term weight management.

Bolt Guides

Featured

Wegovy Pill UK: Approval, Eligibility, Dosing and Safety

Weight loss

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

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

Bayer DCA HbA1c Waived Testing: UK Clinical Guide

GLP-1 Brands

Wegovy

Mounjaro

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

Retatrutide Results: How Long Before You See Weight Loss?

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

Collagen Peptides & Whey Protein Powder: Benefits & Safety

Berberine and Visceral Fat: Evidence, Safety, and UK Guidance

Could Low Iron Cause Hair Loss? Symptoms, Diagnosis and Treatment

Alpha Lipoic Acid and HbA1c: Evidence, Safety, and UK Guidance

Berberine for Insulin Resistance: UK Guide

Best Allergy Medication for Ragweed: UK Treatment Guide

Feeling Cold on Retatrutide: Causes, Management, and When to Seek Help

Hypothalamic Obesity: New Treatments and Specialist Management

Best Vegetables for Fatty Liver: Evidence-Based Dietary Guidance

How to Hide Hair Loss: UK Guide to Concealment and Treatment

What Health Condition Would Keep You From Testosterone Treatment?

What Is the Best Time of Day to Take Wegovy?

Bruise After Injection in Stomach: Causes & Prevention

Can You Eat Grits After Gastric Sleeve Surgery? A UK Guide

Incretin-Based Therapies for Obesity Treatment: UK Guide

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