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

Read all on weight loss

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.

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Mounjaro

Answer all your questions about Mounjaro treatments for weight loss.

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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.

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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.

Diabetes and Gum Disease: HbA1c, Periodontitis, and Oral Health

Weight Loss

min read

Diabetes and Gum Disease: HbA1c, Periodontitis, and Oral Health

Diabetes and gum disease are closely linked through HbA1c and systemic inflammation. Learn how periodontitis affects blood sugar control, what NHS and NICE guidance recommends, and how to protect both your oral and metabolic health.

Does Tadalafil Raise Blood Sugar? Evidence and Guidance

Erectile Dysfunction

min read

Does Tadalafil Raise Blood Sugar? Evidence and Guidance

Does tadalafil raise blood sugar levels? Discover the evidence on tadalafil and blood glucose control, including safety guidance for people with diabetes and when to seek medical advice.

Hair Loss

min read

Do Hair Extensions Cause Hair Loss? Risks, Signs & Safe Use

Do hair extensions cause hair loss? Learn how extensions can trigger traction alopecia, which methods carry the highest risk, early warning signs to watch for, and expert-backed advice on safe use — aligned with NHS and UK dermatology guidance.

Supplements

min read

Fish Oil Supplements for Heart Health: Evidence and UK Guidance

Discover what the latest evidence reveals about fish oil supplements for heart health. Learn who may benefit, current UK guidance, dosage considerations, and evidence-based alternatives for cardiovascular protection.

Adenomyosis and Fatty Liver: Coexistence and Management

Weight Loss

min read

Adenomyosis and Fatty Liver: Coexistence and Management

Adenomyosis and fatty liver disease can occur together. Discover the shared risk factors, underlying mechanisms, treatment approaches, and when to seek medical advice for these coexisting conditions.

Allergy Medication Safe for AF: Antihistamines, Risks & UK Guidance

Supplements

min read

Allergy Medication Safe for AF: Antihistamines, Risks & UK Guidance

Allergy medication safe for AF — find out which antihistamines are heart-friendly, which decongestants to avoid, and how to manage hay fever safely with atrial fibrillation. UK-focused, NHS-aligned guidance.

Mounjaro

min read

Mounjaro and Skin Tags: Effects, Management and Advice

Discover the connection between Mounjaro and skin tags. Learn whether tirzepatide causes or reduces skin tags, how weight loss affects skin health, and when to seek medical advice about skin changes during treatment.

N-Acetyl Glucosamine Benefits: Evidence for Skin and Digestive Health

Supplements

min read

N-Acetyl Glucosamine Benefits: Evidence for Skin and Digestive Health

Discover the evidence behind N-acetyl glucosamine benefits for skin health and digestive support. Learn about safe dosing, potential side effects, and when to seek professional advice before supplementing with NAG.

Slipped Gastric Band ICD-10 Codes & NHS Management

Weight Loss

min read

Slipped Gastric Band ICD-10 Codes & NHS Management

ICD-10 and OPCS-4 codes for slipped gastric band, with symptoms, diagnosis and surgical management guidance for UK clinicians and coders.

Glucosamine or Fish Oil: Evidence, Safety and UK Guidance

Supplements

min read

Glucosamine or Fish Oil: Evidence, Safety and UK Guidance

Should you take glucosamine or fish oil for joint health? Discover the evidence, safety profiles, and UK guidance on these popular supplements, including whether you can take them together safely.

Vitamin D from Fruits: Why Plants Aren't a Source

Supplements

min read

Vitamin D from Fruits: Why Plants Aren't a Source

Can you get vitamin D from fruits? Discover why fruits contain virtually no vitamin D, learn about the best UK dietary sources including oily fish and fortified foods, and find evidence-based guidance on maintaining healthy vitamin D levels through diet and supplementation.

Fruits Rich in Magnesium: Top Sources and Daily Requirements

Supplements

min read

Fruits Rich in Magnesium: Top Sources and Daily Requirements

Discover which fruits are rich in magnesium and how they support your health. Learn about avocados, bananas, figs, berries, and other magnesium-containing fruits, plus daily requirements and practical dietary tips for UK adults.

Can High Cortisol Cause Fatty Liver? Understanding the Link

Weight Loss

min read

Can High Cortisol Cause Fatty Liver? Understanding the Link

Can high cortisol cause fatty liver? Discover how elevated cortisol levels affect liver fat accumulation, the conditions that raise cortisol, symptoms to watch for, and evidence-based management strategies to protect your liver health.

Is Fried Fish Fattening? Calories, Health Impact & Alternatives

Supplements

min read

Is Fried Fish Fattening? Calories, Health Impact & Alternatives

Is fried fish fattening? Discover how frying affects fish nutrition, calorie content, and health. Learn practical strategies for enjoying fish whilst managing weight and find healthier cooking alternatives that preserve flavour and nutritional value.

Foods to Avoid with Fatty Liver and Gallstones: UK Guide

Weight Loss

min read

Foods to Avoid with Fatty Liver and Gallstones: UK Guide

Discover which foods to avoid with fatty liver and gallstones, plus safe dietary alternatives. Evidence-based UK guidance to support liver and gallbladder health through informed food choices.

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

Diabetes and Gum Disease: HbA1c, Periodontitis, and Oral Health

Does Tadalafil Raise Blood Sugar? Evidence and Guidance

Do Hair Extensions Cause Hair Loss? Risks, Signs & Safe Use

Fish Oil Supplements for Heart Health: Evidence and UK Guidance

Adenomyosis and Fatty Liver: Coexistence and Management

Allergy Medication Safe for AF: Antihistamines, Risks & UK Guidance

Mounjaro and Skin Tags: Effects, Management and Advice

N-Acetyl Glucosamine Benefits: Evidence for Skin and Digestive Health

Slipped Gastric Band ICD-10 Codes & NHS Management

Glucosamine or Fish Oil: Evidence, Safety and UK Guidance

Vitamin D from Fruits: Why Plants Aren't a Source

Fruits Rich in Magnesium: Top Sources and Daily Requirements

Can High Cortisol Cause Fatty Liver? Understanding the Link

Is Fried Fish Fattening? Calories, Health Impact & Alternatives

Foods to Avoid with Fatty Liver and Gallstones: UK Guide