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

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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.

GLP-1 & Libido: Saxenda, Tirzepatide & Sex Drive

GLP-1 Brands

min read

GLP-1 & Libido: Saxenda, Tirzepatide & Sex Drive

Do GLP-1 weight loss drugs affect libido? Explore UK clinical evidence on medicines like Saxenda and tirzepatide, plus when to see your GP.

Vitamin D Metabolism: Pathway, Testing and Clinical Implications

Supplements

min read

Vitamin D Metabolism: Pathway, Testing and Clinical Implications

Discover how vitamin D metabolism works, from sunlight synthesis to active hormone production. Learn which conditions disrupt this pathway, UK testing guidelines, and why understanding this process matters for bone health and deficiency prevention.

Gastric Banding Surgery: Eligibility, Risks, and Finding Accredited Services

Weight Loss

min read

Gastric Banding Surgery: Eligibility, Risks, and Finding Accredited Services

Gastric banding surgery explained: how it works, who qualifies, risks, recovery, and how to find accredited bariatric services in the UK or Tuscaloosa, USA. Evidence-based guidance from NHS and NICE.

How Long Does Sildenafil Stay in Your Urine? Detection & Safety

Erectile Dysfunction

min read

How Long Does Sildenafil Stay in Your Urine? Detection & Safety

How long does sildenafil stay in your urine? Discover detection timeframes (typically 24–48 hours), factors affecting elimination, drug testing considerations, and essential safety information for patients prescribed this medication.

Can Females Have Gynaecomastia? Breast Changes in Women Explained

Weight Loss

min read

Can Females Have Gynaecomastia? Breast Changes in Women Explained

Can females have gynaecomastia? Learn why the diagnosis is specific to those assigned male at birth, what similar breast conditions affect women, and when to seek NHS advice.

Iron and Zinc Foods: Best Sources and Absorption Tips

Supplements

min read

Iron and Zinc Foods: Best Sources and Absorption Tips

Discover the best iron and zinc foods to support your health. Learn which dietary sources provide these essential minerals, how to maximise absorption, and daily requirements for different life stages. Expert UK guidance on preventing deficiency.

Wegovy

min read

Can Wegovy Cause Panic Attacks: A Comprehensive Look into GLP-1 Weight Loss Treatments?

Can Wegovy cause panic attacks? Explore the connection between this weight-loss treatment and anxiety symptoms, and find management tips.

Blood Tests for Diabetes: HbA1c and Full Blood Count Explained

Weight Loss

min read

Blood Tests for Diabetes: HbA1c and Full Blood Count Explained

Blood tests for diabetes including HbA1c and full blood count explained — what they measure, how to interpret your results, and when to contact your GP. UK NHS guidance.

Does Ozempic Show Up in Urine Tests? UK Medical Guide

GLP-1 Brands

min read

Does Ozempic Show Up in Urine Tests? UK Medical Guide

Does Ozempic show up in urine tests? Discover why semaglutide is not detected in standard drug screening, what tests actually measure, and what to tell your doctor about this diabetes medication.

Best Allergy Medication for Cottonwood Allergy: UK Guide

Supplements

min read

Best Allergy Medication for Cottonwood Allergy: UK Guide

Discover the best allergy medication for cottonwood allergy, including antihistamines, nasal corticosteroid sprays, and combination treatments. Learn which options suit your symptoms, how to use them effectively, and when to see your GP for persistent allergic rhinitis.

Hair Loss

min read

Do Sulfates Cause Hair Loss? Evidence, Risks, and NHS Guidance

Do sulfates cause hair loss? Learn what the clinical evidence says about SLS and SLES in shampoos, who is most sensitive, and when to see a GP about hair shedding.

Can Muscles Grow in a Calorie Deficit? Evidence-Based UK Guide

Weight Loss

min read

Can Muscles Grow in a Calorie Deficit? Evidence-Based UK Guide

Can muscles grow in a calorie deficit? Discover the science behind body recomposition, who can build muscle whilst losing fat, and practical UK-aligned guidance on protein intake, training, and safe calorie restriction.

What Is Cod Liver Oil Good For? Benefits and Uses

Supplements

min read

What Is Cod Liver Oil Good For? Benefits and Uses

Discover what cod liver oil is good for, including cardiovascular, bone, and immune health benefits. Learn about safe dosing, who should take it, potential side effects, and important precautions for vitamin A and D supplementation in the UK.

Does Ozempic Have Sulfa in It? Allergy Safety Guide

GLP-1 Brands

min read

Does Ozempic Have Sulfa in It? Allergy Safety Guide

Does Ozempic have sulfa in it? Find out whether Ozempic contains sulfonamides and what this means for patients with sulfa allergies. Expert guidance on semaglutide safety, chemical composition, and suitable diabetes medication alternatives for those with drug sensitivities.

Erectile Dysfunction

min read

Does Repatha Cause Erectile Dysfunction? Evidence and Guidance

Does Repatha cause erectile dysfunction? Discover the clinical evidence, understand the link between cholesterol medications and ED, and learn when to speak to your GP about managing both conditions safely.

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

GLP-1 & Libido: Saxenda, Tirzepatide & Sex Drive

Vitamin D Metabolism: Pathway, Testing and Clinical Implications

Gastric Banding Surgery: Eligibility, Risks, and Finding Accredited Services

How Long Does Sildenafil Stay in Your Urine? Detection & Safety

Can Females Have Gynaecomastia? Breast Changes in Women Explained

Iron and Zinc Foods: Best Sources and Absorption Tips

Can Wegovy Cause Panic Attacks: A Comprehensive Look into GLP-1 Weight Loss Treatments?

Blood Tests for Diabetes: HbA1c and Full Blood Count Explained

Does Ozempic Show Up in Urine Tests? UK Medical Guide

Best Allergy Medication for Cottonwood Allergy: UK Guide

Do Sulfates Cause Hair Loss? Evidence, Risks, and NHS Guidance

Can Muscles Grow in a Calorie Deficit? Evidence-Based UK Guide

What Is Cod Liver Oil Good For? Benefits and Uses

Does Ozempic Have Sulfa in It? Allergy Safety Guide

Does Repatha Cause Erectile Dysfunction? Evidence and Guidance

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