Bolt Guides

Find out which intermittent fasting methods are easiest to stick to, what the evidence says about long-term results, and practical tips to make IF work for you.

How Does Fasting Work? Benefits, Types & Safety

Weight Loss

min read

How Does Fasting Work? Benefits, Types & Safety

Discover what fasting does to your body — from fat burning and autophagy to hormonal shifts. Learn the types, rules, and who should avoid fasting.

Read all on weight loss

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

Ozempic Nausea: Why It Happens & How to Manage It

Feeling sick on Ozempic? Learn why nausea is so common with semaglutide, how long it lasts, tips to ease symptoms, and when to seek medical advice.

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Ozempic Nausea: Why It Happens & How to Manage It

Lump After Injection: Causes, Treatment & Prevention

GLP-1 Brands

min read

Lump After Injection: Causes, Treatment & Prevention

Got a lump after a subcutaneous injection? Learn what causes injection site lumps, how to treat them at home, and when to seek medical advice.

Swollen Lymph Nodes and Saxenda: Causes & Advice

GLP-1 Brands

min read

Swollen Lymph Nodes and Saxenda: Causes & Advice

Not sure if Saxenda causes swollen lymph nodes? Learn what lymphadenopathy means, likely causes, and when to seek medical help during weight loss treatment.

Does Ozempic Cause Headaches? Causes & Management

GLP-1 Brands

min read

Does Ozempic Cause Headaches? Causes & Management

Ozempic headaches affect 1 in 10–100 patients. Find out why they happen, how long they last, and practical ways to manage them safely.

Read all on GLP-1 brands

Men’s Health

Testosterone

Answer all your questions about testosterone.

Read testosterone guides

Erectile dysfunction

Answer all your questions about erectile dysfunction.

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Erectile Dysfunction

min read

Does Castor Oil Help with Erectile Dysfunction? Evidence and Treatments

Does castor oil help with erectile dysfunction? Discover the evidence behind this claim, learn about proven ED treatments recommended by NICE, and find out when to see your GP for persistent erectile difficulties.

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Testosterone

min read

Does Testosterone Affect Fertility? Recovery & Conception Guide

Testosterone suppresses ovulation and fertility — but can it return after stopping treatment? Explore recovery timelines, risks, and conception options with ...

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.

Testosterone

min read

How Many nmol/L Does Testogel Raise Testosterone Levels?

Discover how many nmol/L Testogel raises testosterone levels in UK patients. Learn about expected increases, individual variation, dosing, absorption factors, and essential monitoring for safe testosterone replacement therapy.

Does Tolbutamide Increase Incretins Duration of Action? UK Evidence

Weight Loss

min read

Does Tolbutamide Increase Incretins Duration of Action? UK Evidence

Does tolbutamide increase the duration of action of incretins? Discover the evidence on sulphonylureas and incretin hormones, their distinct mechanisms, and what UK guidance says about combining these diabetes treatments safely.

Is Testogel a Controlled Drug? UK Legal Status Explained

Testosterone

min read

Is Testogel a Controlled Drug? UK Legal Status Explained

Is Testogel a controlled drug in the UK? Discover the legal classification, prescription requirements, safety regulations, and how to obtain testosterone gel lawfully through the NHS or private healthcare.

Erectile Dysfunction

min read

Is Erectile Dysfunction a Sign of Cancer? UK Medical Guide

Is erectile dysfunction a sign of cancer? Discover the real link between ED and cancer, when to worry, and what causes most cases of erectile dysfunction in UK men.

What Strength Sildenafil Should I Take? UK Dosing Guide

Erectile Dysfunction

min read

What Strength Sildenafil Should I Take? UK Dosing Guide

Discover what strength of sildenafil you should take for erectile dysfunction. Learn about the 25 mg, 50 mg, and 100 mg doses available in the UK, how to determine the right starting dose, and which factors affect your optimal strength. Expert guidance on safe, effective ED treatment.

How to Increase Absorption of Testogel: Expert Application Guide

Testosterone

min read

How to Increase Absorption of Testogel: Expert Application Guide

Discover how to increase absorption of Testogel with expert guidance on proper application technique, optimal timing, and common mistakes to avoid. Evidence-based advice aligned with UK clinical guidance to maximise testosterone replacement therapy effectiveness.

Erectile Dysfunction

min read

How Does Yohimbe Help Erectile Dysfunction? UK Evidence and Safety

How does yohimbe help erectile dysfunction? Discover the evidence, safety concerns, and why this unlicensed herbal product is not recommended in the UK. Learn about safer, proven ED treatments available on the NHS.

Erectile Dysfunction

min read

Are CPAP Machines Effective for Erectile Dysfunction? Evidence and Expectations

Are CPAP machines effective for erectile dysfunction? Discover how CPAP therapy may improve erectile function in men with sleep apnoea, review the clinical evidence, understand realistic expectations, and explore complementary treatment options for managing both conditions effectively.

Is It Harmful to Stop Testogel? Safety and Risks Explained

Testosterone

min read

Is It Harmful to Stop Testogel? Safety and Risks Explained

Is it harmful to stop Testogel? Discover what happens when you discontinue testosterone gel, the potential health risks, and how to safely stop treatment under medical supervision with expert UK guidance.

Erectile Dysfunction

min read

Does Pelvic Floor Dysfunction Cause Erectile Dysfunction? UK Guide

Does pelvic floor dysfunction cause erectile dysfunction? Discover how weakened pelvic floor muscles contribute to erectile difficulties, the mechanisms involved, diagnostic approaches, and evidence-based treatment options including pelvic floor muscle training and lifestyle modifications for improved sexual function.

Erectile Dysfunction

min read

Does Fatigue Cause Erectile Dysfunction? Understanding the Link

Does fatigue cause erectile dysfunction? Discover how chronic tiredness affects sexual function through hormonal, vascular, and psychological pathways. Learn about underlying medical conditions, when to seek help, and evidence-based treatment options to improve both energy levels and erectile function.

Is Metformin an Incretin? Understanding the Key Differences

Weight Loss

min read

Is Metformin an Incretin? Understanding the Key Differences

Is metformin an incretin? Discover the crucial differences between metformin and incretin-based therapies, how each works to control blood glucose, and what this means for your diabetes treatment options.

How Low Can Body Fat Go on Testogel? UK Clinical Guidance

Testosterone

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How Low Can Body Fat Go on Testogel? UK Clinical Guidance

Discover how Testogel affects body fat percentage in men with testosterone deficiency. Learn about realistic body composition changes, safe treatment goals, monitoring requirements, and UK clinical guidance for testosterone replacement therapy.

GLP-1 Brands

min read

Lump After Injection: Causes, Treatment & Prevention

Got a lump after a subcutaneous injection? Learn what causes injection site lumps, how to treat them at home, and when to seek medical advice.

GLP-1 Brands

min read

Swollen Lymph Nodes and Saxenda: Causes & Advice

Not sure if Saxenda causes swollen lymph nodes? Learn what lymphadenopathy means, likely causes, and when to seek medical help during weight loss treatment.

GLP-1 Brands

min read

Does Ozempic Cause Headaches? Causes & Management

Ozempic headaches affect 1 in 10–100 patients. Find out why they happen, how long they last, and practical ways to manage them safely.

Bolt Guides

Featured

Best Time to Take GLP-1: Morning or Night? (UK Guide)

Weight loss

Best Time to Take GLP-1: Morning or Night? (UK Guide)

Is 16/8 Intermittent Fasting Sustainable Long-Term?

How Does Fasting Work? Benefits, Types & Safety

GLP-1 Brands

Wegovy

Mounjaro

Ozempic Nausea: Why It Happens & How to Manage It

Lump After Injection: Causes, Treatment & Prevention

Swollen Lymph Nodes and Saxenda: Causes & Advice

Does Ozempic Cause Headaches? Causes & Management

Men’s Health

Testosterone

Erectile dysfunction

Does Castor Oil Help with Erectile Dysfunction? Evidence and Treatments

Does Testosterone Affect Fertility? Recovery & Conception Guide

Calorie Deficit Effect on Testosterone: What the Evidence Shows

How Many nmol/L Does Testogel Raise Testosterone Levels?

Browse all

Does Tolbutamide Increase Incretins Duration of Action? UK Evidence

Is Testogel a Controlled Drug? UK Legal Status Explained

Is Erectile Dysfunction a Sign of Cancer? UK Medical Guide

What Strength Sildenafil Should I Take? UK Dosing Guide

How to Increase Absorption of Testogel: Expert Application Guide

How Does Yohimbe Help Erectile Dysfunction? UK Evidence and Safety

Are CPAP Machines Effective for Erectile Dysfunction? Evidence and Expectations

Is It Harmful to Stop Testogel? Safety and Risks Explained

Does Pelvic Floor Dysfunction Cause Erectile Dysfunction? UK Guide

Does Fatigue Cause Erectile Dysfunction? Understanding the Link

Is Metformin an Incretin? Understanding the Key Differences

How Low Can Body Fat Go on Testogel? UK Clinical Guidance

Lump After Injection: Causes, Treatment & Prevention

Swollen Lymph Nodes and Saxenda: Causes & Advice

Does Ozempic Cause Headaches? Causes & Management

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