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.

Read erectile dysfunction guides

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.

Erectile Dysfunction

min read

Which Race Has the Most Erectile Dysfunction? UK Evidence

Which race has the most erectile dysfunction? Discover what UK research reveals about ethnic differences in ED rates, the underlying health factors that truly matter, and why ethnicity alone doesn't determine risk. Evidence-based insights on diabetes, cardiovascular disease, and getting help through the NHS.

Erectile Dysfunction

min read

Does Guanfacine Cause Erectile Dysfunction? UK Evidence and Guidance

Does guanfacine cause erectile dysfunction? Explore the evidence, mechanisms, and what to do if you experience sexual side effects on this ADHD medication. Expert UK guidance for patients and clinicians.

Erectile Dysfunction

min read

Do Fat Burners Cause Erectile Dysfunction? Evidence and Guidance

Do fat burners cause erectile dysfunction? Explore the evidence on how stimulants in weight loss supplements may affect sexual function, potential mechanisms, and when to seek medical advice for ED.

Erectile Dysfunction

min read

Does Collagen Help Erectile Dysfunction? Evidence and Treatments

Does collagen help erectile dysfunction? Discover what the evidence says about collagen supplements for ED, how erectile function works, and which treatments are backed by NICE guidance for men seeking effective solutions.

Erectile Dysfunction

min read

Does Stem Cell Therapy Work for Erectile Dysfunction? UK Evidence Review

Does stem cell therapy work for erectile dysfunction? Explore the current evidence, safety concerns, and UK regulatory status of this experimental ED treatment. Learn about proven alternatives and what to consider before pursuing stem cell therapy.

Erectile Dysfunction

min read

Are Pine Nuts Good for Erectile Dysfunction? Evidence and Treatments

Are pine nuts good for erectile dysfunction? Discover the evidence behind pine nuts and ED, their nutritional benefits, and proven treatments recommended by UK clinical guidelines for managing erectile dysfunction effectively.

Does Nateglinide Increase Incretin Duration of Action?

Weight Loss

min read

Does Nateglinide Increase Incretin Duration of Action?

Does nateglinide increase incretin duration of action? Discover how nateglinide works, its mechanism compared to incretin-based therapies, and UK prescribing guidance for type 2 diabetes management.

When Does Sildenafil Peak After Taking? Timing and Optimisation Guide

Erectile Dysfunction

min read

When Does Sildenafil Peak After Taking? Timing and Optimisation Guide

Discover when sildenafil peaks after taking and how to optimise timing for best results. Learn about factors affecting absorption, dosing guidance, and what to expect during peak effect. Evidence-based UK clinical advice.

Is Testogel Made From Plants? UK Manufacturing and Safety Guide

Testosterone

min read

Is Testogel Made From Plants? UK Manufacturing and Safety Guide

Is Testogel made from plants? Discover how Testogel's bioidentical testosterone is synthesised from plant-derived precursors, its ingredient composition, suitability for vegetarians and vegans, and essential UK safety guidance for testosterone replacement therapy.

Incretin Mimetics and SGLT2 Inhibitors: Combination Therapy for Type 2 Diabetes

Weight Loss

min read

Incretin Mimetics and SGLT2 Inhibitors: Combination Therapy for Type 2 Diabetes

Discover how incretin mimetics and SGLT2 inhibitors work together to manage type 2 diabetes. Learn about their complementary benefits, side effects, cardiovascular protection, and NHS prescribing guidance for optimal diabetes care.

Erectile Dysfunction

min read

Do Calcium Channel Blockers Cause Erectile Dysfunction? UK Guide

Do calcium channel blockers cause erectile dysfunction? Discover the evidence on CCBs like amlodipine and ED risk, which blood pressure medicines affect sexual function, and how to manage symptoms whilst maintaining cardiovascular health.

Erectile Dysfunction

min read

Do Germans Use Compression Wave Therapy for Erectile Dysfunction?

Do Germans use compression wave therapy for erectile dysfunction? Explore the evidence, availability, and clinical guidelines for low-intensity shockwave therapy in Germany and the UK, plus proven ED treatments.

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

Which Race Has the Most Erectile Dysfunction? UK Evidence

Does Guanfacine Cause Erectile Dysfunction? UK Evidence and Guidance

Do Fat Burners Cause Erectile Dysfunction? Evidence and Guidance

Does Collagen Help Erectile Dysfunction? Evidence and Treatments

Does Stem Cell Therapy Work for Erectile Dysfunction? UK Evidence Review

Are Pine Nuts Good for Erectile Dysfunction? Evidence and Treatments

Does Nateglinide Increase Incretin Duration of Action?

When Does Sildenafil Peak After Taking? Timing and Optimisation Guide

Is Testogel Made From Plants? UK Manufacturing and Safety Guide

Incretin Mimetics and SGLT2 Inhibitors: Combination Therapy for Type 2 Diabetes

Do Calcium Channel Blockers Cause Erectile Dysfunction? UK Guide

Do Germans Use Compression Wave Therapy for Erectile Dysfunction?

Lump After Injection: Causes, Treatment & Prevention

Swollen Lymph Nodes and Saxenda: Causes & Advice

Does Ozempic Cause Headaches? Causes & Management

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