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.

Read now

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.

Read now

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.

Testosterone

min read

How Often Should Testosterone Be Checked When Using Testogel?

Find out how often testosterone levels should be checked when using Testogel. Learn about UK monitoring schedules, blood tests, safety checks, and signs your dose may need adjusting under NHS guidelines.

Erectile Dysfunction

min read

Do Antipsychotics Cause Erectile Dysfunction? UK Guide

Do antipsychotics cause erectile dysfunction? Discover how antipsychotic medications affect sexual function, which drugs carry the highest risk, and evidence-based management strategies to maintain both mental health and sexual wellbeing.

Erectile Dysfunction

min read

Does Hyperbaric Oxygen Therapy Help Erectile Dysfunction? UK Evidence Review

Does hyperbaric oxygen therapy help erectile dysfunction? Discover what the evidence says, why HBOT isn't NHS-recommended for ED, and which proven treatments are available through your GP.

Erectile Dysfunction

min read

Are Electrolyte Supplements Good for Erectile Dysfunction? Evidence Review

Are electrolyte supplements good for erectile dysfunction? Discover what the evidence really says about electrolytes and ED, plus proven treatments recommended by NICE and the NHS for improving erectile function.

Erectile Dysfunction

min read

Are Pears Good for Erectile Dysfunction? Evidence and Advice

Are pears good for erectile dysfunction? Discover what the evidence says about pears and ED, including their nutritional benefits, how diet affects erectile function, and when to seek medical advice for persistent symptoms.

Difference Between Sulfonylureas and Incretin Mimetics Explained

Weight Loss

min read

Difference Between Sulfonylureas and Incretin Mimetics Explained

Discover the key difference between sulfonylureas and incretin mimetics for type 2 diabetes. Compare mechanisms, side effects, weight changes, hypoglycaemia risk, and which treatment suits your needs based on NICE guidance.

Erectile Dysfunction

min read

Does Norvasc (Amlodipine) Cause Erectile Dysfunction? UK Guide

Does Norvasc (amlodipine) cause erectile dysfunction? Discover the evidence on this common blood pressure medication and sexual health, plus what to do if you experience ED whilst taking amlodipine.

Erectile Dysfunction

min read

Is Shilajit Good for Erectile Dysfunction? Evidence and Safety

Is shilajit good for erectile dysfunction? Discover what the clinical evidence says, safety concerns to consider, and NHS-recommended treatments for ED that are proven to work.

Is Testogel Pump Equivalent to Sachets? UK Dosing Guide

Testosterone

min read

Is Testogel Pump Equivalent to Sachets? UK Dosing Guide

Is Testogel pump equivalent to sachets? Discover the key differences in concentration, dosing and application between Testogel formulations, plus expert guidance on switching safely between testosterone replacement products.

Incretins Role in Pregnancy: Safety and UK Guidance

Weight Loss

min read

Incretins Role in Pregnancy: Safety and UK Guidance

Discover the incretins role in pregnancy, including safety concerns, UK guidance, and why GLP-1 receptor agonists and DPP-4 inhibitors are not recommended during pregnancy. Learn about pregnancy-safe diabetes treatment alternatives.

Erectile Dysfunction

min read

What Is the Horse Trick for Men's Erectile Dysfunction?

Discover what the horse trick for men's erectile dysfunction really is—a pelvic floor exercise technique backed by clinical evidence. Learn how it works, evidence-based treatments available on the NHS, and when to seek medical help for ED.

Erectile Dysfunction

min read

Do Muscle Relaxants Help with Erectile Dysfunction? Evidence and Alternatives

Do muscle relaxants help with erectile dysfunction? Discover the evidence on muscle relaxants and ED, why they may worsen rather than improve sexual function, and which proven treatments actually work for erectile problems.

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

How Often Should Testosterone Be Checked When Using Testogel?

Do Antipsychotics Cause Erectile Dysfunction? UK Guide

Does Hyperbaric Oxygen Therapy Help Erectile Dysfunction? UK Evidence Review

Are Electrolyte Supplements Good for Erectile Dysfunction? Evidence Review

Are Pears Good for Erectile Dysfunction? Evidence and Advice

Difference Between Sulfonylureas and Incretin Mimetics Explained

Does Norvasc (Amlodipine) Cause Erectile Dysfunction? UK Guide

Is Shilajit Good for Erectile Dysfunction? Evidence and Safety

Is Testogel Pump Equivalent to Sachets? UK Dosing Guide

Incretins Role in Pregnancy: Safety and UK Guidance

What Is the Horse Trick for Men's Erectile Dysfunction?

Do Muscle Relaxants Help with Erectile Dysfunction? Evidence and Alternatives

Lump After Injection: Causes, Treatment & Prevention

Swollen Lymph Nodes and Saxenda: Causes & Advice

Does Ozempic Cause Headaches? Causes & Management

Personalized weight management for women