Bolt Guides

Expert insights on weight loss and more.

Featured

Why Do I Feel Worse After My B12 Injection? Causes & Management

Supplements

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Why Do I Feel Worse After My B12 Injection? Causes & Management

Discover why you might feel worse after a B12 injection, including metabolic adjustment, common side effects, and when to seek medical advice. Expert guidance on managing post-injection symptoms safely.

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Weight loss

Read all on weight loss

Is 16/8 Intermittent Fasting Sustainable Long-Term?

Weight Loss

min read

Is 16/8 Intermittent Fasting Sustainable Long-Term?

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.

Do Heavier People Lose Weight Faster? The Science

Weight Loss

min read

Do Heavier People Lose Weight Faster? The Science

Find out why people with higher body weight often lose weight faster initially — and what the metabolic science says about sustaining those early results.

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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

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.

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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 Testogel Work in Older Men? Efficacy and Safety Guide

Testosterone

min read

Does Testogel Work in Older Men? Efficacy and Safety Guide

Does Testogel work in older men? Discover how this testosterone gel affects older adults, its proven benefits for muscle, bone, and libido, plus crucial safety guidance and monitoring requirements for age-related testosterone decline.

Incretin Mimetics and Pancreatic Cancer: Evidence and Guidance

Weight Loss

min read

Incretin Mimetics and Pancreatic Cancer: Evidence and Guidance

Do incretin mimetics increase pancreatic cancer risk? Explore the latest evidence, MHRA guidance, and what patients need to know about GLP-1 receptor agonists and pancreatic safety.

Erectile Dysfunction

min read

Does Anastrozole Help With Erectile Dysfunction? UK Evidence Review

Does anastrozole help with erectile dysfunction? Discover why this breast cancer medication is not recommended for ED, the risks of off-label use in men, and evidence-based treatments available through the NHS for erectile dysfunction.

Erectile Dysfunction

min read

Does Oxytocin Help With Erectile Dysfunction? UK Evidence Review

Does oxytocin help with erectile dysfunction? Discover why this hormone isn't approved for ED treatment in the UK, what the evidence shows, and which proven NHS treatments are available for men experiencing erectile difficulties.

Testosterone

min read

Is Tostran or Testogel the Best Testosterone Gel?

Is Tostran or Testogel the best testosterone gel for you? Compare effectiveness, side effects, application differences, and UK prescribing guidance to find the most suitable testosterone replacement therapy for male hypogonadism.

What Is the Incretin Effect in Diabetes Control?

Weight Loss

min read

What Is the Incretin Effect in Diabetes Control?

What is the incretin effect and why does it matter for diabetes? Discover how gut hormones control insulin release after meals, why this effect is impaired in type 2 diabetes, and how incretin-based therapies like GLP-1 agonists work to restore blood sugar control.

Erectile Dysfunction

min read

Does Oatmeal Help with Erectile Dysfunction? Evidence Review

Does oatmeal help with erectile dysfunction? Discover what the clinical evidence says about oatmeal's role in ED, its cardiovascular benefits, and proven dietary approaches for erectile health. Learn when to seek medical advice.

Erectile Dysfunction

min read

Does Champix Cause Erectile Dysfunction? UK Evidence and Guidance

Does Champix cause erectile dysfunction? Learn what UK evidence shows about varenicline and sexual health, plus other factors affecting erectile function during smoking cessation and when to seek medical advice.

Erectile Dysfunction

min read

Does Subutex Cause Erectile Dysfunction? UK Medical Guide

Does Subutex cause erectile dysfunction? Learn how buprenorphine affects sexual function, why opioid medications may impact erections, and what management options are available. Expert UK guidance on addressing ED whilst maintaining opioid substitution therapy safely.

Erectile Dysfunction

min read

Opioids and Erectile Dysfunction: Causes, Treatment and When to Seek Help

Discover how opioid medications can cause erectile dysfunction, why this happens, and what treatment options are available. Learn when to speak to your GP about opioid-related erectile problems and how to manage sexual health whilst maintaining pain control.

Does TestoGel Need Refrigeration? Storage Guide & Travel Tips

Testosterone

min read

Does TestoGel Need Refrigeration? Storage Guide & Travel Tips

Does TestoGel need refrigeration? Find out the correct storage temperature for TestoGel, what happens if stored incorrectly, and essential tips for travelling with your testosterone replacement therapy safely.

Testosterone

min read

Is Testogel Natural? Bioidentical Testosterone Explained

Is Testogel natural or synthetic? Discover the truth about bioidentical testosterone in Testogel, how it's made, when it's prescribed, and what makes it different from truly synthetic hormones. UK medical guidance explained.

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

Why Do I Feel Worse After My B12 Injection? Causes & Management

Weight loss

Is 16/8 Intermittent Fasting Sustainable Long-Term?

How Does Fasting Work? Benefits, Types & Safety

Do Heavier People Lose Weight Faster? The Science

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 Testogel Work in Older Men? Efficacy and Safety Guide

Incretin Mimetics and Pancreatic Cancer: Evidence and Guidance

Does Anastrozole Help With Erectile Dysfunction? UK Evidence Review

Does Oxytocin Help With Erectile Dysfunction? UK Evidence Review

Is Tostran or Testogel the Best Testosterone Gel?

What Is the Incretin Effect in Diabetes Control?

Does Oatmeal Help with Erectile Dysfunction? Evidence Review

Does Champix Cause Erectile Dysfunction? UK Evidence and Guidance

Does Subutex Cause Erectile Dysfunction? UK Medical Guide

Opioids and Erectile Dysfunction: Causes, Treatment and When to Seek Help

Does TestoGel Need Refrigeration? Storage Guide & Travel Tips

Is Testogel Natural? Bioidentical Testosterone Explained

Lump After Injection: Causes, Treatment & Prevention

Swollen Lymph Nodes and Saxenda: Causes & Advice

Does Ozempic Cause Headaches? Causes & Management

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