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.

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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.

How Quickly Does Testogel Work? Timeline and What to Expect

Testosterone

min read

How Quickly Does Testogel Work? Timeline and What to Expect

Discover how quickly Testogel works for testosterone replacement therapy. Learn the timeline for improvements in energy, mood, sexual function, and body composition, plus essential monitoring and safety guidance for UK patients.

Does Testogel Affect Sleep? UK Guide to Side Effects

Testosterone

min read

Does Testogel Affect Sleep? UK Guide to Side Effects

Does Testogel affect sleep? Discover how testosterone replacement therapy influences sleep patterns, including insomnia and sleep apnoea risks. Learn practical management strategies and when to contact your GP about sleep problems whilst using Testogel.

Erectile Dysfunction

min read

Is Garlic Water Good for Erectile Dysfunction? Evidence and Treatments

Is garlic water good for erectile dysfunction? Discover what the science says about garlic water for ED, potential risks, and proven NHS treatments that actually work for erectile difficulties.

Erectile Dysfunction

min read

Does Peyronie's Disease Cause Erectile Dysfunction? UK Guide

Does Peyronie's disease cause erectile dysfunction? Discover how penile plaques affect erections, the physical and psychological factors involved, and evidence-based treatment options available in the UK.

Erectile Dysfunction

min read

Is Niacin Good for Erectile Dysfunction? UK Evidence Review

Is niacin good for erectile dysfunction? Discover what the clinical evidence says about vitamin B3 for ED, how niacin works, potential risks, and proven NHS treatment options available in the UK.

Erectile Dysfunction

min read

Does Red Bull Help With Erectile Dysfunction? Evidence and Risks

Does Red Bull help with erectile dysfunction? Discover the clinical evidence, potential risks of using energy drinks for ED, and evidence-based treatments recommended by UK healthcare professionals. Learn when to seek medical advice.

Erectile Dysfunction

min read

Does Fluvoxamine Cause Erectile Dysfunction? UK Medical Guide

Does fluvoxamine cause erectile dysfunction? Discover how this SSRI antidepressant affects sexual function, why it happens, and evidence-based management options available through your GP to maintain both mental health and quality of life.

Erectile Dysfunction

min read

Does Nolvadex Help with Erectile Dysfunction? UK Evidence Review

Does Nolvadex help with erectile dysfunction? Discover the evidence behind tamoxifen's effects on sexual function, why ED occurs during hormone therapy, and proven treatments recommended by UK guidelines.

Erectile Dysfunction

min read

Does Tramadol Cause Erectile Dysfunction? UK Guide

Does tramadol cause erectile dysfunction? Discover how this opioid analgesic may affect sexual function, the mechanisms involved, and practical management strategies for men experiencing ED whilst taking tramadol for pain relief.

Erectile Dysfunction

min read

Does Atomoxetine Cause Erectile Dysfunction? UK Medical Guide

Does atomoxetine cause erectile dysfunction? Learn about this recognised side effect of ADHD medication, how common it is, management strategies including dose adjustment and medical treatments, and when to speak to your GP about sexual side effects whilst taking atomoxetine.

Erectile Dysfunction

min read

Does Valium Cause Erectile Dysfunction? Evidence and Management

Does Valium cause erectile dysfunction? Discover the evidence linking diazepam to sexual side effects, how benzodiazepines may affect erectile function, and what management options are available if you're experiencing difficulties whilst taking this medication.

Erectile Dysfunction

min read

Does Zantac Cause Erectile Dysfunction? Evidence and Alternatives

Does Zantac cause erectile dysfunction? Discover what clinical evidence reveals about ranitidine and sexual function, explore safer alternatives for acid reflux, and learn when to seek medical advice for erectile difficulties.

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 Quickly Does Testogel Work? Timeline and What to Expect

Does Testogel Affect Sleep? UK Guide to Side Effects

Is Garlic Water Good for Erectile Dysfunction? Evidence and Treatments

Does Peyronie's Disease Cause Erectile Dysfunction? UK Guide

Is Niacin Good for Erectile Dysfunction? UK Evidence Review

Does Red Bull Help With Erectile Dysfunction? Evidence and Risks

Does Fluvoxamine Cause Erectile Dysfunction? UK Medical Guide

Does Nolvadex Help with Erectile Dysfunction? UK Evidence Review

Does Tramadol Cause Erectile Dysfunction? UK Guide

Does Atomoxetine Cause Erectile Dysfunction? UK Medical Guide

Does Valium Cause Erectile Dysfunction? Evidence and Management

Does Zantac Cause Erectile Dysfunction? Evidence and Alternatives

Lump After Injection: Causes, Treatment & Prevention

Swollen Lymph Nodes and Saxenda: Causes & Advice

Does Ozempic Cause Headaches? Causes & Management

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