Bolt Guides

Expert insights on weight loss and more.

Featured

Restarting Ozempic After Surgery: When & How to Resume

GLP-1 Brands

min read

Restarting Ozempic After Surgery: When & How to Resume

Learn when to safely restart Ozempic after surgery, how to resume treatment after 1-4 weeks off, and what to expect when restarting GLP-1 therapy.

Read now

Weight loss

Read all on weight loss

Weight Loss

min read

Is a 1000 Calorie Deficit Good for Weight Loss?

Is a 1000 calorie deficit safe for weight loss? Discover the risks, who should avoid it, and why NHS guidance recommends gentler approaches for sustainable results.

Gastric Band and Fibromyalgia: UK Eligibility, Risks, and Guidelines

Weight Loss

min read

Gastric Band and Fibromyalgia: UK Eligibility, Risks, and Guidelines

Gastric band surgery and fibromyalgia: understand UK eligibility criteria, NICE guidelines, medication considerations, nutritional monitoring, and how to talk to your NHS care team about bariatric options.

Calorie Deficit Stomach Pain: Causes, Symptoms & When to See a GP

Weight Loss

min read

Calorie Deficit Stomach Pain: Causes, Symptoms & When to See a GP

Calorie deficit stomach pain explained: discover why cutting calories causes digestive discomfort, how to manage symptoms safely, and when to see your GP — based on NHS and NICE guidance.

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

Restarting Ozempic After Surgery: When & How to Resume

Learn when to safely restart Ozempic after surgery, how to resume treatment after 1-4 weeks off, and what to expect when restarting GLP-1 therapy.

Read now

Ozempic and Hiatal Hernia: Management and Safety Guidance

GLP-1 Brands

min read

Ozempic and Hiatal Hernia: Management and Safety Guidance

Ozempic and hiatal hernia: understand how this diabetes medication may affect digestive symptoms, practical management tips for patients with hiatal hernia, and when to seek medical advice for safe, effective treatment.

Does Ozempic Cause Numbness and Tingling? UK Clinical Guidance

GLP-1 Brands

min read

Does Ozempic Cause Numbness and Tingling? UK Clinical Guidance

Does Ozempic cause numbness and tingling? Discover the indirect mechanisms that may explain paraesthesia during treatment, when to seek medical advice, and how to manage symptoms effectively with UK clinical guidance.

Ozempic vs Mounjaro vs Wegovy Cost: UK Comparison Guide

GLP-1 Brands

min read

Ozempic vs Mounjaro vs Wegovy Cost: UK Comparison Guide

Compare Ozempic vs Mounjaro vs Wegovy costs in the UK. Discover NHS eligibility criteria, private prescription prices (£150–£350/month), insurance coverage, and cost-effectiveness for weight management and diabetes treatment.

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 Anavar Help with Erectile Dysfunction? UK Guide

Does Anavar help with erectile dysfunction? Discover why this anabolic steroid may worsen ED, the risks to sexual health, and evidence-based treatments available in the UK.

Read now

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.

Why You Should Not Let Your Girlfriend Apply Testogel

Testosterone

min read

Why You Should Not Let Your Girlfriend Apply Testogel

Discover why letting your girlfriend apply Testogel is dangerous. Learn about serious testosterone transfer risks to women and children, MHRA safety warnings, and how to use TRT safely to protect your partner from virilisation and hormonal side effects.

Does Testogel Work? Evidence, Timeframes and Effectiveness

Testosterone

min read

Does Testogel Work? Evidence, Timeframes and Effectiveness

Does Testogel work for low testosterone? Discover the clinical evidence, how long it takes to see results, factors affecting effectiveness, and what to expect from this UK-licensed testosterone replacement therapy.

Incretin Glucagon-Like Peptide-1 (GLP-1): Function and Therapy

Weight Loss

min read

Incretin Glucagon-Like Peptide-1 (GLP-1): Function and Therapy

Discover how incretin glucagon-like peptide-1 (GLP-1) regulates blood glucose, enhances insulin secretion, and underpins modern diabetes treatments. Learn about GLP-1 receptor agonists, benefits, side effects, and UK clinical guidance.

Can I Take Metformin and Saxenda at the Same Time?

GLP-1 Brands

min read

Can I Take Metformin and Saxenda at the Same Time?

Can I take metformin and Saxenda at the same time? Discover how these medications work together safely, key safety considerations, side effect management, and what to discuss with your GP before starting combination therapy for diabetes and weight management.

Hair Loss

min read

Washing Hair Every Day and Hair Loss: What the Evidence Says

Washing hair every day and hair loss — does daily shampooing really damage your follicles? Discover what UK dermatological evidence says, plus expert tips to protect hair health.

Erectile Dysfunction

min read

Does Nattokinase Help with Erectile Dysfunction? Evidence Review

Does nattokinase help with erectile dysfunction? Discover what the clinical evidence actually shows about this supplement, its safety considerations, and the proven treatments recommended by NICE for ED.

Calcium and Vitamin D Supplement: Uses, Dosage and Safety

Supplements

min read

Calcium and Vitamin D Supplement: Uses, Dosage and Safety

Discover how calcium and vitamin D supplements support bone health, who needs them, safe dosing guidance, potential side effects, drug interactions, and how to choose the right formulation for your needs.

Can a Fatty Liver Cause Hair Loss? Evidence and Guidance

Weight Loss

min read

Can a Fatty Liver Cause Hair Loss? Evidence and Guidance

Can a fatty liver cause hair loss? Discover the evidence-based connection between fatty liver disease and hair thinning, when liver health affects hair growth, and what other causes to consider. Expert UK medical guidance.

What Are the Side Effects of Testogel? UK Guide

Testosterone

min read

What Are the Side Effects of Testogel? UK Guide

What are the side effects of Testogel? Discover common reactions like skin irritation and acne, serious complications requiring urgent care, who should avoid Testogel, and essential safety guidance for testosterone replacement therapy in the UK.

Calorie Deficit and Low Blood Sugar: Causes, Symptoms and Safe Management

Weight Loss

min read

Calorie Deficit and Low Blood Sugar: Causes, Symptoms and Safe Management

Calorie deficit and low blood sugar: find out how cutting calories affects blood glucose, who is most at risk of hypoglycaemia, how to manage symptoms safely, and when to see your GP.

GLP-1 Side Effects & Metabolic Benefits Explained

Weight Loss

min read

GLP-1 Side Effects & Metabolic Benefits Explained

A UK clinical guide to GLP-1 receptor agonists: how they affect metabolism, blood sugar, and weight, plus side effects and prescribing eligibility.

Testosterone

min read

Can Methadone Treatment Make You Have Low Testosterone? UK Guide

Can methadone treatment make you have low testosterone? Discover how methadone affects hormone levels, recognise the symptoms of testosterone deficiency, and learn about NHS testing and treatment options to improve your health and wellbeing.

L-Theanine and Magnesium: Benefits, Dosage, Safety and Interactions

Supplements

min read

L-Theanine and Magnesium: Benefits, Dosage, Safety and Interactions

Discover how L-theanine and magnesium work, their potential benefits for stress and sleep, safe dosing guidance, possible side effects, drug interactions, and who should avoid them. Evidence-based advice for UK readers.

Weight Loss

min read

Can Weight Loss Injections Cause Heart Attacks? UK Evidence Review

Can weight loss injections cause heart attacks? Discover the evidence-based cardiovascular safety profile of GLP-1 medications like Wegovy and Saxenda, including clinical trial data, monitoring requirements, and UK prescribing guidance for safe obesity treatment.

What Is an NAD? Understanding Nicotinamide Adenine Dinucleotide

Supplements

min read

What Is an NAD? Understanding Nicotinamide Adenine Dinucleotide

What is an NAD? Discover how nicotinamide adenine dinucleotide (NAD) powers cellular energy, supports DNA repair, and influences metabolism. Learn about NAD's role in health, deficiency symptoms, and whether NAD therapy is evidence-based. Expert UK medical guidance on this essential coenzyme.

Does Water Fasting Help with Fatty Liver? UK Medical Guidance

Weight Loss

min read

Does Water Fasting Help with Fatty Liver? UK Medical Guidance

Does water fasting help with fatty liver? Discover what UK medical guidance says about water fasting for NAFLD, the evidence behind fasting protocols, potential risks, and NHS-recommended approaches to safely manage and reverse fatty liver disease through proven lifestyle interventions.

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 ...

Bolt Guides

Featured

Restarting Ozempic After Surgery: When & How to Resume

Weight loss

Is a 1000 Calorie Deficit Good for Weight Loss?

Gastric Band and Fibromyalgia: UK Eligibility, Risks, and Guidelines

Calorie Deficit Stomach Pain: Causes, Symptoms & When to See a GP

GLP-1 Brands

Wegovy

Mounjaro

Restarting Ozempic After Surgery: When & How to Resume

Ozempic and Hiatal Hernia: Management and Safety Guidance

Does Ozempic Cause Numbness and Tingling? UK Clinical Guidance

Ozempic vs Mounjaro vs Wegovy Cost: UK Comparison Guide

Men’s Health

Testosterone

Erectile dysfunction

Does Anavar Help with Erectile Dysfunction? UK Guide

How Quickly Does Testogel Work? Timeline and What to Expect

Why You Should Not Let Your Girlfriend Apply Testogel

Does Testogel Work? Evidence, Timeframes and Effectiveness

Browse all

Incretin Glucagon-Like Peptide-1 (GLP-1): Function and Therapy

Can I Take Metformin and Saxenda at the Same Time?

Washing Hair Every Day and Hair Loss: What the Evidence Says

Does Nattokinase Help with Erectile Dysfunction? Evidence Review

Calcium and Vitamin D Supplement: Uses, Dosage and Safety

Can a Fatty Liver Cause Hair Loss? Evidence and Guidance

What Are the Side Effects of Testogel? UK Guide

Calorie Deficit and Low Blood Sugar: Causes, Symptoms and Safe Management

GLP-1 Side Effects & Metabolic Benefits Explained

Can Methadone Treatment Make You Have Low Testosterone? UK Guide

L-Theanine and Magnesium: Benefits, Dosage, Safety and Interactions

Can Weight Loss Injections Cause Heart Attacks? UK Evidence Review

What Is an NAD? Understanding Nicotinamide Adenine Dinucleotide

Does Water Fasting Help with Fatty Liver? UK Medical Guidance

Does Testosterone Affect Fertility? Recovery & Conception Guide

Personalized weight management for women