Bolt Guides

Expert insights on weight loss and more.

Featured

Hair Loss

min read

Supplements for Hair Loss in Females: Evidence, Safety, and NHS Guidance

Supplements for hair loss in females: discover which nutritional deficiencies are linked to thinning hair, what the NHS and MHRA say, safety considerations, and when to see your GP.

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Weight loss

Read all on weight loss

Is It Okay to Break Your Calorie Deficit for One Day?

Weight Loss

min read

Is It Okay to Break Your Calorie Deficit for One Day?

Is it okay to break your calorie deficit for one day? Learn what really happens to your body, what NHS and NICE guidance says, and how to get back on track without guilt.

Fatty Liver Disease and Urine Colour: Symptoms to Watch

Weight Loss

min read

Fatty Liver Disease and Urine Colour: Symptoms to Watch

Discover how fatty liver disease affects urine colour, which symptoms signal progression, and when darker urine warrants urgent medical attention. Expert UK guidance on recognising liver-related warning signs.

Does Fatty Liver Cause Rib Pain? Symptoms and When to Seek Help

Weight Loss

min read

Does Fatty Liver Cause Rib Pain? Symptoms and When to Seek Help

Does fatty liver cause rib pain? Discover the connection between hepatic steatosis and rib discomfort, when liver enlargement may cause symptoms, and what other conditions could be responsible for your pain.

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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

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.

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Does Ozempic Cause Numbness and Tingling? 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.

Ozempic Sulphur Burps and Diarrhoea: Causes, Duration and Management

GLP-1 Brands

min read

Ozempic Sulphur Burps and Diarrhoea: Causes, Duration and Management

Ozempic sulphur burps and diarrhoea explained: discover why these gastrointestinal side effects occur, how long they last, effective management strategies, and when to seek medical advice for symptoms.

How to Stop Ozempic Hiccups: Relief and Prevention

GLP-1 Brands

min read

How to Stop Ozempic Hiccups: Relief and Prevention

Discover how to stop Ozempic hiccups with evidence-based techniques, dietary modifications, and medical treatments. Learn when persistent hiccups require clinical assessment and how to manage this uncommon side effect safely.

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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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What Happens If You Take Too Much Sildenafil

Erectile Dysfunction

min read

What Happens If You Take Too Much Sildenafil

Discover what happens if you take too much sildenafil, including serious risks like severe hypotension, priapism, and vision loss. Learn to recognise overdose symptoms and when to seek urgent NHS medical help for sildenafil toxicity.

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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.

Magnesium Sulfate Side Effects: Symptoms, Risks and Safety

Supplements

min read

Magnesium Sulfate Side Effects: Symptoms, Risks and Safety

Discover magnesium sulfate side effects from mild symptoms like flushing to serious complications including respiratory depression. Learn warning signs, who should avoid it, and how UK healthcare teams monitor safety during treatment.

Testosterone

min read

Can Testosterone Treatment Make You Emotional? Effects and Management

Can testosterone treatment make you emotional? Discover how TRT affects mood, common emotional changes during therapy, managing side effects, and when to seek medical advice about mood fluctuations.

Wegovy

min read

Does Wegovy Cause Kidney Stones? Evidence and Prevention

Does Wegovy cause kidney stones? Discover the evidence-based answer, understand the indirect dehydration risk from GLP-1 side effects, and learn practical prevention strategies to protect your kidney health while taking semaglutide for weight management.

Weight Loss

min read

Weight Loss Pills Making You Feel Sick: Causes and UK Advice

Weight loss pills making you feel sick? Learn why nausea happens with semaglutide, orlistat and other UK weight loss medications, how to reduce sickness, and when to seek medical help.

Type 2 Diabetes and Gastric Sleeve Surgery: NHS Guide

Weight Loss

min read

Type 2 Diabetes and Gastric Sleeve Surgery: NHS Guide

Type 2 diabetes and gastric sleeve surgery explained: NHS eligibility criteria, remission rates, medication changes, risks, and long-term follow-up care. Evidence-based UK guidance.

Spinach Vitamin K: Effects on Warfarin and Safe Consumption

Supplements

min read

Spinach Vitamin K: Effects on Warfarin and Safe Consumption

Discover how spinach vitamin K content affects warfarin and anticoagulants. Expert NHS-aligned guidance on safe consumption, INR monitoring, and when to contact your GP about vitamin K intake.

Rybelsus & Birth Control: Safety and Guidance

GLP-1 Brands

min read

Rybelsus & Birth Control: Safety and Guidance

Find out how Rybelsus (semaglutide) may affect contraception, including the pill, and what UK guidance recommends for safe family planning.

Can Weight Loss Injections Cause Headaches? UK Medical Guidance

Wegovy

min read

Can Weight Loss Injections Cause Headaches? UK Medical Guidance

Can weight loss injections cause headaches? Discover which GLP-1 medications are linked to headaches, why they occur, how to manage them safely, and when to seek medical advice. Evidence-based UK guidance for patients.

What Is NAD Good For? Benefits, Safety and UK Guidance

Supplements

min read

What Is NAD Good For? Benefits, Safety and UK Guidance

Discover what NAD is good for, including its role in energy production, metabolic health, and cellular ageing. Learn about NAD+ supplementation, safety, side effects, and UK regulatory status for nicotinamide riboside and NMN.

Can Atorvastatin Cause Gynaecomastia? Evidence, Risks, and Advice

Weight Loss

min read

Can Atorvastatin Cause Gynaecomastia? Evidence, Risks, and Advice

Can atorvastatin cause gynaecomastia? Explore the evidence, biological mechanisms, risk factors, and when to speak to your GP about breast changes whilst taking this statin.

Does Sildenafil Lower Blood Pressure? What You Should Know

Erectile Dysfunction

min read

Does Sildenafil Lower Blood Pressure? What You Should Know

Sildenafil lowers blood pressure through vasodilation. Learn how this affects you, including risks with nitrates, alpha-blockers, and hypertension. UK clinic...

Calorie Deficit for Bariatric Patients: UK Guidelines and Safe Targets

Weight Loss

min read

Calorie Deficit for Bariatric Patients: UK Guidelines and Safe Targets

Calorie deficit for bariatric patients explained: UK guidelines, post-operative intake targets by recovery stage, nutritional risks, and expert advice on working with your bariatric team for safe, long-term weight loss.

Does Tadalafil Cause Acne? Side Effects Explained

Erectile Dysfunction

min read

Does Tadalafil Cause Acne? Side Effects Explained

Acne is not a recognised tadalafil side effect. Find out what UK evidence says about tadalafil and skin reactions, and when to seek medical advice.

Where to Inject Saxenda: UK Injection Site Guide

GLP-1 Brands

min read

Where to Inject Saxenda: UK Injection Site Guide

Find out the approved UK injection sites for Saxenda, how to rotate sites correctly, and why the buttocks are not recommended. Clear subcutaneous guidance.

Bbojitm Thermofirm Bee Gynecomastia Oil: Evidence, Safety, and NHS Treatments

Weight Loss

min read

Bbojitm Thermofirm Bee Gynecomastia Oil: Evidence, Safety, and NHS Treatments

Bbojitm thermofirm bee gynecomastia oil and similar topical products lack clinical evidence. Learn what causes gynaecomastia, why these oils don't work, safety risks, and NHS-recommended treatments.

Bolt Guides

Featured

Supplements for Hair Loss in Females: Evidence, Safety, and NHS Guidance

Weight loss

Is It Okay to Break Your Calorie Deficit for One Day?

Fatty Liver Disease and Urine Colour: Symptoms to Watch

Does Fatty Liver Cause Rib Pain? Symptoms and When to Seek Help

GLP-1 Brands

Wegovy

Mounjaro

Does Ozempic Cause Numbness and Tingling? UK Clinical Guidance

Ozempic vs Mounjaro vs Wegovy Cost: UK Comparison Guide

Ozempic Sulphur Burps and Diarrhoea: Causes, Duration and Management

How to Stop Ozempic Hiccups: Relief and Prevention

Men’s Health

Testosterone

Erectile dysfunction

What Happens If You Take Too Much Sildenafil

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

Magnesium Sulfate Side Effects: Symptoms, Risks and Safety

Can Testosterone Treatment Make You Emotional? Effects and Management

Does Wegovy Cause Kidney Stones? Evidence and Prevention

Weight Loss Pills Making You Feel Sick: Causes and UK Advice

Type 2 Diabetes and Gastric Sleeve Surgery: NHS Guide

Spinach Vitamin K: Effects on Warfarin and Safe Consumption

Rybelsus & Birth Control: Safety and Guidance

Can Weight Loss Injections Cause Headaches? UK Medical Guidance

What Is NAD Good For? Benefits, Safety and UK Guidance

Can Atorvastatin Cause Gynaecomastia? Evidence, Risks, and Advice

Does Sildenafil Lower Blood Pressure? What You Should Know

Calorie Deficit for Bariatric Patients: UK Guidelines and Safe Targets

Does Tadalafil Cause Acne? Side Effects Explained

Where to Inject Saxenda: UK Injection Site Guide

Bbojitm Thermofirm Bee Gynecomastia Oil: Evidence, Safety, and NHS Treatments

Personalized weight management for women