Bolt Guides

Expert insights on weight loss and more.

Featured

Does B12 Make Joints Ache? Evidence and Guidance

Supplements

min read

Does B12 Make Joints Ache? Evidence and Guidance

Does B12 make joints ache? Discover the evidence on vitamin B12 and joint pain, why some people report discomfort, and when to seek medical advice. Expert UK guidance on managing symptoms whilst taking B12 supplements.

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Weight loss

Read all on weight loss

50 mmol/mol HbA1c: Diagnosis, Targets, and Next Steps

Weight Loss

min read

50 mmol/mol HbA1c: Diagnosis, Targets, and Next Steps

50 mmol/mol HbA1c explained: what this result means, UK diagnostic criteria, NICE targets, lifestyle changes, medication options, and when to see your GP.

Why Is My HbA1c Going Up? Causes, Medicines, and Next Steps

Weight Loss

min read

Why Is My HbA1c Going Up? Causes, Medicines, and Next Steps

Why is my HbA1c going up? Discover the common causes of a rising HbA1c — from diet and lifestyle to medicines and medical conditions — plus NHS-aligned advice on when to see your GP and how to lower it safely.

Normal HbA1c Levels for Diabetes: UK Thresholds and Targets Explained

Weight Loss

min read

Normal HbA1c Levels for Diabetes: UK Thresholds and Targets Explained

Normal HbA1c levels for diabetes explained: UK thresholds, NICE targets, what affects your result, and how to work with your GP to manage blood glucose effectively.

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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.

Read Mounjaro guides

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.

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Ozempic and Hiatal Hernia: Management and Safety Guidance

Food Poisoning While on Ozempic: Symptoms, Management and When to Seek Help

GLP-1 Brands

min read

Food Poisoning While on Ozempic: Symptoms, Management and When to Seek Help

Concerned about food poisoning while on Ozempic? Learn how to distinguish medication side effects from genuine foodborne illness, manage symptoms safely, recognise warning signs requiring urgent medical attention, and prevent complications. Expert UK guidance for diabetes patients.

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.

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.

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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

Do Extenders Help with Erectile Dysfunction? Evidence and Safety

Do extenders help with erectile dysfunction? Discover what the clinical evidence reveals about penis extenders for ED, how they compare to proven treatments like PDE5 inhibitors, and the safety considerations you need to know before trying mechanical traction devices.

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Testosterone

min read

Can Testosterone Treatment Cause Heart Palpitations? UK Guide

Can testosterone treatment cause heart palpitations? Discover the cardiovascular effects of TRT, risk factors, warning signs, and when to seek medical advice. Expert guidance on safe monitoring and management during testosterone therapy.

Testosterone

min read

Does Testosterone Treatment Cause Muscle Pain? UK Evidence & Guidance

Does testosterone treatment cause muscle pain? Discover the evidence on muscle discomfort during TRT, including causes, when to seek help, and how to manage symptoms safely. Expert UK guidance for patients and clinicians.

Testosterone

min read

Will Hair Grow Back After Testosterone Treatment? Evidence and Options

Will hair grow back after testosterone treatment? Discover how testosterone affects hair growth, whether regrowth is possible after stopping therapy, and evidence-based treatment options for testosterone-related hair loss.

Bread for Calorie Deficit: Best Choices and Practical Tips

Weight Loss

min read

Bread for Calorie Deficit: Best Choices and Practical Tips

Bread for a calorie deficit doesn't have to be off the menu. Discover which breads are best for weight loss, how to compare calories and fibre, and practical tips for including bread in a calorie-controlled diet.

Medication for Grass Allergy: NHS-Recommended Treatments Explained

Supplements

min read

Medication for Grass Allergy: NHS-Recommended Treatments Explained

Medication for grass allergy explained — from NHS-recommended antihistamines and nasal sprays to immunotherapy. Find out which treatments work best, how to use them safely, and when to see a GP.

D-Aspartic Acid and Gynaecomastia: Risks, Evidence, and NHS Guidance

Weight Loss

min read

D-Aspartic Acid and Gynaecomastia: Risks, Evidence, and NHS Guidance

D-aspartic acid and gynaecomastia: could this popular testosterone supplement cause male breast tissue growth? Explore the evidence, risks, NHS guidance, and when to see your GP.

Exercise After Gastric Sleeve Surgery: Safe Recovery and Fitness Guide

Weight Loss

min read

Exercise After Gastric Sleeve Surgery: Safe Recovery and Fitness Guide

Exercise after gastric sleeve surgery: discover when to start, which activities are safe, what to avoid, and how to build fitness gradually in line with NHS and NICE guidance.

Feeling Full on a Calorie Deficit: Is It Normal and What It Means

Weight Loss

min read

Feeling Full on a Calorie Deficit: Is It Normal and What It Means

Is it normal to feel full on a calorie deficit? Yes — and it often means your diet is working. Discover the science behind satiety, the best filling foods, and when to see your GP.

Weight Gain After Gastric Sleeve: Causes, Risks & NHS Treatment Options

Weight Loss

min read

Weight Gain After Gastric Sleeve: Causes, Risks & NHS Treatment Options

Weight gain after gastric sleeve surgery affects many patients over time. Learn about the causes, what's considered normal, and NHS treatment options available to help you manage weight regain effectively.

Life Flo Magnesium Lotion: Uses, Benefits, and Safety Guide

Supplements

min read

Life Flo Magnesium Lotion: Uses, Benefits, and Safety Guide

Discover what Life Flo Magnesium Lotion is, how topical magnesium works, its claimed benefits for muscle relaxation and skin health, safe usage guidelines, potential side effects, and important UK regulatory considerations for this cosmetic product.

Methotrexate and Allergy Medication: What Is Safe to Take?

Supplements

min read

Methotrexate and Allergy Medication: What Is Safe to Take?

Methotrexate and allergy medication: find out which antihistamines, nasal sprays, and corticosteroids are safe to use together, what to avoid, and what NICE and MHRA guidance recommends for UK patients.

Gynaecomastia: How Common Is It and What Are Your Options

Weight Loss

min read

Gynaecomastia: How Common Is It and What Are Your Options

How common is gynaecomastia? It affects up to 65% of men at some point in their lives. Learn about causes, when to see a GP, diagnosis, and NHS treatment options.

Mounjaro

min read

Mounjaro and Ovarian Cysts: Safety, Effects and When to Seek Help

Discover the relationship between Mounjaro and ovarian cysts. Learn how tirzepatide affects reproductive hormones, when to seek medical advice, and essential safety information for women using this weight management medication.

Best Time to Take GLP-1: Morning or Night? (UK Guide)

Weight Loss

min read

Best Time to Take GLP-1: Morning or Night? (UK Guide)

Find the best time to take your GLP-1 shot or supplement. Evidence-based timing guidance for semaglutide, retatrutide & more to reduce side effects.

MCT Oil and Fatty Liver: Evidence, Safety, and Management

Weight Loss

min read

MCT Oil and Fatty Liver: Evidence, Safety, and Management

Can MCT oil help or harm fatty liver disease? Discover how MCT oil is metabolised, the evidence for its use in NAFLD, safe dosing guidance, potential side effects, and proven lifestyle strategies for managing fatty liver in the UK.

Mounjaro

min read

Does Mounjaro Insomnia Go Away? UK Medical Guide

Does Mounjaro insomnia go away? Learn about sleep disturbances with tirzepatide, how long they typically last, and evidence-based strategies to manage sleep problems whilst taking this diabetes and weight management medication.

Testosterone

min read

What Is hCG Treatment for Low Testosterone in the UK?

Discover what hCG treatment for low testosterone involves, who may benefit, and how it differs from standard testosterone replacement therapy. Learn about UK prescribing, fertility preservation, potential risks, and accessing specialist care through the NHS or privately.

Is It Safe to Eat Tuna Every Day? UK Guidelines

Supplements

min read

Is It Safe to Eat Tuna Every Day? UK Guidelines

Is it safe to eat tuna every day? Discover UK guidance on tuna consumption, mercury levels, health risks, and safer alternatives. Expert advice from FSA and NHS recommendations for adults, pregnant women, and children.

Bolt Guides

Featured

Does B12 Make Joints Ache? Evidence and Guidance

Weight loss

50 mmol/mol HbA1c: Diagnosis, Targets, and Next Steps

Why Is My HbA1c Going Up? Causes, Medicines, and Next Steps

Normal HbA1c Levels for Diabetes: UK Thresholds and Targets Explained

GLP-1 Brands

Wegovy

Mounjaro

Ozempic and Hiatal Hernia: Management and Safety Guidance

Food Poisoning While on Ozempic: Symptoms, Management and When to Seek Help

Restarting Ozempic After Surgery: When & How to Resume

Does Ozempic Cause Numbness and Tingling? UK Clinical Guidance

Men’s Health

Testosterone

Erectile dysfunction

Do Extenders Help with Erectile Dysfunction? Evidence and Safety

Can Testosterone Treatment Cause Heart Palpitations? UK Guide

Does Testosterone Treatment Cause Muscle Pain? UK Evidence & Guidance

Will Hair Grow Back After Testosterone Treatment? Evidence and Options

Browse all

Bread for Calorie Deficit: Best Choices and Practical Tips

Medication for Grass Allergy: NHS-Recommended Treatments Explained

D-Aspartic Acid and Gynaecomastia: Risks, Evidence, and NHS Guidance

Exercise After Gastric Sleeve Surgery: Safe Recovery and Fitness Guide

Feeling Full on a Calorie Deficit: Is It Normal and What It Means

Weight Gain After Gastric Sleeve: Causes, Risks & NHS Treatment Options

Life Flo Magnesium Lotion: Uses, Benefits, and Safety Guide

Methotrexate and Allergy Medication: What Is Safe to Take?

Gynaecomastia: How Common Is It and What Are Your Options

Mounjaro and Ovarian Cysts: Safety, Effects and When to Seek Help

Best Time to Take GLP-1: Morning or Night? (UK Guide)

MCT Oil and Fatty Liver: Evidence, Safety, and Management

Does Mounjaro Insomnia Go Away? UK Medical Guide

What Is hCG Treatment for Low Testosterone in the UK?

Is It Safe to Eat Tuna Every Day? UK Guidelines

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