Bolt Guides

Expert insights on weight loss and more.

Featured

Retatrutide Side Effects and Libido: What the Evidence Shows

GLP-1 Brands

min read

Retatrutide Side Effects and Libido: What the Evidence Shows

Retatrutide side effects and libido changes explained — discover what Phase 2 trial data reveals, why sexual health effects remain unconfirmed, and when to speak to a UK GP or specialist.

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Weight loss

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Gynaecomastia: What It Looks Like, Causes, and NHS Treatment

Weight Loss

min read

Gynaecomastia: What It Looks Like, Causes, and NHS Treatment

Wondering what gynaecomastia looks like? Learn to recognise the signs — from subareolar swelling to firm disc-like tissue — and understand causes, diagnosis, and NHS treatment options.

What Can You Never Eat Again After Gastric Sleeve Surgery?

Weight Loss

min read

What Can You Never Eat Again After Gastric Sleeve Surgery?

What can you never eat again after gastric sleeve surgery? Discover which foods to avoid, why they cause problems, and essential NHS dietary guidance for long-term health after sleeve gastrectomy.

Low Blood Pressure After Gastric Sleeve: Causes, Symptoms & Management

Weight Loss

min read

Low Blood Pressure After Gastric Sleeve: Causes, Symptoms & Management

Low blood pressure after gastric sleeve surgery — find out why it happens, how to recognise symptoms, when to seek NHS medical advice, and how to manage your medications and recovery safely.

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.

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Mounjaro

Answer all your questions about Mounjaro treatments for weight loss.

Read Mounjaro guides

GLP-1 Brands

min read

Retatrutide Side Effects and Libido: What the Evidence Shows

Retatrutide side effects and libido changes explained — discover what Phase 2 trial data reveals, why sexual health effects remain unconfirmed, and when to speak to a UK GP or specialist.

Read now

Retatrutide for Muscle Growth: Evidence, Safety, and UK Availability

GLP-1 Brands

min read

Retatrutide for Muscle Growth: Evidence, Safety, and UK Availability

Retatrutide for muscle growth: find out what the clinical evidence actually shows, its unlicensed status in the UK, safety risks, and NICE-approved alternatives for body composition.

Retatrutide Mechanism of Action: Triple Hormone Receptor Agonist Explained

GLP-1 Brands

min read

Retatrutide Mechanism of Action: Triple Hormone Receptor Agonist Explained

Retatrutide's mechanism of action as a triple hormone receptor agonist explained — how GLP-1, GIP, and glucagon pathways work together, what Phase 2 trials show, and its current UK regulatory status.

Retatrutide and Diarrhoea: Evidence, Frequency, and Safe Management

GLP-1 Brands

min read

Retatrutide and Diarrhoea: Evidence, Frequency, and Safe Management

Does retatrutide cause diarrhoea? Phase 2 trial data confirm it does, especially at higher doses. Learn how common it is, what triggers it, and when to seek medical advice.

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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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Erectile Dysfunction

min read

Does Silodosin Help with Erectile Dysfunction? UK Medical Facts

Does silodosin help with erectile dysfunction? Discover the facts about this BPH medication, its effects on sexual function, and evidence-based treatments for ED. Essential UK guidance for men's health.

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Can I Use Testogel When I Come Off Steroids? UK Medical Guidance

Testosterone

min read

Can I Use Testogel When I Come Off Steroids? UK Medical Guidance

Can I use Testogel when I come off steroids? Discover why Testogel is generally not recommended immediately after stopping anabolic steroids, when it might be appropriate, and what medical assessment is required. UK guidance on testosterone recovery and safer alternatives explained.

Testosterone

min read

Does Testogel Work for Men with Low Testosterone?

Does Testogel work for men with low testosterone? Discover how this UK-licensed transdermal gel treats hypogonadism, clinical evidence for its effectiveness, expected results timeline, who benefits most, and essential safety considerations for informed treatment decisions.

TRT Side Effects: Does It Affect Flexibility?

Testosterone

min read

TRT Side Effects: Does It Affect Flexibility?

Does TRT affect flexibility? Learn how testosterone replacement therapy impacts muscle and range of motion, plus tips to stay supple.

Do NAD Patches Work? Evidence and Safety Review

Supplements

min read

Do NAD Patches Work? Evidence and Safety Review

Do NAD patches work? Discover what the science says about NAD+ patches, their claimed benefits, safety concerns, and UK regulatory status. Evidence-based guidance for consumers considering transdermal NAD+ supplementation.

Best Oil for a Calorie Deficit: Nutrition, Calories, and UK Guidance

Weight Loss

min read

Best Oil for a Calorie Deficit: Nutrition, Calories, and UK Guidance

Best oil for a calorie deficit — compare calories, fat profiles, and UK dietary guidance to choose the healthiest cooking oil for weight loss without sacrificing nutrition.

Erectile Dysfunction

min read

Does Metoprolol Cause Erectile Dysfunction? UK Guide

Does metoprolol cause erectile dysfunction? Discover the link between this beta-blocker and ED, how common it is, management options including PDE5 inhibitors, alternative medications, and when to speak to your GP about sexual side effects.

Why Is Rybelsus Not as Popular? UK Prescribing Challenges

GLP-1 Brands

min read

Why Is Rybelsus Not as Popular? UK Prescribing Challenges

Discover why Rybelsus is not as popular despite being the first oral GLP-1 receptor agonist. Learn about dosing challenges, NHS availability, cost factors, and how it compares to other type 2 diabetes treatments in UK clinical practice.

Does Magnesium Cause Diarrhea? How to Prevent & Fix It

Supplements

min read

Does Magnesium Cause Diarrhea? How to Prevent & Fix It

Learn why magnesium causes diarrhea, which types are gentler on your stomach, and how to stop it. Plus: should you stop taking it? UK guide.

Third Party Tested Whey Protein Powder: UK Certification Guide

Supplements

min read

Third Party Tested Whey Protein Powder: UK Certification Guide

Discover how third party tested whey protein powder provides independent verification of quality and safety. Learn which UK certifications matter, how to choose verified products, and why independent testing protects athletes and consumers from contamination and label inaccuracy.

Best Allergy Medication for Ragweed: UK Treatment Guide

Supplements

min read

Best Allergy Medication for Ragweed: UK Treatment Guide

Best allergy medication for ragweed in the UK — compare antihistamines, nasal sprays, and combination treatments. Backed by NICE, BSACI, and MHRA guidance. Find out what works and when to see a GP.

Vitamin C in Obesity Treatment and Prevention: UK Evidence Review

Weight Loss

min read

Vitamin C in Obesity Treatment and Prevention: UK Evidence Review

Explore the evidence for vitamin C in the treatment and prevention of obesity. Learn about biological mechanisms, clinical research, UK guidance, and why vitamin C supplementation is not recommended as a standalone weight management strategy.

Hair Loss

min read

Does Mirtazapine Cause Hair Loss? UK Guide to This Side Effect

Does mirtazapine cause hair loss? Learn how common this rare side effect is, why it happens, what UK guidelines recommend, and what to do if you notice hair thinning on mirtazapine.

Food Rich in Selenium and Zinc: Top Sources and Daily Requirements

Supplements

min read

Food Rich in Selenium and Zinc: Top Sources and Daily Requirements

Discover the best food rich in selenium and zinc to support immune health, thyroid function, and cellular metabolism. Learn daily requirements, top dietary sources, deficiency signs, and practical meal ideas aligned with NHS guidance for optimal mineral intake through diet.

Hair Loss

min read

Can Eliquis Cause Hair Loss? Apixaban, Alopecia & What to Do

Can Eliquis cause hair loss? Find out what the clinical evidence says about apixaban and alopecia, other likely causes, and when to speak to your GP or anticoagulation clinic.

Is Metabolism Genetic? Genes, Lifestyle and Metabolic Rate

Weight Loss

min read

Is Metabolism Genetic? Genes, Lifestyle and Metabolic Rate

Is metabolism genetic? Discover how genes and lifestyle factors influence your metabolic rate. Learn evidence-based strategies to optimise metabolism regardless of genetic inheritance, including exercise, nutrition, and medical considerations for UK patients.

Metabolically Healthy Obesity: The Low-Hanging Fruit in Obesity Treatment

Weight Loss

min read

Metabolically Healthy Obesity: The Low-Hanging Fruit in Obesity Treatment

Is metabolically healthy obesity the low-hanging fruit in obesity treatment? Discover what MHO means, who qualifies, long-term risks, and evidence-based NHS approaches to prevent metabolic decline in people with obesity but normal metabolic markers.

HbA1c Diabetes Cut-Off: NHS Thresholds, Prediabetes and Next Steps

Weight Loss

min read

HbA1c Diabetes Cut-Off: NHS Thresholds, Prediabetes and Next Steps

HbA1c diabetes cut-off explained: understand the NHS and NICE thresholds for prediabetes and type 2 diabetes, what affects accuracy, and what to do after an abnormal result.

Do You Have to Pinch Skin for Ozempic Injections?

GLP-1 Brands

min read

Do You Have to Pinch Skin for Ozempic Injections?

Do you have to pinch skin for Ozempic injections? Learn when skin pinching is necessary, proper injection technique with 4 mm needles, and how to safely administer semaglutide at home for type 2 diabetes management.

Bolt Guides

Featured

Retatrutide Side Effects and Libido: What the Evidence Shows

Weight loss

Gynaecomastia: What It Looks Like, Causes, and NHS Treatment

What Can You Never Eat Again After Gastric Sleeve Surgery?

Low Blood Pressure After Gastric Sleeve: Causes, Symptoms & Management

GLP-1 Brands

Wegovy

Mounjaro

Retatrutide Side Effects and Libido: What the Evidence Shows

Retatrutide for Muscle Growth: Evidence, Safety, and UK Availability

Retatrutide Mechanism of Action: Triple Hormone Receptor Agonist Explained

Retatrutide and Diarrhoea: Evidence, Frequency, and Safe Management

Men’s Health

Testosterone

Erectile dysfunction

Does Silodosin Help with Erectile Dysfunction? UK Medical Facts

Can I Use Testogel When I Come Off Steroids? UK Medical Guidance

Does Testogel Work for Men with Low Testosterone?

TRT Side Effects: Does It Affect Flexibility?

Browse all

Do NAD Patches Work? Evidence and Safety Review

Best Oil for a Calorie Deficit: Nutrition, Calories, and UK Guidance

Does Metoprolol Cause Erectile Dysfunction? UK Guide

Why Is Rybelsus Not as Popular? UK Prescribing Challenges

Does Magnesium Cause Diarrhea? How to Prevent & Fix It

Third Party Tested Whey Protein Powder: UK Certification Guide

Best Allergy Medication for Ragweed: UK Treatment Guide

Vitamin C in Obesity Treatment and Prevention: UK Evidence Review

Does Mirtazapine Cause Hair Loss? UK Guide to This Side Effect

Food Rich in Selenium and Zinc: Top Sources and Daily Requirements

Can Eliquis Cause Hair Loss? Apixaban, Alopecia & What to Do

Is Metabolism Genetic? Genes, Lifestyle and Metabolic Rate

Metabolically Healthy Obesity: The Low-Hanging Fruit in Obesity Treatment

HbA1c Diabetes Cut-Off: NHS Thresholds, Prediabetes and Next Steps

Do You Have to Pinch Skin for Ozempic Injections?

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