Bolt Guides

Expert insights on weight loss and more.

Featured

Why Do I Feel Worse After My B12 Injection? Causes & Management

Supplements

min read

Why Do I Feel Worse After My B12 Injection? Causes & Management

Discover why you might feel worse after a B12 injection, including metabolic adjustment, common side effects, and when to seek medical advice. Expert guidance on managing post-injection symptoms safely.

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Weight loss

Read all on weight loss

GLP-1 & SGLT2 Inhibitor Combination Therapy

Weight Loss

min read

GLP-1 & SGLT2 Inhibitor Combination Therapy

Discover how combining GLP-1 agonists with SGLT2 inhibitors may improve glycaemic control and support cardiovascular health.

How to Wean Off GLP-1 Medications Safely

Weight Loss

min read

How to Wean Off GLP-1 Medications Safely

Should you taper GLP-1 drugs like semaglutide before stopping? Get UK clinical guidance on how to discontinue treatment safely.

What Age Does Metabolism Slow Down in Men?

Weight Loss

min read

What Age Does Metabolism Slow Down in Men?

Find out when metabolism slows down in men, why muscle loss matters more than age, and what you can do to support your metabolic health.

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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

Does Victoza Cause Diarrhoea? Causes & Management

Diarrhoea affects more than 1 in 10 Victoza users. Learn why liraglutide causes this side effect, how to manage it, and when to contact your GP.

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Does Victoza Cause Diarrhoea? Causes & Management

Does Victoza Need Refrigerating? Storage Guide

GLP-1 Brands

min read

Does Victoza Need Refrigerating? Storage Guide

Find out how long Victoza (liraglutide) can be kept out of the fridge, safe room temperature limits, and how to store your pen correctly. UK guidance.

Victoza After Opening: Storage & 30-Day Guide

GLP-1 Brands

min read

Victoza After Opening: Storage & 30-Day Guide

Does Victoza need refrigerating after opening? Learn the 30-day use rule, correct storage temperatures, and signs of degradation for safe liraglutide use.

Why Does My Urine Smell? Causes & When to Act

GLP-1 Brands

min read

Why Does My Urine Smell? Causes & When to Act

Smelly urine can have many causes — from diet and hydration to infections or blood sugar changes. Learn what's normal and when to seek medical advice.

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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

Sildenafil & PDE5 Inhibitors: UK Clinical Guide

Erectile Dysfunction

min read

Sildenafil & PDE5 Inhibitors: UK Clinical Guide

Learn how sildenafil works as a PDE5 inhibitor, its licensed uses for erectile dysfunction and pulmonary hypertension, and key UK prescribing guidance.

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Testosterone

min read

Testosterone Booster for Gynaecomastia: Evidence, Risks and UK Treatment Options

Testosterone booster for gynaecomastia — does it work? Explore the evidence, safety risks, MHRA and NHS guidance, and clinically recognised UK treatment options for enlarged male breast tissue.

Testosterone

min read

How to Treat Rash From Testosterone Treatment: Expert Guide

Discover how to treat rash from testosterone treatment with expert guidance on identifying skin reactions, immediate management steps, medical treatments, and prevention strategies to continue TRT safely and comfortably.

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.

Is Tadalafil Safe with Alcohol? NHS Guidance and Safe Limits

Erectile Dysfunction

min read

Is Tadalafil Safe with Alcohol? NHS Guidance and Safe Limits

Is tadalafil safe with alcohol? Discover NHS guidance on combining tadalafil with alcohol, safe drinking limits, potential risks, and how to minimise side effects whilst taking this erectile dysfunction medication.

Salmon Fish Health Benefits: Evidence-Based Nutrition Guide UK

Supplements

min read

Salmon Fish Health Benefits: Evidence-Based Nutrition Guide UK

Discover the evidence-based salmon fish health benefits, from heart and brain support to omega-3 fatty acids. Learn NHS-recommended portions, nutritional facts, safe preparation methods, and how this oily fish fits into a balanced UK diet for optimal wellbeing.

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.

Calorie Deficit Always Cold: Causes, Management and When to See a GP

Weight Loss

min read

Calorie Deficit Always Cold: Causes, Management and When to See a GP

Calorie deficit always cold? Find out why eating less makes you feel chilly, how your body regulates temperature during weight loss, and when to see a GP about persistent cold sensitivity.

Hair Loss

min read

Vegetarian Diet and Hair Loss: Causes, Nutrients, and Solutions

Vegetarian and hair loss: discover which nutritional deficiencies can cause hair thinning on a plant-based diet, how to get tested, and evidence-based dietary tips to support healthy hair growth.

Weight Loss

min read

Best Garcinia Weight Loss Pills: Evidence, Safety, and UK Guidance

Best garcinia weight loss pills reviewed: what the evidence really shows, UK safety warnings, MHRA regulation, and NHS-recommended alternatives for sustainable weight loss.

How Much Testogel Should a Woman Take? UK Dosing Guide

Testosterone

min read

How Much Testogel Should a Woman Take? UK Dosing Guide

Discover how much Testogel women should take in the UK, including safe dosing guidelines, application techniques, monitoring requirements, and potential side effects. Expert advice on off-label testosterone therapy for low sexual desire in postmenopausal women.

Erectile Dysfunction

min read

Does Lion's Mane Help with Erectile Dysfunction? UK Evidence Review

Does lion's mane help with erectile dysfunction? Explore the current evidence, proposed mechanisms, safety concerns, and proven NHS treatment options for ED in this comprehensive UK medical guide.

Mounjaro

min read

Mounjaro and Smoking Weed: UK Clinical Guidance

Can you use Mounjaro and smoke weed safely? Discover the clinical evidence on tirzepatide and cannabis interactions, potential risks to diabetes control and weight loss, and essential UK medical guidance for patients combining these substances.

GLP-1 Agonist Side Effects: Pancreatitis Risk and Safety Guidance

Weight Loss

min read

GLP-1 Agonist Side Effects: Pancreatitis Risk and Safety Guidance

Concerned about GLP-1 agonist side effects and pancreatitis? Discover the evidence, warning signs, and safety precautions for semaglutide, liraglutide, and other GLP-1 medications. Essential UK guidance for patients and clinicians.

How Much Carob to Take for Obesity Treatment: Doses and Evidence

Weight Loss

min read

How Much Carob to Take for Obesity Treatment: Doses and Evidence

How much carob should you take for obesity treatment? Explore the amounts used in research studies, clinical evidence for weight management, mechanisms of action, safety considerations, and why carob is not a licensed obesity medicine in the UK.

Iron Deficiency on Saxenda: Symptoms & Management

GLP-1 Brands

min read

Iron Deficiency on Saxenda: Symptoms & Management

Using Saxenda? Spot low iron symptoms, support ferritin levels and know when to seek NHS advice. Practical UK guidance for safe weight management.

Hair Loss

min read

Normal Hair Loss in the Shower: What's Typical and When to Seek Help

Wondering what's a normal amount of hair loss in the shower? NHS-aligned guidance explains the 50–100 hairs per day rule, what causes increased shedding, and when to see your GP.

Weight Loss

min read

Weight Loss Per Day Calorie Deficit: NHS-Aligned Guide

Weight loss per day from a calorie deficit explained — learn how much fat you can realistically lose, how to calculate a safe deficit, and what NHS and NICE guidelines recommend.

Erectile Dysfunction

min read

Are Tomatoes Good for Erectile Dysfunction? Evidence and Advice

Are tomatoes good for erectile dysfunction? Discover how tomatoes' nutrients support vascular health, the evidence behind dietary approaches for ED, and when to seek medical advice for erectile difficulties.

Bolt Guides

Featured

Why Do I Feel Worse After My B12 Injection? Causes & Management

Weight loss

GLP-1 & SGLT2 Inhibitor Combination Therapy

How to Wean Off GLP-1 Medications Safely

What Age Does Metabolism Slow Down in Men?

GLP-1 Brands

Wegovy

Mounjaro

Does Victoza Cause Diarrhoea? Causes & Management

Does Victoza Need Refrigerating? Storage Guide

Victoza After Opening: Storage & 30-Day Guide

Why Does My Urine Smell? Causes & When to Act

Men’s Health

Testosterone

Erectile dysfunction

Sildenafil & PDE5 Inhibitors: UK Clinical Guide

Testosterone Booster for Gynaecomastia: Evidence, Risks and UK Treatment Options

How to Treat Rash From Testosterone Treatment: Expert Guide

Calorie Deficit Effect on Testosterone: What the Evidence Shows

Browse all

Is Tadalafil Safe with Alcohol? NHS Guidance and Safe Limits

Salmon Fish Health Benefits: Evidence-Based Nutrition Guide UK

Does Mounjaro Insomnia Go Away? UK Medical Guide

Calorie Deficit Always Cold: Causes, Management and When to See a GP

Vegetarian Diet and Hair Loss: Causes, Nutrients, and Solutions

Best Garcinia Weight Loss Pills: Evidence, Safety, and UK Guidance

How Much Testogel Should a Woman Take? UK Dosing Guide

Does Lion's Mane Help with Erectile Dysfunction? UK Evidence Review

Mounjaro and Smoking Weed: UK Clinical Guidance

GLP-1 Agonist Side Effects: Pancreatitis Risk and Safety Guidance

How Much Carob to Take for Obesity Treatment: Doses and Evidence

Iron Deficiency on Saxenda: Symptoms & Management

Normal Hair Loss in the Shower: What's Typical and When to Seek Help

Weight Loss Per Day Calorie Deficit: NHS-Aligned Guide

Are Tomatoes Good for Erectile Dysfunction? Evidence and Advice

Personalized weight management for women