Bolt Guides

When can you eat salad after gastric sleeve surgery? Find out the recommended timeline, safest ingredients, foods to avoid, and expert NHS-aligned tips for reintroducing raw foods comfortably.

Weight Loss

min read

Gastric Sleeve Weight Loss Calculator: Results, Eligibility & Recovery Planning

Use a gastric sleeve weight loss calculator to estimate your results after sleeve gastrectomy. Learn how these tools work, NHS eligibility criteria, and expert recovery planning advice.

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

How Long Does Rybelsus Stay in Your System?

How long does Rybelsus stay in your system? Discover the elimination timeline, factors affecting clearance, and what happens when you stop taking this type 2 diabetes medication.

Read now

What Is Ozempic Personality? Mood Changes and Semaglutide

GLP-1 Brands

min read

What Is Ozempic Personality? Mood Changes and Semaglutide

What is Ozempic personality? Explore reported mood and behavioural changes with semaglutide, the scientific evidence, and when to speak to your GP about side effects whilst taking Ozempic for type 2 diabetes.

What Does Trulicity Do to Your Body? Effects Explained

GLP-1 Brands

min read

What Does Trulicity Do to Your Body? Effects Explained

Discover what Trulicity does to your body, including how this GLP-1 receptor agonist lowers blood sugar, affects weight and appetite, and impacts long-term health in type 2 diabetes management.

Saxenda & Blood Donation: UK Eligibility Guide

GLP-1 Brands

min read

Saxenda & Blood Donation: UK Eligibility Guide

Taking Saxenda and want to give blood? Learn UK eligibility rules from NHSBT, what liraglutide means for donors, and when to seek advice before donating.

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

Trans Women & Erectile Function: UK Guide

Erectile Dysfunction

min read

Trans Women & Erectile Function: UK Guide

Learn how hormone therapy affects erections in trans women, whether Viagra is suitable, and what support is available through the NHS.

Read now

Testosterone

min read

How Often Should Testosterone Be Checked When Using Testogel?

Find out how often testosterone levels should be checked when using Testogel. Learn about UK monitoring schedules, blood tests, safety checks, and signs your dose may need adjusting under NHS guidelines.

Where to Put Testogel for Women: Safe Application Sites

Testosterone

min read

Where to Put Testogel for Women: Safe Application Sites

Discover where to put Testogel safely if you're a woman prescribed this off-label testosterone therapy. Learn the recommended application sites, step-by-step technique, and essential safety precautions to optimise treatment and minimise risks.

Testosterone

min read

Can Testosterone Cause Gynaecomastia? Symptoms, Risks & NHS Treatment

Can testosterone cause gynaecomastia? Learn how testosterone converts to oestrogen, who is most at risk, how to spot symptoms, and what NHS treatment options are available.

Wegovy

min read

What to Avoid on Wegovy: UK Medical Guidance

Discover what to avoid on Wegovy to maximise weight loss results and reduce side effects. Expert UK guidance on foods, medications, lifestyle factors, and when to seek medical advice whilst taking semaglutide.

Does Coke Zero Cause Fatty Liver? Evidence and Guidance

Weight Loss

min read

Does Coke Zero Cause Fatty Liver? Evidence and Guidance

Does Coke Zero cause fatty liver disease? Explore the evidence on artificial sweeteners, liver health, and metabolism. Learn what UK guidance says and discover practical steps to protect your liver with expert medical advice.

Does Ozempic Cause Dark Stools? UK Medical Guidance

GLP-1 Brands

min read

Does Ozempic Cause Dark Stools? UK Medical Guidance

Does Ozempic cause dark stools? Discover whether semaglutide affects stool colour, when dark stools require urgent medical attention, and how to manage gastrointestinal side effects safely whilst taking Ozempic for type 2 diabetes.

Erectile Dysfunction

min read

Does Salt Help with Erectile Dysfunction? Evidence and Facts

Does salt help with erectile dysfunction? Discover the truth about salt and ED, why excess sodium may worsen erectile function, and evidence-based dietary approaches that genuinely support vascular and sexual health.

Testosterone

min read

Does PBM Red Light Therapy Help Improve Testosterone in Men?

Does PBM red light therapy help improve testosterone in men? Explore the current evidence, safety considerations, and proven alternatives for supporting male hormonal health in this comprehensive UK clinical guide.

Retatrutide Heart Rate Increase: Mechanism, Evidence, and Clinical Guidance

GLP-1 Brands

min read

Retatrutide Heart Rate Increase: Mechanism, Evidence, and Clinical Guidance

Retatrutide heart rate increase explained: understand the mechanism, Phase 2 trial evidence, who is most at risk, and when to seek medical advice. UK-focused clinical guidance.

Can I Take Collagen with Fatty Liver? Safety and Guidance

Weight Loss

min read

Can I Take Collagen with Fatty Liver? Safety and Guidance

Can I take collagen with fatty liver? Discover the safety considerations, potential effects on liver health, and when to consult your GP before taking collagen supplements if you have fatty liver disease.

Does Sugar Slow Metabolism? What the Evidence Shows

Weight Loss

min read

Does Sugar Slow Metabolism? What the Evidence Shows

Sugar doesn't directly slow metabolism, but excess intake may affect insulin and energy balance. Discover what the evidence really shows.

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.

How Much Fish Oil Per Day: UK Dosage Guidelines

Supplements

min read

How Much Fish Oil Per Day: UK Dosage Guidelines

Discover how much fish oil per day you should take based on UK guidance. Learn about recommended omega-3 doses, safety limits, and when to consult your GP about fish oil supplementation.

Cod Fish Health Benefits: Nutrition and Evidence-Based Advantages

Supplements

min read

Cod Fish Health Benefits: Nutrition and Evidence-Based Advantages

Discover the evidence-based cod fish health benefits, from high-quality protein and vitamin B12 to iodine for thyroid function. Learn how this lean white fish supports heart health, weight management, and nutritional adequacy within UK dietary guidelines.

Can You Take Magnesium Every Day? UK Safety Guidance

Supplements

min read

Can You Take Magnesium Every Day? UK Safety Guidance

Can you take magnesium every day safely? Discover UK guidance on daily magnesium supplementation, recommended doses, benefits, side effects, and who should consider supplements. Expert advice on safe use.

Erectile Dysfunction

min read

Does Pepcid Cause Erectile Dysfunction? Evidence and Guidance

Does Pepcid (famotidine) cause erectile dysfunction? Explore the evidence, understand how this H2 blocker differs from cimetidine, and learn what to do if you experience sexual side effects whilst taking famotidine.

Is Cabbage Good for Fatty Liver? Evidence and Dietary Guidance

Weight Loss

min read

Is Cabbage Good for Fatty Liver? Evidence and Dietary Guidance

Discover whether cabbage is good for fatty liver disease. Learn about the evidence, nutritional benefits, and how to include cabbage in a liver-supportive diet recommended by UK guidance.

Loose Skin After Sleeve Gastrectomy: Causes, Management & NHS Surgery

Weight Loss

min read

Loose Skin After Sleeve Gastrectomy: Causes, Management & NHS Surgery

Loose skin after sleeve gastrectomy is common following gastric sleeve surgery. Learn why it happens, what affects severity, and how to access NHS body contouring surgery in the UK.

Bolt Guides

Featured

What Is RMR? Resting Metabolic Rate Explained

Weight loss

What Is RMR? Resting Metabolic Rate Explained

When Can I Eat Salad After Gastric Sleeve Surgery?

Gastric Sleeve Weight Loss Calculator: Results, Eligibility & Recovery Planning

GLP-1 Brands

Wegovy

Mounjaro

How Long Does Rybelsus Stay in Your System?

What Is Ozempic Personality? Mood Changes and Semaglutide

What Does Trulicity Do to Your Body? Effects Explained

Saxenda & Blood Donation: UK Eligibility Guide

Men’s Health

Testosterone

Erectile dysfunction

Trans Women & Erectile Function: UK Guide

How Often Should Testosterone Be Checked When Using Testogel?

Where to Put Testogel for Women: Safe Application Sites

Can Testosterone Cause Gynaecomastia? Symptoms, Risks & NHS Treatment

Browse all

What to Avoid on Wegovy: UK Medical Guidance

Does Coke Zero Cause Fatty Liver? Evidence and Guidance

Does Ozempic Cause Dark Stools? UK Medical Guidance

Does Salt Help with Erectile Dysfunction? Evidence and Facts

Does PBM Red Light Therapy Help Improve Testosterone in Men?

Retatrutide Heart Rate Increase: Mechanism, Evidence, and Clinical Guidance

Can I Take Collagen with Fatty Liver? Safety and Guidance

Does Sugar Slow Metabolism? What the Evidence Shows

Spinach Vitamin K: Effects on Warfarin and Safe Consumption

How Much Fish Oil Per Day: UK Dosage Guidelines

Cod Fish Health Benefits: Nutrition and Evidence-Based Advantages

Can You Take Magnesium Every Day? UK Safety Guidance

Does Pepcid Cause Erectile Dysfunction? Evidence and Guidance

Is Cabbage Good for Fatty Liver? Evidence and Dietary Guidance

Loose Skin After Sleeve Gastrectomy: Causes, Management & NHS Surgery

Personalized weight management for women