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.

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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

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.

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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

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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.

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Erectile dysfunction

Answer all your questions about erectile dysfunction.

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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.

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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.

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

Weight Loss

min read

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

Gastric sleeve surgery explained: how sleeve gastrectomy works, NHS eligibility criteria, what to expect before and after surgery, risks, and long-term outcomes. Evidence-based UK guidance.

5 Day Pouch Test for Gastric Sleeve: Evidence, Safety & NHS Guidance

Weight Loss

min read

5 Day Pouch Test for Gastric Sleeve: Evidence, Safety & NHS Guidance

5 day pouch test for gastric sleeve: find out what it involves, whether it works, who should avoid it, and why NHS bariatric team guidance is essential before you start.

How to Prevent Hair Thinning and Loss: UK Evidence-Based Guide

Hair Loss

min read

How to Prevent Hair Thinning and Loss: UK Evidence-Based Guide

How to prevent hair thinning and loss: discover evidence-based strategies, NHS and private treatments, nutritional advice, and when to see a GP or dermatologist in the UK.

Does Kombucha Help with Fatty Liver? Evidence and Risks

Weight Loss

min read

Does Kombucha Help with Fatty Liver? Evidence and Risks

Does kombucha help with fatty liver disease? Discover what the evidence says about kombucha for liver health, potential risks for people with liver conditions, and NICE-recommended treatments that actually work for fatty liver in the UK.

Gynaecomastia vs Man Boobs: Key Differences, Causes, and Treatments

Weight Loss

min read

Gynaecomastia vs Man Boobs: Key Differences, Causes, and Treatments

The difference between gynaecomastia and man boobs explained — learn how to tell glandular breast tissue from chest fat, what causes each condition, and when to see a GP.

How Does Trulicity Make You Feel? Side Effects and What to Expect

GLP-1 Brands

min read

How Does Trulicity Make You Feel? Side Effects and What to Expect

How does Trulicity make you feel? Discover the common physical effects, digestive symptoms, and what to expect in your first weeks on this type 2 diabetes medication. Learn when to contact your GP and how to manage side effects effectively.

Is It Harmful to Stop Testogel? Safety and Risks Explained

Testosterone

min read

Is It Harmful to Stop Testogel? Safety and Risks Explained

Is it harmful to stop Testogel? Discover what happens when you discontinue testosterone gel, the potential health risks, and how to safely stop treatment under medical supervision with expert UK guidance.

Vitamin D Obesity Treatment: Evidence, Doses and UK Guidance

Weight Loss

min read

Vitamin D Obesity Treatment: Evidence, Doses and UK Guidance

Discover the evidence behind vitamin D obesity treatment: how deficiency relates to weight, recommended supplementation doses, and why vitamin D supports—but doesn't replace—proven weight management strategies in the UK.

Vitamin D from Fruits: Why Plants Aren't a Source

Supplements

min read

Vitamin D from Fruits: Why Plants Aren't a Source

Can you get vitamin D from fruits? Discover why fruits contain virtually no vitamin D, learn about the best UK dietary sources including oily fish and fortified foods, and find evidence-based guidance on maintaining healthy vitamin D levels through diet and supplementation.

Mounjaro

min read

Loopy Off the Mounjaro: Causes, Safety, and Management

Feeling loopy on Mounjaro? Discover why tirzepatide causes dizziness, light-headedness, and mental fog, when to seek medical advice, and practical strategies to manage these common side effects safely during diabetes treatment.

Can You Put Testogel On Twice a Day? UK Dosing Guidance

Testosterone

min read

Can You Put Testogel On Twice a Day? UK Dosing Guidance

Can you apply Testogel twice daily? Discover why this testosterone gel is licensed for once-daily use in the UK, the risks of increasing application frequency without medical advice, and how to optimise your treatment safely under proper supervision.

Anastrozole for Male Gynaecomastia: Evidence, Dosage, and UK Guidance

Weight Loss

min read

Anastrozole for Male Gynaecomastia: Evidence, Dosage, and UK Guidance

Anastrozole for male gynaecomastia: understand how this off-label aromatase inhibitor works, what NHS and NICE guidance says, dosage, side effects, and when surgery may be a better option.

Anti-Anxiety Allergy Medication: UK Guide to Hydroxyzine and Antihistamines

Supplements

min read

Anti-Anxiety Allergy Medication: UK Guide to Hydroxyzine and Antihistamines

Anti-anxiety allergy medication explained: discover how hydroxyzine and antihistamines are used for both anxiety and allergies in the UK, including MHRA safety guidance, side effects, and NHS treatment options.

Best Allergy Medication for Cottonwood Allergy: UK Guide

Supplements

min read

Best Allergy Medication for Cottonwood Allergy: UK Guide

Discover the best allergy medication for cottonwood allergy, including antihistamines, nasal corticosteroid sprays, and combination treatments. Learn which options suit your symptoms, how to use them effectively, and when to see your GP for persistent allergic rhinitis.

Tadalafil & Brain Blood Flow: What the Evidence Shows

Erectile Dysfunction

min read

Tadalafil & Brain Blood Flow: What the Evidence Shows

Can tadalafil support brain health? Explore clinical evidence on cerebral blood flow, cognitive effects, and UK safety guidance for daily low-dose use.

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

Gastric Sleeve Surgery: How It Works, Eligibility and Long-Term Outcomes

5 Day Pouch Test for Gastric Sleeve: Evidence, Safety & NHS Guidance

How to Prevent Hair Thinning and Loss: UK Evidence-Based Guide

Does Kombucha Help with Fatty Liver? Evidence and Risks

Gynaecomastia vs Man Boobs: Key Differences, Causes, and Treatments

How Does Trulicity Make You Feel? Side Effects and What to Expect

Is It Harmful to Stop Testogel? Safety and Risks Explained

Vitamin D Obesity Treatment: Evidence, Doses and UK Guidance

Vitamin D from Fruits: Why Plants Aren't a Source

Loopy Off the Mounjaro: Causes, Safety, and Management

Can You Put Testogel On Twice a Day? UK Dosing Guidance

Anastrozole for Male Gynaecomastia: Evidence, Dosage, and UK Guidance

Anti-Anxiety Allergy Medication: UK Guide to Hydroxyzine and Antihistamines

Best Allergy Medication for Cottonwood Allergy: UK Guide

Tadalafil & Brain Blood Flow: What the Evidence Shows

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