![Mayo Clinic Q and A: Caffeine's effects on blood sugar and blood pressure - Mayo Clinic News Network Mayo Clinic Q and A: Caffeine's effects on blood sugar and blood pressure - Mayo Clinic News Network](https://newsnetwork.mayoclinic.org/n7-mcnn/7bcc9724adf7b803/uploads/2017/03/shutterstock_71693821.jpg)
Mayo Clinic Q and A: Caffeine's effects on blood sugar and blood pressure - Mayo Clinic News Network
![Coffee warning: Caffeine on an empty stomach may cause insulin resistance and weight gain | Express.co.uk Coffee warning: Caffeine on an empty stomach may cause insulin resistance and weight gain | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/11/750x445/1570668.jpg)
Coffee warning: Caffeine on an empty stomach may cause insulin resistance and weight gain | Express.co.uk
![Will Coffee Break My Fast? A Complete Guide on Coffee and How It Affects You. | Optimising Nutrition Will Coffee Break My Fast? A Complete Guide on Coffee and How It Affects You. | Optimising Nutrition](https://optimisingnutrition.com/wp-content/uploads/2022/07/Copy-of-Blog-Headers-Facebook-Size-38.png)
Will Coffee Break My Fast? A Complete Guide on Coffee and How It Affects You. | Optimising Nutrition
![Nutrients | Free Full-Text | Caffeine as a Factor Influencing the Functioning of the Human Body—Friend or Foe? Nutrients | Free Full-Text | Caffeine as a Factor Influencing the Functioning of the Human Body—Friend or Foe?](https://pub.mdpi-res.com/nutrients/nutrients-13-03088/article_deploy/html/images/nutrients-13-03088-g001.png?1630577567)