Does coffee raise blood sugar? Preliminary findings

July 26 2017 by , medical review by in Blood sugar, Coffee, Experiment

A few weeks ago, I started an experiment to better understand how different foods and lifestyle decisions impact blood sugar, using a constant-glucose-monitoring device.

Right now, I’m testing what effect drinking coffee has on blood-sugar levels.

Here’s the preliminary data:

The blue line is the blood glucose on a day I drank coffee. The red line is on a day without coffee. As you can see, the blood-sugar levels are on average higher when drinking coffee than when not (I added nothing to the coffee).

To reduce the probability that this difference is random, I’ll repeat the experiment this week.

What do you think will happen? On days when drinking coffee will the blood sugar be (on average) higher, lower or the same? Leave your guess in the comments below.

We’ll share our findings in a few days.

Earlier experiments

Are you interested in our earlier tests? Check out the series:

Advanced low-carb topics

MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
Common mistakes on low carb
15:47
Do you have a hard time losing weight on low carb or keto? Then perhaps you're making one of the common mistakes.
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
Weight control – calories or insulin
36:26
Is weight loss controlled by calories in and calories out? Or is our body weight carefully regulated by hormones?
MEMBERS ONLY
MEMBERS ONLY
45:29
Although it is new in popularity, people have been practicing a carnivore diet for decades, and possibly centuries. Does that mean it is safe and without concern?
A low-carb diet for T2D reversal – Dr. Sarah Hallberg
34:15
What is the best approach to type 2 diabetes reversal? In this presentation, Sarah takes us on a deep-dive into the matter and she puts studies and evidence under the microscope.
Diet Doctor Podcast #7 – Megan Ramos
54:01
In the seventh episode of Diet Doctor Podcast, Megan Ramos, co-director at IDM program, talks about intermittent fasting, diabetes and her work together with Dr. Jason Fung at the IDM clinic.
Do you need to check your ketones?
22:19
Should you measure ketones on a keto diet? Dr. Westman guides you through situations when measuring is beneficial – and when it's not.
MEMBERS ONLY
The cause of obesity and diabetes
45:52
Why do we get fat – and what can we do about it? Iconic science-writer Gary Taubes answers these questions.
MEMBERS ONLY

Popular now

The keto bread
01:27
Do you miss bread on a keto low-carb diet? Then you’ll love this!
Diet Doctor Podcast #46 with Dom D'Agustino, PhD
25:00
You can't look at the world of ketone research without seeing the impact of Dr. D'Agostino. Dom is the leading authority of how ketogenic diets and exogenous ketones impact brain health and function.
Diet Doctor Podcast #25 – Alison Gannett
1:06:21
Alison went from winning championships as an extreme skier to facing her own mortality with brain cancer. Fortunately, 6 years later, she is thriving and now is an oncology diet coach to help people use a ketogenic diet as well as comprehensive lifestyle changes to augment other potential cancer therapies.
MEMBERS ONLY
Diet Doctor Podcast #63 with Ben Bikman, PhD
1:11:33
Insulin resistance is killing us. Professor Ben Bikman wants you to know why that is and what we can do about it.
Diet Doctor Podcast - The importance of protein
1:23:41
Protein may be the most important nutrient for health and weight loss. In this episode, we discuss the importance and practical aspects of eating enough protein with three of our experts at DietDoctor.com.
Diet Doctor Podcast #75 - Stuart Phillips
1:01:48
Muscle tissue may be one of the most important and under-appreciated elements contributing to our long-term health. Stuart Phillips has dedicated his career to the science of building muscle.
My low-carb story with Marc Gossange
03:01
After living somewhat of a high-carb life and then living in France for a few years enjoying croissants and freshly baked baguettes, Marc was diagnosed with type 2 diabetes.
58:42
MEMBERS ONLY
Diet Doctor Podcast #78 — Vegetable oils: Are they healthy?
1:32:03
Some authorities promote vegetable oils as a health food, but others see them as a clear danger to our health. How do we make sense of the disparate views? Our panel of experts weighs in and helps us put things in perspective.
Diet Doctor Podcast #64 with Jason Fung
1:07:58
Dr. Jason Fung is well known for pioneering the use of fasting as a medical intervention to aid weight loss and treat diabetes. In his new book, The Cancer Code, Dr. Fung applies that same approach to cancer.
Diet Doctor Podcast #62 with Gary Taubes
1:09:51
Gary Taubes is back, employing his strong investigative journalism skills to help us rethink weight loss and make a case for ketogenic diets. Join me for a fascinating interview about his new book, The Case for Keto.
MEMBERS ONLY
My success story with Kenneth Russell
02:52
When Kenneth turned 50, he realized that he wouldn't make it to 60 the way he was going.
My success story with Chuck Hicks
02:39
At nearly 500 lbs (230 kg) Chuck could barely move at all anymore. It wasn’t until he found a keto diet that thing started to change.
MEMBERS ONLY
MEMBERS ONLY
Let's get moving #4: Lunges
03:20
How do you lunge? What's the best way to do supported or walking lunges? Watch this video for this great exercise for the legs, glutes, and back.
MEMBERS ONLY
A low-carb story with Dr. Sanjeev Balakrishnan
01:59
How can you as a doctor treat patients with type 2 diabetes? Dr. Sanjeev Balakrishnan learned the answer to this question seven years ago. Check out this video for all the details!
Did the introduction of the dietary guidelines start the obesity epidemic?
35:12
Did the introduction of the dietary guidelines start the obesity epidemic?
MEMBERS ONLY
MEMBERS ONLY

Low-carb basics

MEMBERS ONLY
MEMBERS ONLY
Low-carb tips with team Diet Doctor – Traveling
08:05
How do you stay low carb when traveling? Watch this episode to find out!
MEMBERS ONLY
MEMBERS ONLY
A global food revolution
34:30
The mistakes behind the obesity epidemic and how we can fix them together, empowering people everywhere to revolutionize their health.
MEMBERS ONLY
7 tips to make low carb simple
09:41
The star of the BBC series Doctor in the House, Dr. Rangan Chatterjee, gives you seven tips that will make low carb easy.
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
Women's questions introduction
01:36
In this video series, you can find expert views on some of your top questions about low-carb and women's health.
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY

Q&A videos

MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
Women's questions introduction
01:36
In this video series, you can find expert views on some of your top questions about low-carb and women's health.
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
Is low carb bad for gut bacteria?
02:14
Can a low-carb diet be potentially harmful to your gut microbiome?
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY
Is saturated fat bad?
07:29
Low carb is great. But could the saturated fat clog your arteries and kill you? Top low-carb doctors answer this question.
MEMBERS ONLY
MEMBERS ONLY
MEMBERS ONLY