I currently use the 670G with the Guardian 3 CGM. Last year my endocrinologist recommended I try the 670G and I had no issues getting approval, and I started using the system in March of 2018. My A1C is worse than it has ever been. The 670G target BG is programmed to for 120mg/dL and unchangeable. My target BG has always been 90mg/dL.

But I’ve had too many issues with failed sensors over the last year. I have called into the support line over two dozen times since getting the 607G. I was losing my patience, and each call into the support center ended with a ” … we will send you a replacement sensor”. The support reps responses made it seem that the problem was me, not the product.

No matter how carefully I insert and tape down a sensor, The sensor reading becomes unstable when I exercise. Medtronic reps told me directly, “The sensor can become unstable during vigorous exercise.” It was recommended that when this happens, I should replace the sensor. I exercise every day. What am I supposed to do?

Eventually, after numerous calls over two months last fall, I was given a link to request a new transmitter with updated firmware. That was several weeks ago, and I have not heard anything from Medtronic.

I don’t care anymore. The system is unusable to me. If I can’t exercise safely or go hiking with a CGMS, then it serves no purpose.

This week I had a long chat with my endocrinologist. She stated her other patients were doing well on the 67G and G3. They had improved outcomes, but these are patients who were never as tightly controlled as I was. She called Medtronic on my behalf. A Medtronic diabetes educator called me, and we spoke. She admitted that my A1C would be higher with the 670G system in auto-mode and recommended disabling auto-mode. So that is what I will do.

I may talk to my endo about going back to Dexcom. The G6 seems like a fantastic bit of kit.

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I went into my appointment with my endocrinologist with a defeated look. I had downloaded and charted the data from my Accu-Check Aviva and I didn’t like what I saw. I gained another pound and my BG readings are all over the map.

The diabetes monster is beating me. He has escaped his cage, has clawed and chewed his way into my life in a way that makes me feel like the battle is lost. The monster’s fangs are huge and his attacks brutal.

How do I defend myself? What do I do to push the push the monster back into the cage? Where do I start?

I know I must do these things:

  • Exercise
  • Eat lower carb


I get up at 6 6AM so that I can get ready, eat breakfast, and be out the door to work by 7:30AM. I’m not willing to sacrifice sleep to exercise in the morning. But getting exercise is a challenge for me. I live in the North Eastern USA. Summers are hot (above 27ºC) and humid (over 80%) and winters are cold (-4ºC) and humid (snow, freezing rain). I especially hate winter. Last winter, I think it snowed everyday. I had very severe seasonal affective disorder. I found the weather depressing. I am not willing to exercise when the temperatures are in the extreme.

Exercising at lunch time is doable, if I drive (about 10 minutes) away and find somewhere safer than the area where I work. I stopped walking around outside last year after a gang shooting occurred a few blocks from where I was walking. Bullets are not conducive to health. But driving to somewhere safer means sacrificing lunch time. I hate gobbling my food. If I am only allowed a limited number of meals in limited amounts I want to savour the experience.

I could exercise after work. In the summer I have daylight after I get home (around 5:30PM). In the winter, I am lucky if I see sunlight when leaving the office. On winter mornings, I don’t see sunlight until after I get to the office.

Low Carb Diet

I am not sure what a low-carb diet means in an absolute sense but I know what it means for me. It means eating less than 120 grams of carbohydrates per day. But how much less? 100 grams per day? 90 grams per day? Even less?

I am considering going on a diet of Soylent. I have a package of Soylent in the basement1 and I think I could cut my caloric and carb intake by eating half the recommended daily serving. That’s about 1000 calories per day and 114g of carbohydrate per day. Hmm … that doesnt’ seem low-carb.

Perhaps I could ingest 1/4 of the Soylent serving per day. Can I be healthy on 500 calories per day?

The monsters roar is deafening and I can barely hear myself think. How do I avoid being eaten alive?

  1. I had pre-ordered and then cancelled for a full refund, but the vendor still delivered the product. It was too much hassle for them to have me return the package so I got to keep it.