Fasting Blood Sugar & Tooth Enamel, Lp(a) and CVD Risk, Cold Plunge, Carnivore Muscle Soreness, Link Between Sodium Intake and Calcium Excretion Make your health an act of rebellion. Join The Healthy Rebellion Please Subscribe and Review: Apple Podcasts | RSS   Submit your questions for the podcast here   Show Notes: News topic du jour: We Broke Phosphorous "Throughout most of human history, farmers raised crops and animals side by side, which allowed them to easily recycle manure as fertilizer. During the 20th century, however, agricultural specialization separated livestock operations and grain growers, often by distances too large to transport manure. This geographic rift effectively severed the last remaining strand of the human phosphorus cycle. And it led to a surplus of phosphorus in areas of intense animal agriculture, exacerbating pollution problems in places like the Chesapeake Bay, the waterways of Wisconsin’s dairy country, and Lake Erie. According to a recent study by Metson and others, 55 pounds of phosphorus are released into the environment for every pound of phosphorus consumed in U.S.-raised beef, more than half of which comes from manure. (For wheat, the ratio is roughly 2 to 1.)" 1. Fasting Blood Sugar & Tooth Enamel  [17:35] Kara says: Hi Robb and Nicki, I have been enjoying the Q&A podcasts and you answered a question recently that is similar to mine.  I am writing because I am still struggling.  While all of my other readings are in a healthy range, my fasting reading is always in the low 100s.  I have tried eating carbs at dinner, taking carbs out of dinner, and more recently extending my fasting window.  But I can't get it to go down.  My a1c has been creeping up in the past couple years as well.  In the summer months, I train in the mornings and eat most of my carbs then.  But when I am working (I work a school schedule), I train around 4 in the afternoon and have my carbs at dinner.  I sometimes struggle with sleep and I was having a snack before bed.  I stopped the snack due to this issue and I often wake hungry, but I don't eat to ensure I have a 12 hour fasting window.  I am naturally up between 5/5:30 and I eat breakfast upon waking. When I am working, I have to eat this early, as I get up and leave for work.  I have contemplated fasting in the mornings to extend the window longer, but I am truly very hungry when I wake. Some details about me: I am a 40 year old mother of two boys ages 11 and 9.  I had gestational diabetes with both pregnancies.  When your book Wired To Eat came out, I read it and immediately got a glucometer.  I have been struggling with this fasting number for years.  I am 5'6"  and 130 pounds.  While my job is pretty sedentary, I walk 12-18k steps per day and strength train 3-4 days per week.  In my 20's, I had hypothalamic amenhorrhea due to under eating/ over exercising.  My body has been very sensitive to stress ever since and I will lose my menstrual cycle very easily if I under eat or over exercise.  (I tried to diet recently out of vanity and all it got me was acne and a messed up cycle.). All of the female hormone experts suggest a good serving of carbs at dinner for sleep and hormones.   But I have been trying to figure out what is right for me.  I eat 75-100 grams of carbs per day.  Those 100 gram days are very active days.  I have not gone fully Keto because I started having a lengthening of my cycle when I was dropping carbs lower than that.  My next physical is in August and I will have more blood work done.  But at this point, my doctor thinks I am a hypochondriac because I worry about this, yet I don't look the part. It is frustrating.  If you have any other suggestions for lowering the fasting number, I would be so grateful. As a side, I heard you mention you had enamel loss from apple cider vinegar.  Do you have any tips for preventing further loss or rebuilding enamel? I have experienced the same. Thank you for all you do.  Your work has been so helpful