Hi I've been playing with the paleo diet for a year now and it resonates with my beliefs on the healthy diet principles etc. having said that I went low carb (around 50gm/day)a few months ago in an attempt to lose around 3-5kgs of unwanted fat. I started sprint training 2x week lift heavy 3x and did some walking. My basal body temp dropped to 35.5 degrees most mornings got sluggish and put ON weight. Urine tests revealed ketones, protein urobilonogen? In my urine. Does that mean I'm in a catabolic state. I had a few days of carbing up (with fruit sweet potato and quinoa) and woke today to basal temp 36.3 degrees and lost 1.2kgs. Thoughts suggestions etc. I'm concerned I'm breaking down! Other symptoms anxiety, afternoon tiredness headaches chronic sinusitis asthma. I want to stay paleo but am confused. I am a 41 year old woman nothing exceptional other than love exercising in moderation at 23% body fat 5ft 3" at 56kgs,(126lbs)?
asked byLisa_44 (5)
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on November 03, 2012
at 10:56 PM
First off I want to start by saying, Excellent Question! I am about to quote the abstract of a published article I will then cite.
An increased iodine requirement as a result of significant changes in human nutrition rather than a decreased environmental iodine supply is suggested to represent the main cause of the iodine deficiency disorders (IDD). The pathomechanism proposed is based on the fact that serum concentrations of thyroid hormones, especially of trijodothyronine (T3), are dependent on the amount of dietary carbohydrate. High-carbohydrate diets are associated with significantly higher serum T3 concentrations, compared with very low-carbohydrate diets. While our Paleolithic ancestors subsisted on a very low carbohydrate/high protein diet, the agricultural revolution about 10,000 years ago brought about a significant increase in dietary carbohydrate. These nutritional changes have increased T3 levels significantly. Higher T3 levels are associated with an enhanced T3 production and an increased iodine requirement. The higher iodine requirement exceeds the availability of iodine from environmental sources in many regions of the world, resulting in the development of IDD.
Basically t3 will either be produced with adequate carb intake or adequate dietary iodine. So if you want to follow a ketogenic(sp?) diet, consider taking either an iodine/potassium iodide/iodoral supplement OR consider eating more seafood (which is naturally very rich in iodine).
PS If you supplement instead of just eating more seafood (oysters especially), then make sure and supplement with selenium also (According to most doctors, notably Dr. Brownstein).
Hope I helped, -Stephen!
on November 08, 2012
at 12:28 AM
You're overtraining, Lisa. Classic symptoms. Just walk for a few weeks or however long it takes for you to regain your health.
Also, there isn't a shred of evidence that lower T3 levels associated with low-carb diets has any adverse effect. It's not something you need to worry about.
on November 04, 2012
at 07:28 AM
thank you for your thoughts. I can't get my head around the conflicting info re PUFA info and low carb as well as the higher carb link with higher T3 levels. I guess I am just going from personal experience. I was certain that after reading Nora gedgaudas that carbs were not necessary for human nutrition but it appears I need them In response to how much i was eating here is an example eating day
AM 2 eggs cooked in coconut oil 50 gm smoked salmon handful of baby spinach
100gm turkey bake including green veggies such as celery, zucchini green beans
Lunch 120gm chicken salad with heaps lettuce, tomato, capsicum splosh of olive oil dressing
Pm tea 1/2 - 1 cup blueberries with coconut yoghurt and handful of nuts
Dinner 100-150gm lean protein with stirfry green leafy veggies 100gm sweet potato as a post workout meal
I have been supplementing with iodine (did the patch test and my body SUCKED it up in 2 hours) so Lugols iodine 3 drops daily. about to supplement with sublingual selenium as well. Am taking adrenal/thyroid support herbs Interestingly I was doing all this but it wasn't until I had a big carb up few days that my basal temp started to rise..
on November 03, 2012
at 11:05 PM
I've noticed the same thing going low carb, so I will be watching this. Sorry for not making a new thread, but does anyone know if low thyroid can lead to being underweight and having difficulty gaining weight?