Suddenly lower Vitamin D question

Hirri

Member
Joined
Oct 14, 2020
Messages
80
I have been doing some regular blood tests every spring and sometimes fall for a while now (thanks to health package given by the company I work for :D) and I was surprised to see that my vitamin D suddenly is lower.
In 2018 fall it was 94 nmol/l
In 2019 spring it was 133 nmol/l
in 2020 spring 58 nmol/l
in 2020 fall 59 nmol/l
in 2021 spring - will do next week

I never took any supplements of vitamin D in my life so those normal and even high levels were not caused by that. I live in Eastern Europe with long dark winters so I don't think that getting it from sun is possible (although I do spend lots of time outside in summer and that did not change). My diet did not change too except that I eat way more. A few things that come to mind though are:
-in 2018-2019 I still was underweight with low body fat % (12-16%) due to lots of running and undereating
-in 2020 I reduced my running by 60% for the whole year and almost all running sessions because of a low intensity, just for fun, thus I gained weight and now my BMI and body fat % is normal for a woman my age.
-My ferritin levels became a bit lower (dropped from 35 to 27).

I just dont understand why vitamin D levels would fall because of those reasons. Maybe it's something that I don't think of. I am 37 year old female btw.
 

youngsinatra

Member
Joined
Feb 3, 2020
Messages
222
Age
22
Location
Frankfurt, Germany
DId you get less sunlight that year? Did you wear more clothes when you were in the sun? Did you use any sun protection (it blocks vitamin D synthesis almost completely.)
From my understanding it could be possible that 25(OH)D could convert into active 1,25(OH)2D, if you are calcium deficient. It would be nice to see PTH and 1,25(OH)2D as additional blood work.

Maybe supplementation with a few thousands IU could help if it stays low. I like to get mine to 100-150 nmol/l and I need supplementation because I don't get that much sun in germany.
 

Hirri

Member
Thread starter
Joined
Oct 14, 2020
Messages
80
Yes, in fact I did start using sunscreen in 2020 but only on my face. Will not do it again, not sure why I even started (peer preasure about wrinkles I guess). But could it be the reason alone? I mean other body parts were never covered,
 

Perry Staltic

Member
Joined
Dec 14, 2020
Messages
1,456
I know it's unlikely, but is it possible that they changed nmol/L to ng/ml in 2020. 58 ng/ml is the nearly the same as 133 nmol/L (53 ng/ml). 58 nmol/L is almost deficient status.
 

Hirri

Member
Thread starter
Joined
Oct 14, 2020
Messages
80
I know it's unlikely, but is it possible that they changed nmol/L to ng/ml in 2020. 58 ng/ml is the nearly the same as 133 nmol/L (53 ng/ml)
well they give the same next to each but I dont know, maybe they mixed up :/
 

lampofred

Member
Joined
Feb 13, 2016
Messages
3,019
RP mentioned vitamin D is absorbed by and stored in fat tissue, so a fatter person will have lower blood levels than a leaner person even with the same absolute amount of vitamin D in the body.
 

Hirri

Member
Thread starter
Joined
Oct 14, 2020
Messages
80
RP mentioned vitamin D is absorbed by and stored in fat tissue, so a fatter person will have lower blood levels than a leaner person even with the same absolute amount of vitamin D in the body.
That's interesting. Logically thinking then it should not mean that I have less of it just because I have more fat, because it's stored in fat and not floating in the blood, right?
 

Hirri

Member
Thread starter
Joined
Oct 14, 2020
Messages
80
DId you get less sunlight that year? Did you wear more clothes when you were in the sun? Did you use any sun protection (it blocks vitamin D synthesis almost completely.)
From my understanding it could be possible that 25(OH)D could convert into active 1,25(OH)2D, if you are calcium deficient. It would be nice to see PTH and 1,25(OH)2D as additional blood work.

Maybe supplementation with a few thousands IU could help if it stays low. I like to get mine to 100-150 nmol/l and I need supplementation because I don't get that much sun in germany.
I would like to have 1,25(OH)2D done but it's 3 times more expensive. Although would be interesting to see. Maybe I will.
 

Quelsatron

Member
Joined
Jan 1, 2020
Messages
235
Like said it gets stored in fat, according to many studies obese people need way more. Its also possible, but I can't find any proof or even discussion, that weight gain will rapidly decrease your vitamin D levels as the new fat tissue will be completely lacking vitamin D and thus absorb whatever it can like a sponge. I'm not sure how the mechanism or kinetics of vitamin d release from fat works, but imagine if it just passively diffuses into the bloodstream. Doubling your fat reserves should halve the concentration of D in that fat so the concentration gradient and diffusion would decrease by more than half.

I happen to have gained weight during 2020 and now my blood levels are at 40 nmol/L despite attempting to get sunshine and supplementing on average 1600 IU every day for the last 1½ years
 

Hirri

Member
Thread starter
Joined
Oct 14, 2020
Messages
80
Like said it gets stored in fat, according to many studies obese people need way more. Its also possible, but I can't find any proof or even discussion, that weight gain will rapidly decrease your vitamin D levels as the new fat tissue will be completely lacking vitamin D and thus absorb whatever it can like a sponge. I'm not sure how the mechanism or kinetics of vitamin d release from fat works, but imagine if it just passively diffuses into the bloodstream. Doubling your fat reserves should halve the concentration of D in that fat so the concentration gradient and diffusion would decrease by more than half.

I happen to have gained weight during 2020 and now my blood levels are at 40 nmol/L despite attempting to get sunshine and supplementing on average 1600 IU every day for the last 1½ years
That's very interesting. Thanks!
 
Similar threads
Thread starter Title Forum Replies Date
S High Test but Suddenly Low free Test? Blood Work, Labs 7
L Suddenly unable to tolerate coffee Digestion 11
M Grandpa Suddenly Blind On One Eye Ask For Help or Advice 1
N T3 Suddenly Stopped Working Thyroid and Hormones 18
J Suddenly Breathing Through My Mouth, Especially During Sleep Insomnia, Sleep Issues 29
Mito Leading Cancer Expert Dies Suddenly Following Routine Yellow Fever Vaccination Vaccines 2
ecstatichamster Why Am I Suddenly Warmer Metabolism 8
A Started To Gain Weight Suddenly Diet 1
ecstatichamster Why Is Everyone Suddenly Bipolar? Mind, Sleep, Stress 56
C Suddenly Can't Digest Milk Anymore In The Last 7 Days? Digestion 9
M Suddenly my anemia is cured. Messtafarian 8
C Suddenly getting acne for the first time Skin 4
I How to lower bp - young man with high blood pressure Heart, Heart Rate, Blood Pressure 1
V Marine PUFAs linked to lower mortality (Study) Polyunsaturated Fats, Seed Oils 4
E Lower prolactin withour raising hemoglobine Ask For Help or Advice 0
youngsinatra Can High Vitamin D Compensate Lower Dietary Calcium? Ask For Help or Advice 4
Mauritio Sterile gut leads to lower anxiety, serotonin , and TPH-levels + some bacteria don't increase serotonin Articles & Scientific Studies 4
N How can I lower ACTH production due to pituitary gland tumor? Cortisol, Serotonin, Histamine 6
L Lower Belly Fat, Oily Skin & Hair Loss... Female Issues 4
Hans 8 uncommon herbs that lower prolactin and restore dopaminergic neurotransmission Articles & Scientific Studies 48
B Lower FFA/FAO Metabolism 17
U How to lower testosterone in women? Female Issues 17
Hans How to lower intracellular cortisol Articles & Scientific Studies 11
Lokzo COVID‐19 pneumonia causes lower testosterone levels - PUBMED 2020 Scientific Studies 4
U How To Lower Stress Impact From Surgery? Cortisol, Serotonin, Histamine 0
D Lower And Upper Body Weakness Symptoms, Causes 0
H How To Lower High Prolactin? Blood Work, Labs 13
haidut Aspirin Has Dramatically Lower Bleeding Risk Than Pharma Anticoagulants Scientific Studies 10
lvysaur Why Does Aspirin Lower My Bilirubin? Blood Work, Labs 2
E How Can I Lower My Fever Issues? Tylenol Seems To Be The Only Option Ask For Help or Advice 45
M How To Lower Allopregnanolone Levels Male Issues 5
Hgreen56 Pasta Scores Lower Insulin Index Than Fruit Diet 13
GelatinGoblin Does Sunlight Lower Thyroid And Steroids? Ask For Help or Advice 1
rzero Breast Cancer Survivors Who Use Estrogenic Botanical Supplements Have Lower Serum Estrogen Levels Scientific Studies 20
P Lower Abdominal Bloating From The Pill - Looking For Advice Female Issues 9
S How To Lower CAMP? Metabolism 3
F Can Thyroid Supplementation Lower Already Low Cortisol? Cortisol, Serotonin, Histamine 2
C Higher Carb To Protein Ratio Results In Higher Testosterone And Lower Cortisol In Men (1987) Scientific Studies 5
snacks Magnesium, Iodine, Butekyo All Lower Temperature Metabolism 20
Opioidus A List Of Things That Lower Or Antagonize Progesterone Selectively? Male Issues 1
N Lower Levels Of Endotoxins And Better Gut Permeability In Centenarians VS Young People Articles & Scientific Studies 0
haidut The "safe" Levels Of Thyroid Inhibitor In Tap Water Much Lower Than Previously Thought Scientific Studies 0
Elize What Can Be Used To Lower Histamine But Not Cortisol Fruit Juice 51
Vileplume More Raw Goat Milk = Lower Temps, Even Though I Feel Good? Metabolism 8
S How Do Permanently Lower Prolactin? Male Issues 51
L Dairy-rich Diet Linked To Lower Risks Of Diabetes And High Blood Pressure Dairy 3
D Possible Ways To Lower Serotonin In Young Children Autism 10
C Temps LOWER On NDT? Ask For Help or Advice 50
pauljacob Tiny Pits In My Lower Leg Skin 6
E Coffee Linked To Lower Body Fat In Women Scientific Studies 0

Similar threads

Top