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Vitamin D Blood Levels  (25D in ng/mL)

       10          Prevents rickets - which still affects thousands of inner city children of color in northern US cities

                                                                   every winter

     < 20           Vitamin D Deficiency  

  • Associated with high risk for dozens of diseases

  • 38% of all Americans are in this very low range

    • 72% of African-Americans

    • 44% of Hispanic-Americans 

    • 39% of obese Americans    (BMI >29.9;  BMI = pounds/inches ht/inches ht x 704)

    • 19% of European-Americans

      • Reference: Liu 2018 Br J Nutr 119:928​

  20 - 29.9          Vitamin D Insufficiency  

  • Associated with increased risk for dozens of diseases

  • 38% of all Americans are in this low range

    • 44% of European-Americans

    • 43% of Hispanic-Americans 

    • 42% of obese Americans    (BMI >29.9;  BMI = pounds/inches ht/inches ht x 7.04)

    • 23% of African-Americans

      • Reference: Liu 2018 Br J Nutr 119:928​

         24          Produced by giving healthy adults 600 units of D3 daily for 6 months

  • Reference: Shirvani​ 2019 Scientific Reports 9:17685

 30 - 100     Adequate vitamin D

  • Associated with lower risk for dozens of diseases

  • 24% of all Americans are in adequate range

    • 39% of European-Americans

    • 20% of obese Americans

    • 13% of Hispanic-Americans 

    •   5% of African-Americans

      • Reference: Liu 2018 Br J Nutr 119:928​

          41          Produced by giving healthy adults 4,000 units of D3 daily for 6 months

  • Reference: Shirvani​ 2019 Scientific Reports 9:176

       64          Achieved by summer lifeguards without sunscreens

                              spending 6 hours per day in sunlight for only 6 weeks

  • Reference: Haddad 1971 J Clin Endocrinol 33:992​

        79         Produced by giving healthy adults 10,000 units of D3 daily for 6 months

  • Reference: Shirvani​ 2019 Scientific Reports 9:17685

Be careful !

There are 2 different systems for reporting 25D levels

.

One uses nanograms per milliliter or ng/mL

.

The other uses nanomoles per liter or nmol/L

.

They are NOT the same. For example, 20 ng/mL = 50 nmol/L

.

If you read a paper using the nmol/L, their numbers will look high

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Divide the nmol/L by 2.5 to get 25D into the ng/mL system that I use exclusively in my videos.

YOUR risk for low vitamin D levels? ( below 30 ng/mL )
The percentage of low D in each sub-group of Americans:

.

                    95%  of  African-Americans

                    87%  of  Hispanic-Americans

                    80%  of  obese Americans

                    76%  of  all Americans (average for total US population)

                    63%  of  European-Americans  (also called Caucasian or "white")

  • Reference: Liu 2018 Br J Nutr 119:928​ ​

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When blood levels of vitamin D (25D) are higher, 

      dozens of diseases are less common or

         less severe. These diseases include:

     

      AIDS                                                        Metabolic syndrome                                              CANCERS

     Alzheimer’s disease.                               Mood disorders - depression                         Bladder cancer

     Asthma, childhood.                                Multiple sclerosis                                              Brain tumors

     Atherosclerosis                                       Muscle weakness                                             Breast cancer

     Atrial fibrillation                                      Osteoarthritis                                                   Cervical cancer

     Autism                                                     Osteoporosis                                                    Colon cancer

     Congestive heart failure                        Osteomalacia                                                    Endometrial cancer

     COVID19                                                 Pain disorders – chronic pain                          Esophageal cancer

     Crohn’s disease                                      Periodontal disease                                          Kidney cancer

     Dementia                                                Peripheral artery disease                                 Leukemia

     Diabetes - type 1 & type 2.]                  Polycystic ovary syndrome.                              Lung cancer

     Drug resistant infections                       Psoriasis                                                             Lymphoma

     Falls in the elderly                                 Rheumatoid arthritis                                         Melanoma

     Fractured bones                                    Rickets                                                                Ovarian cancer    

     Heart attacks                                          Seasonal Affective Disorder                            Pancreatic cancer

     High blood pressure                             Sleep problems                                                 Prostate cancer

     Inflammatory bowel disease                Stress fractures                                                  Rectal cancer

     Influenza – “The Flu”                            The common cold                                            Stomach cancer

     Insulin resistance: pre-diabetes            Tooth loss                                                         Uterine cancer

     Lupus                                                      Tuberculosis - TB

     Macular degeneration.                          Ulcerative colitis

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See these topics on my videos

.

Notice that:

Cancers make up nearly a third of these diseases

Immune system diseases make up another third of them - they include: all auto-immune diseases, all infections, allergies and asthma 

.

.

Heart disease, diabetes, and nerve/brain issues dominate the other third

.

These are all common modern-day problems that are both costly financially and with significant negative impacts on families and individuals.

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To some degree, higher 25D levels may either prevent many of these diseases or considerably lessen their severity should they develop

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