What ethnicity has the lowest vitamin D?

African Americans consistently show the lowest vitamin D levels among major ethnic groups, primarily due to higher skin pigmentation (melanin) blocking UV rays needed for production, though South Asians in Western countries also face significant deficiency risks, with Hispanics generally falling between African Americans and Caucasians. This lower baseline in darker-skinned individuals often requires them to get more sun or supplements to reach sufficient levels compared to lighter-skinned people.

What race has the lowest vitamin D?

Serum 25(OH)D levels are much lower among people with dark skin than among those with light skin living at similar latitudes. The prevalence of a serious deficiency value of 10 ng/mL (or less) is particularly high among African Americans.

Why is vitamin D less in Indians?

Indian socioreligious and cultural practices do not facilitate adequate sun exposure, thereby negating potential benefits of plentiful sunshine. Consequently, subclinical vitamin D deficiency is highly prevalent in both urban and rural settings, and across all socioeconomic and geographic strata.

Which country has the lowest vitamin D levels?

The countries with the lowest average vitamin D levels are Mexico (21 ng/ml; 53 nmol/L), Japan (23 ng/ml; 58 nmol/L), and Singapore (24 ng/ml; 60 nmol/L).

Who usually has low vitamin D?

The darker your skin, the less vitamin D you make from sunlight exposure. People who are obese, those with osteoporosis, and people with malabsorption disorders like celiac disease or inflammatory bowel disease are also at risk for vitamin D deficiency.

7 Signs of Low Vitamin D (How Many do You Have?) 2024

Why are so many Americans vitamin D deficient?

Use of sunblock, common window glass in homes or cars and clothing, all effectively block UVB radiation – even in the summer. People who work indoors, wear extensive clothing, regularly use sunblock, are dark skinned, obese, aged or consciously avoid the sun, are at risk of vitamin D deficiency.

What are 5 physical signs you're taking too much vitamin D?

Five physical signs you're taking too much vitamin D include nausea/vomiting, constipation, excessive thirst/urination, fatigue/weakness, and confusion/mental fogginess, all stemming from dangerously high blood calcium (hypercalcemia) that disrupts digestion, hydration, and brain function, potentially leading to kidney issues and bone problems over time.
 

Are Arabs vitamin D deficient?

Discussion. Our meta-analysis shows that the overall Vitamin D deficiency in the healthy Saudi Arabian population is 60% and not 100% as reported in some studies. A normal level of Vitamin D (≥30 ng/mL or 75 nmol/l) was seen in 17.83% of the population.

Do Asians have less vitamin D?

Compared with Caucasians, Asians have lower serum 25-hydroxy vitamin D [25(OH)D] (1–10), and vitamin D deficiency often leads to rickets in neonates (4, 6), infants (9), children, and adolescents (1, 7, 8–10), and to osteomalacia in adults (1, 8–10).

Do Europeans have low vitamin D?

Vitamin D deficiency [serum 25(OH)D <25 nmol/l] has been reported in 2–30% of European adults, increasing in the institutionalised elderly to 80% in some studies (Lips 2007). It should be stressed that vitamin D deficiency is easily treatable, so high prevalence of vitamin D deficiency is unacceptable in Europe.

Which vitamin is most deficient in India?

The Study

• 81.28% of all samples tested were deficient in Vitamin D.
• 21.02% of all samples tested were deficient in Vitamin B12.
• 15.06% of all samples tested were deficient in Vitamin B9.

Do Indians get vitamin D from the sun?

In a country like India, where sunlight is abundant, Vitamin D deficiency might seem unexpected—but it's a growing reality. While UVB rays from sunlight are the main source of Vitamin D, urban living, pollution, and lifestyle changes have drastically reduced our exposure.

What is the normal vitamin D level in India?

Conclusion: For a healthy Indian population, the reference range of 25 HCC is much lower, and the lower limit of normal is approximately 13.5 ng/ml. This study indicates that vitamin D insufficiency in this population starts at 25 HCC values of 13.5 ng/ml and deficiency at 7 ng/ml.

What vitamins do Americans lack?

The 2015–2020 U.S. Dietary Guidelines (DGAs) has identified underconsumed intake of vitamins A, C, D, and E across all populations, and iron for women of childbearing age [4].

Do black people absorb less vitamin D?

African-American men have lower levels of Vitamin D because the increased melanin in darker skin blocks the ultraviolet rays necessary for the body to produce the vitamin, Murphy said. Thus, African-American men require up to six times more sun exposure than Caucasian men to make adequate Vitamin D levels.

Why is vitamin D low for Indians?

Lack of Adequate Sun Exposure

This reduces the amount of sunlight that reaches the epidermis, which is critical for the synthesis of vitamin D. The production of vitamin D by the epidermis experiences a substantial decline in winter, even in regions of India that receive ample sunlight.

Do white people have less vitamin D?

Unadjusted median total 25(OH)D concentration was lower in blacks than in whites [22.0 ng/mL (IQR: 14.0–32.1 ng/mL) compared with 26.8 ng/mL (IQR: 22.0–31.0 ng/mL), respectively; P = 0.011], and a higher proportion of blacks had vitamin D insufficiency (46% compared with 19%, in whites; P < 0.001) (Table 2).

Do Japanese people have low vitamin D?

They are also prevalent in Japan: one study reported the proportion of pregnant Japanese women with low (<20 ng/mL) serum 25(OH)D was 89.8% in April (Spring) and 47.8% in October (Autumn) [6], while another group reported a similar rate of 41.6% in April and May among Japanese workers, mostly men [7].

Which country is most deficient in vitamin D?

A global study on prevalence and disease burden of vitamin D deficiency showed high percentages of severe vitamin D deficiency in infants in India (61%), Iran (86%), and Turkey (51%), whereas vitamin D deficiency was present in 90% or higher in these countries.

Do Muslims have low vitamin D?

Bone and muscle weakness due to vitamin D deficiency is common among Muslim women who reside in sunny, equatorial countries.

Do British people lack vitamin D?

The average level was 75 nmol/L. Men had higher average levels than women, at 77 nmol/L. Women's average vitamin D levels were 73 nmol/L, just below the minimum level of 75 nmol/L. "This backs up the consensus that most people in the UK are Vitamin D deficient.

Which race needs vitamin D the most?

This has led many investigators to conclude that blacks and Hispanics are at higher risk of vitamin D deficiency than whites [8–12], and as a result, may also have increased risk of developing associated chronic disease conditions such as hypertension, diabetes, and cancer [14, 15].

Do you urinate excess vitamin D?

Health effects of vitamin D toxicity

This is called hypercalcemia. Hypercalcemia can cause upset stomach and vomiting, weakness, and frequent urination.

What diseases are linked to low vitamin D?

Vitamin D deficiency causes rickets in children and will precipitate and exacerbate osteopenia, osteoporosis, and fractures in adults. Vitamin D deficiency has been associated with increased risk of common cancers, autoimmune diseases, hypertension, and infectious diseases.

How long does it take to correct vitamin D deficiency?

Recovering from vitamin D deficiency usually takes 6 to 12 weeks with consistent supplementation, though it can vary, with mild cases improving faster and severe ones taking several months. Factors like deficiency severity, age, health, and lifestyle (sun exposure, diet) influence the timeline, with doctors often prescribing high-dose vitamin D for 6-10 weeks before lowering the dose to maintenance levels.