Quick Answer
Vitamin A Skin Health Randomized Trial has evidence relevant to strength of evidence and what the studies can or cannot prove, but conclusions should stay close to the cited sources. One representative finding is: It contributes to millions of deaths each year and is strongly associated with comorbidities such as hypertension, type 2 diabetes, and cardiovascular disease.In Brazil, the burden is similarly substantial, with 39.6% of the population classified as overweight and 23.8% as obese.The rising prevalence of obesity highlights the need to identify modifiable risk factors and develop effective interventions.
Key Takeaways
- 01It contributes to millions of deaths each year and is strongly associated with comorbidities such as hypertension, type 2 diabetes, and cardiovascular disease.In Brazil, the burden is similarly substantial, with 39.6% of the population classified as overweight and 23.8% as obese.The rising prevalence of obesity highlights the need to identify modifiable risk factors and develop effective interventions. [Menezes-Júnior Luiz (2026)]
- 028 9 Shift workers are particularly vulnerable because reduced sunlight exposure limits endogenous vitamin D synthesis. [Menezes-Júnior Luiz (2026)]
- 03Studies have shown that shift workers have an 80% higher risk of hypovitaminosis D than individuals in other occupational groups.In this population, Batista et al.reported a high prevalence of hypovitaminosis D (73%) and a significant association with increased visceral fat area (odds ratio [OR]: 2.4; 95% confidence interval [CI]: 1.1–5.2). [Menezes-Júnior Luiz (2026)]
- 041 2 Obesity is a chronic, multifactorial disease characterized by excessive adipose tissue accumulation and is among the most significant global public health challenges. [Menezes-Júnior Luiz (2026)]
The current Migaku evidence database contains 2 reusable source documents for Vitamin A Skin Health Randomized Trial. This answer focuses on strength of evidence and what the studies can or cannot prove.
- It contributes to millions of deaths each year and is strongly associated with comorbidities such as hypertension, type 2 diabetes, and cardiovascular disease.In Brazil, the burden is similarly substantial, with 39.6% of the population classified as overweight and 23.8% as obese.The rising prevalence of obesity highlights the need to identify modifiable risk factors and develop effective interventions. [Menezes-Júnior Luiz (2026); evidence level 2]
- 8 9 Shift workers are particularly vulnerable because reduced sunlight exposure limits endogenous vitamin D synthesis. [Menezes-Júnior Luiz (2026); evidence level 2]
- Studies have shown that shift workers have an 80% higher risk of hypovitaminosis D than individuals in other occupational groups.In this population, Batista et al.reported a high prevalence of hypovitaminosis D (73%) and a significant association with increased visceral fat area (odds ratio [OR]: 2.4; 95% confidence interval [CI]: 1.1–5.2). [Menezes-Júnior Luiz (2026); evidence level 2]
- 1 2 Obesity is a chronic, multifactorial disease characterized by excessive adipose tissue accumulation and is among the most significant global public health challenges. [Menezes-Júnior Luiz (2026); evidence level 2]
- AD is now recognized as one of the most common dermatologic conditions worldwide, which is frequently associated with food and environmental allergies []. [Cardenas Caitlyn (2026); evidence level 3]
Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording.
This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.
Sources