Conclusion: In this prospective cohort study and updated meta-analysis, greater dietary cholesterol and egg consumption were associated with increased risk of overall and CVD-related mortality. Our findings support restricted consumption of dietary cholesterol as a means to improve long-term health and longevity.
PubMed 35360933 ↗Beta Carotene
Based on 9 first-hand reports and 241 meta-analyses & systematic reviews in the medical literature. Ranked #1435 of 1,974 overall.
Of reports that state an outcome, 0% are positive.
What Beta Carotene does, according to users
Of the people who reported each effect, the share who said it got better.
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: Supplementation of some but not all micronutrients may benefit cardiometabolic health. This study highlights the importance of micronutrient diversity and the balance of benefits and risks to promote and maintain cardiovascular health in diverse populations. (Antioxidant Supplementation in the Prevention and Treatment of Cardiovascular Diseases; CRD42022315165).
PubMed 36480969 ↗Conclusion: Further, the evidence available was limited by a high risk of bias. This highlights the need for further research in this area to understand the long-term influence of micronutrients in breast milk, the role of other breast milk micronutrients in infant neurodevelopmental outcomes, and the impact of possible lactational interventions.
PubMed 34836103 ↗Conclusion: There was no evidence of benefit from different doses of vitamin A supplementation for postpartum women on maternal and infant mortality and morbidity, compared with other doses or placebo. Although maternal breast milk retinol concentrations improved with supplementation, this did not translate to health benefits for either women or infants. Few studies reported on maternal and infant mortality and morbidity. Future studies should include these important outcomes.
PubMed 27012320 ↗Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“betacarotene which is usually beneficial for epithelial tissue in lungs caused cancer rates to increase in smokers.”
“Beta-Carotene isn't a great source of Vitamin A. You'll likely turn orange before you hit the RDA on a consistent basis.”
“Beta carotene and Vitamin A(via supps, carrots, sweet potatoes, leafy greens, Liver)”
“natural beta carotene, magnesium and also Olive oil and other monounsaturated fats.”
“Beta carotene study, well they used artificial beta carotene...just like they used in that study”
Top discussions (5)
- Vitamin A & Vitamin D deficiencies more common in ADHD children; Co-deficiency of both vitamins associated with worse symptoms (2020) [n = 188] ↗
- "Use of vitamin B6 and B12 from individual supplement sources, but not from multivitamins, was associated with a 30% to 40% increase in lung cancer risk among men." ↗
- Supplements to make my skin look sexy as hell ↗
- ROAST MY SUPPLEMENTS ↗
- Does anyone skip the multivitamin and get all of their vitamins and minerals from individual supplements? ↗
More supplements
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate