100 Capsules - $7.40 Vitamin A is essential to a broad range of physiological processes. It is vital to eye health and is particularly important for optimal night and low-light vision.* Vitamin A also affects gene regulation, cell growth, bone metabolism, and skin health.* Supplementation with vitamin A supports immune health by maintaining the integrity of the cells that line the airways and digestive tract.* It may also play a role in triggering immune cells into action.* A-25 is formulated with a dry, water-soluble preparation of vitamin A palmitate. The palmitate form of vitamin A occurs naturally in fish, eggs, and dairy products. Essential nutrient for eye, bone, and skin health* Promotes optimal night and low-light vision* Supports a healthy immune system* Dry, water-soluble preparation of vitamin A palmitate IngredientsVitamin A (as vitamin A palmitate, 25,000 IU)Stay Connected With Dr. Weil - Get Free Newsletters Right In Your Inbox
‘Ride the Tiger’ — a Documentary About the Bipolar Brain Do Men Sweat More Than Women? Life Expectancy Projected to Soar — Except in the US How CDC Uses False Fears to Promote Vaccine Uptake Vitamin C May Be a Potent Adjunct to Cancer Treatment A landmark paper from the Vitamin D Council asserts that a form of vitamin A, retinoic acid, can block the activity of vitamin D by weakly activating the vitamin D response element on genes. Since vitamin D levels are crucial for human health, that means it is essential to have the proper ratio of vitamin D to vitamin A in your body. This means that vitamin A supplementation is potentially dangerous. Vitamin A production is tightly controlled in your body, the source (substrate) being carotenoids from vegetables in your intestine. Your body uses these carotenoid substrates to make exactly the right amount of retinol. But when you take vitamin A as retinol directly, such as in cod liver oil, you intervene in this closed system and bypass the controls.
The goal is to provide all the vitamin A and vitamin D substrate your body would have obtained in a natural state, so your body can regulate both systems naturally. This is best done by eating colorful vegetables and by exposing your skin to sun every day.What is vitamin A palmitate in milk? Vitamin A palmitate is a vitamin additive that is added to milk to help increase the amount of vitamins that are removed from milk. It is generally only added to fat free and reduced fat milk which has had vitamins removed during the fat removing process. What foods are high in vitamin D? What are some nutrition facts about whole milk? Is soy milk good for you? Vitamin A palmitate is added by food companies to make fat free and low fat milk more nutritious than they would be without the addition of vitamins that were removed. It is present in these types of milk to make them more closely resemble whole milk. It is a somewhat controversial additive of milk that has raised concerns about higher instances of cancer and cardiovascular disease.
Palmitate is made up of the same fatty acids that are present in palm oil. Palmitic acid is a 16 carbon fatty acid, and it is used as a carrier for the vitamin A that is placed into the milk to make it more nutritious. The form of vitamin A that is added to the milk is called retinol, which is also present in cosmetic applications. When the palmitic acid and the retinol are formed together and placed in milk, they are more stable than when vitamin A would simply be put into milk on its own. Learn more about Nutritional Content What information is contained on a nutrition label on milk? The nutrition label on milk contains a list of nutrients in 1 cup of milk, including calories, fat, cholesterol, sodium, potassium, carbohydrates, protein ... What vitamin helps hair and nails grow? Vitamins that stimulate hair growth include vitamin A and the B-complex vitamins. Biotin especially helps hair and nails grow faster and become stronger. What are the vitamin contents of Filipino chop suey?
Filipino chop suey is a good source of many vitamins, including calcium, iron, vitamin B6, vitamin C and folic and pantothenic acids. It has an average cal... What are some foods that contain vitamin B12? Food sources of vitamin B12 include meat, salmon, cod, milk, cheese, eggs and fortified breakfast cereals, according to the National Health Service of the ... How much milk does a Holstein cow produce? What is the percent of trimyristin in nutmeg? What is milk paint? What is a simple recipe for cheesecake using Eagle brand sweetened condensed milk? What are the health benefits of clams? Retinyl palmitate is the the ester of retinol (vitamin A) combined with palmitic acid, a saturated fatty acid and a major component of palm oil. It is not considered to be the same ingredient as retinol, although it is converted to retinol, and then to the active component of retinoic acid once it is absorbed by the skin after being topically applied. It belongs to the family of chemical compounds known as retinoids and is one of the most important vitamins for the appearance of the skin because of its small molecular structures.
These tiny molecules have the ability to penetrate the outer layers of the skin and work to repair the lower layers where collagen and elastin reside (source). * The ester of retinol (Vitamin A) * Please read Truth In Aging's post on Retinyl Palmitate, Not to be confused with Retinol Retinyl palmitate is considered a less irritating form of retinol, and a gentler ingredient on sensitive skin. However, the reason retinyl palmitate may cause less irritation is because of the lengthier process that must take place for it to be converted into retinoic acid (otherwise known as tretinoin), the active compound that creates the cell regeneration and exfoliation action within the skin. Retinyl palmitate converts into retinol (or vitamin A), which in turn is converted into retinoic acid by specialized enzymes in the skin. Retinoic acid facilitates communication between cells, encouraging aging cells to continue their renewal process, and regenerate collagen and elastin to prevent the appearance of aging skin, wrinkles, and fine lines.
It is also effective at producing new, healthy skin cells to replace skin previously damaged by acne (source). However, retinol cannot communicate with a cell until it has been broken down into retinoic acid (source). Once this breakdown has occurred, communication begins and the cells' turnover rate increases, thus speeding up the production of collagen. Retinyl palmitate is considered an exfoliator (albeit more gentle than pure retinol), and its effect of repeatedly shedding the upper dermal layer forces the skin to produce new cells. There is some concern that at the Hayflick Limit (the number of times skin can regenerate itself before reaching its limit), the aging process will actually accelerate because cells are unable to multiply indefinitely. Retinyl palmitate is a controversial ingredient because of its potentially hazardous side effects. Although it has many proven benefits, the Cosmetics Database rates it as a moderate hazard ingredient. It warns of potential side effects including cancer, developmental and reproductive toxicity, violations, restrictions and warnings, cellular level changes, and organ system toxicity.
Retinyl palmitate has been shown to produces excess reactive oxygen species that can interfere with cellular signaling, cause mutations, lead to cell death, and it may be implicated in cardiovascular disease. It has caused reproductive effects at low doses in one or more animal studies, and there is limited evidence of cancer and skin toxicity, although it has been shown to be easily absorbed into the skin. Retinyl palmitate is considered a gentle ingredient, and very few warnings of irritation exist. However, because it converts to retinol in the skin, it is important to note that retinol, (along with tretinoin) can cause severe skin reactions, including peeling, redness, scaling, itching, and burning (source). Formulas containing this ingredient, prescribed or OTC, are expected to cause some irritation upon use, although the irritation should decrease after approximately two weeks of continued application. It is also known to cause thinning of the skin, and therefore should not be used in conjunction with hair waxing.
Because retinol greatly increases the risk of extreme sunburn, care should be taken (shade, sunscreen, etc.) to protect treated skin from overexposure to ultraviolet light. Since 2009, the FDA has been reviewing data from several studies on a potential link between retinyl palmitate and cancer risks. The National Toxicology Program released a report in January 2011 based on a study with mice, concluding that retinyl palmitate and retinoic acid become carcinogenic in sunlight (source). Subsequently, the EWG issued a statement recommending that manufacturers remove Retinyl Palmitate from all products used on sun-exposed skin. According to FDA scientists, retinyl palmitate breaks down in sunlight to photomutagenic compounds, forming free radicals in the presence of UVA and UVB radiation. However, the FDA's final assessment has not yet been made public. Recommended Products with Retinyl Palmitate: Lumavera Glycolic Night Cream ($80), Eslor Brightening Activator Serum ($110), Michael Todd True Organics Charcoal Detox Pore Gel Cleanser ($24), Nutra-Lift Rejuvenating Nano Reneu with Growth Factors ($48), Arcona Vitamin A Complex ($68);