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Vitamin K, a fat-soluble micronutrient, occupies a critical position in the realm of pharmaceutical sciences due to its diverse roles in human health. Comprising several forms, with K1 (phylloquinone) and K2 (menaquinones) being the primary types, vitamin K is well-known for its pivotal role in blood clotting. However, recent research has unveiled its broader contributions to bone health, cardiovascular function, and cellular processes. This article aims to provide a comprehensive overview of the health benefits associated with vitamin K, emphasizing its significance in pharmaceutical considerations.

What are the 5 health benefits of vitamin A, backed up by science?

1.Promotes eye health and protects your eyes from age-related decline

Vitamin A is crucial for preserving healthy eyesight. Your eyes need the vitamin to be able to convert the light that enters them and turn it into an electrical signal that can be sent to your brain. Furthermore, one of the first symptoms of vitamin A deficiency could be night blindness, also known as nyctalopia. This is because the vitamin is a major component of the pigment rhodopsin. The retina of your eye contains rhodopsin, and it is extremely sensitive to light. People who have this condition can still see normally during the day, but have trouble seeing in darkness because their eyes have a hard time picking up light.

Additionally, if you consume adequate amounts of beta-carotene, that could help slow the decline in eyesight that often comes with aging.  However, note that according to a recent Cochrane review, beta-carotene supplements alone won’t prevent or delay the decline in eyesight caused by AMD.

2. Vitamin A Health Benefits: it contributes to a healthy Immune system.

Vitamin A is essential for maintaining your body’s immunity. This includes the mucous barriers in your eyes, lungs, gut, and genitals which help trap bacteria and other infectious agents.

Furthermore, it is also included in the production and function of white blood cells, which are your body’s first line of defense against viruses and harmful bacteria. They capture and clear these invaders as well as other pathogens from your bloodstream.

What this means is that in case you suffer from Vitamin A deficiency, you have a higher risk of getting infected and that can lead to a delay in recovery when you get sick.

3. Helps reduce the risk of acne 

People with this condition develop many spots and blackheads, mostly on the face, back, and chest, that can be even painful.

According to specialists, these spots occur when the sebaceous glands get clogged up with dead skin and oils. The hair follicles on your skin have these glands which produce sebum –  an oily, waxy substance that keeps your skin lubricated and waterproof. Although acne is physically harmless, it could have a serious effect on people’s mental health and lead to low self-esteem, anxiety, or even depression. This condition can sometimes occur for more than two or three years.

Right now the exact role that vitamin A plays in the development and treatment of acne remains unclear, however, according to specialists a deficiency in this vitamin could increase the risk of developing acne. The reason is the fact that this deficiency can cause an overproduction of the protein keratin in your hair follicles. Furthermore, this increases your risk of acne because it becomes more difficult for dead skin cells to be removed from hair follicles, leading to blockages. This is why many medications for treating acne contain vitamin-A.

4.  Supports healthy bones

There is a particular set of nutrients that your body needs in order to maintain healthy bones as you age – these include protein, calcium, and vitamin D. However, consuming enough vitamin A is also necessary for proper bone growth and development. In case you suffer from a deficiency in this vitamin that can lead to poor bone health.

In fact, according to science people with lower blood levels of vitamin A are at a higher risk of bone fractures than people with healthy levels. However, keep in mind that vitamin A, alone does not determine the risk of fractures. To get to that point of bad bone health, you would have to be deficient in many other essential nutrients.

5. Vitamin A Health Benefits — it Encourages and assists proper growth and reproduction

Vitamin A is a key compound required for maintaining a healthy reproductive system in both men and women. It is also vital for ensuring the normal growth and development of embryos during pregnancy. In pregnant women, vitamin A helps support the growth and development of many major organs and structures of the unborn child, including the skeleton, nervous system, heart, kidneys, eyes, lungs, and pancreas. However, consuming too much vitamin A during pregnancy can be harmful to the growing baby as well and may lead to birth defects.

What are the recommended dosages for Vitamin A?

The Recommended Dietary Allowance (RDA) for vitamin A can vary based on factors such as age, sex, and life stage. It’s important to note that vitamin A is measured in both retinol activity equivalents (RAE) and international units (IU). The RAE takes into account the different forms of vitamin A found in foods.

As of a last update in January 2022, here are the general RDAs for vitamin A:

1. Infants:

– 0-6 months: 400 micrograms RAE (1,333 IU) per day
– 7-12 months: 500 micrograms RAE (1,667 IU) per day

2. Children:

– 1-3 years: 300 micrograms RAE (1,000 IU) per day
– 4-8 years: 400 micrograms RAE (1,333 IU) per day
– 9-13 years: 600 micrograms RAE (2,000 IU) per day

3. Adolescents and Adults:

– Males 14-18 years: 900 micrograms RAE (3,000 IU) per day
– Females 14-18 years: 700 micrograms RAE (2,333 IU) per day
– Males 19 years and older: 900 micrograms RAE (3,000 IU) per day
– Females 19 years and older: 700 micrograms RAE (2,333 IU) per day

Pregnant and lactating individuals have higher vitamin A requirements. The RDAs for pregnant individuals are generally 770 micrograms RAE (2,567 IU) per day, and for lactating individuals, it is 1,300 micrograms RAE (4,333 IU) per day.

It’s important to obtain vitamin A through a balanced diet that includes a variety of foods rich in this nutrient, such as liver, fish, dairy products, eggs, and colorful fruits and vegetables. Excessive intake of vitamin A, particularly from supplements, can be harmful, so it’s advisable to follow recommended guidelines and consult with a healthcare professional if considering supplementation, especially in high doses.


In conclusion, vitamin A emerges as a multifaceted micronutrient with a broad spectrum of health benefits. From its pivotal role in vision and immune system function to cellular growth, skin health, reproductive processes, and antioxidant properties, the therapeutic significance of vitamin A in pharmaceutical sciences is profound. A comprehensive understanding of vitamin A’s roles is imperative for healthcare professionals seeking to optimize patient outcomes through targeted pharmaceutical interventions across diverse health conditions.


As a service to our readers, MVS Pharma GmbH publishing provides access to our library of archived content — in our blog. Please note the date of last review or update on all articles. No content on this site, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.

Dr. Disha Trivedi

Dr. Disha Trivedi is PhD in Molecular Genetics and Biotechnology. She is working as a medical writer and researcher at MVS Pharma GmbH.