6 Roles of Vitamins in the Body from a Bodybuilding Perspective

Index:
1. What are vitamins
2. 6 Roles of Vitamins in our body
3. Which vitamins are needed, and how should they be taken
4. When to take the vitamins
5. Why Vitamins Matter for Athletes and Active Individuals

1. What Are Vitamins

As a professional bodybuilder and Mediterranean champion, I’ve seen firsthand how essential vitamins are for both performance and overall health. While most people focus on protein and calories, vitamins play a crucial role in energy metabolism, muscle recovery, and immune support. In high-performance environments like contest prep, where the body is under stress and calorie intake is restricted, ensuring adequate vitamin intake becomes even more important to maintain strength, focus, and physical condition.

Vitamins are organic molecules that have a vital role in our metabolism, and they are available in food but in small quantities, which need to be consumed from an outside source. Even I, as a bodybuilder I cannot cope with all the vitamins which I receive from Salad or vegetables, it won’t be enough or complete

2. 6 Roles of Vitamins in the Body

Vitamins play an essential role in our bodies those are :

1. Immunity: Vitamins A, Vitamin C, and Vitamin D are important, which support a higher immune system. For example, Vitamin A gives a better immunity against inflammation, Vitamin C fights stress by reducing cortisol levels, while Vitamin D protects against respiratory infections and regulates the immune system
2. Antioxidation: so there is an oxidation process which occurs naturally in the blood, which causes molecules to be unstable, which are called (Free Radicals). These are very bad for your health; they destroy protein and DNA that can accelerate aging and stress, so using Vitamin C and Vitamin E protects the cell membranes from damage caused by free radicals
3. Tissue and Bone support: Vitamin D, which occurs naturally with sun exposure, is also a Vitamin boost for calcium and phosphorus absorption to support stronger bones and teeth. Vitamin K is also important for bone health, while Vitamin C and A support healthier skin and tissue repair and help form Collagen
4. Vission Health: Vitamin A, which is rich in Carrots, Play important role in vision health, and it prevents night blindness. Vitamin A also forms rhodopsin, which increase sensitvity for vision in low light as well as supports retinal health
5. Blood Health: Iron is the most popular vitamin to increase your hemoglobin levels in the blood, which carries oxygen. Vitamin B12 produces red blood cells, which in turn combat anemia, which is rich in meat, fish, eggs, and dairy. Then we have Vitamin K, which prevents blood clotting, and also Vitamin E for blood circulation, also vitamin D regulates blood pressure
6. Energy and Metabolism: Vitamin B from B1 up to B12 are essential vitamins which boost energy levels by increasing the metabolism after consuming meals and boost nutrition in the body

3. Which vitamins are needed, and how should they be taken?

As we mentioned, there are plenty of vitamins that our body needs daily, whether you work out or not. These vitamins will be very tough to get all of them from just food, for example:

An average non-athletic adult needs at least 80mg a day. This is a minimum quantity for someone who doesn’t even do any activity per day, which is equal to about one large orange

How about for someone who do lot of activity, even walking will need around 200mg to 500mg and for an athlete will need from 500mg to 2000mg, for bodybuilders on a higher level they can require up to 3000mg per day, but its better to divide them 500mg each meal however most institues recommended the dosage maximum up to 2000mg for safety

With that said, it will be impossible to cope with the high requirements of such vitamins from food which is why we must consume them as a supplement. So, when should we take them?

Vitamins that give us energy should be taken post breakfast, where the body needs them the most; however, some vitamins that provide relaxation can be taken mid-day or before sleep

4. When to take the Vitamins

so let us take them one by one

1. Multi-vitamins: Often taken in the morning, but for athletes and bodybuilders, it is best to consume several multi-vitamins throughout the day, post each meal
2. Vitamin C: Best taken in the morning, but for athletes or highly active individuals should also be taken several time post meals, it is very effective to be consumed post-workout or heavy activity to reduce stress levels. It can also be taken before sleep to reduce cortisol
3. Iron: Generally should be taken away from meals, so either on an empty stomach or between meals for better absorption
4. Probiotics: Best to be taken before or after breakfast to ensure effective digestion throughout the day
5. Vitamin B complex: It is best to consume post breakfast, as it gives a lot of energy
6. Vitamin D3: It is always best to consume it in the morning, post breakfast
7. Magnesium: Increases relaxation and should be taken just before bed
8. Zinc: Best to be taken before bed as it promotes muscle growth, which helps recovery during sleep
9. Calcium: It is always better to takeit before bed as it aids in sleep, and it can alter the effect of other vitamins when taken in the morning
10. Omega-3: It can be taken anytime of the day with a meal

Essential vitamins vs non-essential vitamins:

Essential Vitamins: these are vitamins that our body cannot produce or produce in very low quantities, so you must obtain them from outside the body through food or supplements; otherwise, you will have a deficiency. those are

Vitamin A, Vitamin C, Vitamin D *, Vitamin E, Vitamin B1-12
* Vitamin D (formed by exposure to sunlight)

Non-Essential Vitamins: Those vitamins are produced normally in our bodies

Vitamin K

With that said, we understand that most vitamins are essential and our bodies cannot form them unless consumed from certain foods, so taking vitamin supplements is extremely important and gauarantee adequate supply of all vitamins daily, regardless of what food has been consumed

5. Why Vitamins Matter for Athletes and Active Individuals

As mentioned earlier and as an active competitive bodybuilder, I can tell you that yes, vegetables are essential to provide you with vitamins, but you still need to add an external source ,as you know many of the vitamins are exist in low quantities in fruits and vegetables as Vitamin C , we need much more than we can receive from just 3 oranges

While a balanced diet is the foundation, athletes often have higher nutrient requirements due to increased energy turnover, sweat losses, and the need to repair tissue damaged during training. Without adequate vitamin intake, athletes may experience decreased performance, increased muscle injuries, and prolonged recovery times.

if you need to know more the difference between natural and synthetic vitamins read below

Natural vs Synthetic Vitamins: What Should You Choose?

Reference

Core Scientific & Government Sources

1. National Institutes of Health (NIH) – Vitamins & Minerals Overview
   https://www.nccih.nih.gov/health/vitamins-and-minerals
   👉 Explains that vitamins are essential nutrients required for normal body function and overall health.

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2. PubMed – B Vitamins: Functions and Uses in Medicine
   https://pubmed.ncbi.nlm.nih.gov/35933667/
   👉 Shows that B vitamins act as cofactors in metabolism, energy production, and DNA synthesis.

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3. PubMed – Role of Vitamins and Minerals in Health and Diseases
   https://pubmed.ncbi.nlm.nih.gov/36437023/
   👉 Confirms vitamins play essential roles in disease prevention and overall health maintenance.

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4. PubMed (Review) – Immune Functions of Vitamins
   https://pubmed.ncbi.nlm.nih.gov/35056870/
   👉 Highlights the role of vitamins in supporting immune function and cellular defense systems.

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5. PMC – What Is a Vitamin? (Biochemical Functions)
   https://pmc.ncbi.nlm.nih.gov/articles/PMC12735764/
   👉 Explains how vitamins act as:

• coenzymes
• antioxidants
• regulators of metabolism and cell growth

This content is for informational purposes only and does not replace professional Medical advice
Always consult a healthcare professional before starting any training program.

Written by Mohamed Riad – Mediterranean Champion Bodybuilder (2023, 2025)
specializing in advanced training and performance health
Want a personalized training and nutrition plan? Contact me today at the link below:
https://www.instagram.com/mohamedriadofficial/