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How Much Vitamin C Is Too Much? Key Facts About Vitamin C Intake

How Much Vitamin C Is Too Much? Key Facts About Vitamin C Intake

Vitamin C, less commonly known as L-ascorbic acid, is a natural and essential nutrient found in numerous fruits and vegetables. It is responsible for the synthesis of particular neurotransmitters, collagen, and L-carnitine, and it also helps mediate metabolism of proteins.

Neurotransmitters are chemical messengers that orchestrate the execution of vital functions such as motor behavior, memory, learning, mood and sleep to name a few. Collagen is a structural protein and one of the primary components of connective tissues and L-carnitine is an amino acid derivative  that plays a role in fat metabolism.

Moreover, within the body vitamin C operates as a key antioxidant which is able to govern the generation of additional antioxidants such as vitamin E, and can further help absorption of other nutrients, mainly iron. [1] Since humans are incapable of endogenously manufacturing this water-soluble vitamin, acquiring it through diet is necessary for certain imperative biological functions to occur.

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Can I take too much vitamin C?

While the importance of vitamin C intake may be fairly well-known, is there a limit to how much of this essential vitamin your body can handle?

Research says yes, and here’s why: as previously mentioned, vitamin C is water-soluble meaning it dissolves in water, and therefore is not stored in the body. [2] Rather, it is eliminated once excess amounts are reached, creating a false sense of comfort for ingesting too much vitamin C.

However, a recent study demonstrated the dangers of overdoing this nutrient. A team of British scientists conducted a study in which participants were administered more than 6 times the recommended daily dose for 6 weeks. They found that in such high doses vitamin C damaged DNA by converting iron stores into harmful ferrous iron which damages internal organs. [3]

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Beyond this, numerous studies dating back to the 70s have indicated a correlation between excessive vitamin C and damage of genetic material. Further, the department of Food Science and Human Nutrition at Michigan State University has highlighted the potentiality of excess nutrient intake to result in toxicity. [4]

What does too much vitamin C look like?

Now that it has been established it’s possible and harmful to ingest too much vitamin C, how do you know if you are exceeding appropriate doses?

The main indicator is gastrointestinal distress: nausea, indigestion, fatigue, diarrhea, vomiting and upset stomach are a few examples of possible symptoms. [5] It also can manifest as hemochromatosis, hormone imbalances, kidney stones, and poor athletic performance. Hemochromatosis can be toxic and in severe cases result in organ failure, since it is the excessive production of iron in the body.

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Hormone disruption can interfere with the first stages of pregnancy increasing the probability of birth defects since vitamin C can inhibit release of certain sex hormones. Kidney stones are mineral deposits that form within the kidneys resulting in severe pain. In the process of vitamin C metabolism, some are converted into oxalate which promotes the development of kidney stones.

Furthermore, too much vitamin C has been shown to reduce endurance in athletes through inhibition of the body’s cellular alterations while exercising.

How much should I take?

So vitamin C is a critical nutrient but when taken in excess causes extreme discomfort and harmful symptoms, how much are you supposed to ingest? The Food and Nutrition Board generated a recommended intake chart based on age and gender. [6]

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Ultimately, the daily intake should be between 65 and 90 mg and harmful effects begin to appear with continued intake exceeding 500mg over long periods of time, and 2000mg for a single day.

How can I get vitamin C?

The best sources of vitamin C is through digestion of natural fruits and vegetables. Some primary examples and amount of vitamin C in 100g portion: [7]

  1. Strawberries: 58.8mg (98% of the daily value)
  2. Oranges: 53.2mg (89% of the daily value)
  3. Peppers: 183.5mg (306% of the daily value)
  4. Broccoli: 89.2mg (149% of the daily value)
  5. Papaya: 60.9mg (102% of the daily value)
  6. Lemon: 100mg (166% of the daily value)
  7. Kale: 120mg (200% of the daily value)
  8. Brussel sprouts: 85mg (142% of the daily value)
  9. Kiwi: 92.7mg (155% of the daily value)
  10. Peas: 60mg (100% of the daily value)

If cannot be consumed naturally, supplementation is available to meet the recommended daily dose.

Featured photo credit: servingjoy.com via servingjoy.com

Reference

[1] https://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/
[2] http://www.consumerlab.com/answers/Is+it+possible+to+take+too+much+vitamin+C%3F/too_much_vitamin_c/
[3] http://www.nytimes.com/1998/04/09/us/taking-too-much-vitamin-c-can-be-dangerous-study-finds.html
[4] http://www.webmd.com/vitamins-and-supplements/nutrition-vitamins-11/fat-water-nutrient
[5] http://www.livestrong.com/article/499159-disadvantages-of-vitamin-c/
[6] https://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/
[7] http://www.health.com/health/gallery/0,,20745689,00.html

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Lindsay Benster

Student pursuing a degree in Behavioral Neuroscience at the University of San Diego

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Last Updated on November 19, 2019

20 Time Management Tips to Super Boost Your Productivity

20 Time Management Tips to Super Boost Your Productivity

Are you usually punctual or late? Do you finish things within the time you stipulate? Do you hand in your reports/work on time? Are you able to accomplish what you want to do before deadlines? Are you a good time manager?

If your answer is “no” to any of the questions above, that means you’re not managing your time as well as you want. Here are 20 time management tips to help you manage time better:

1. Create a Daily Plan

Plan your day before it unfolds. Do it in the morning or even better, the night before you sleep. The plan gives you a good overview of how the day will pan out. That way, you don’t get caught off guard. Your job for the day is to stick to the plan as best as possible.

2. Peg a Time Limit to Each Task

Be clear that you need to finish X task by 10am, Y task by 3pm, and Z item by 5:30pm. This prevents your work from dragging on and eating into time reserved for other activities.

3. Use a Calendar

Having a calendar is the most fundamental step to managing your daily activities. If you use outlook or lotus notes, calendar come as part of your mailing software.

I use it. It’s even better if you can sync your calendar to your mobile phone and other hardwares you use – that way, you can access your schedule no matter where you are. Here’re the 10 Best Calendar Apps to Stay on Track .

Find out more tips about how to use calendar for better time management here: How to Use a Calendar to Create Time and Space

4. Use an Organizer

An organizer helps you to be on top of everything in your life. It’s your central tool to organize information, to-do lists, projects, and other miscellaneous items.

These Top 15 Time Management Apps and Tools can help you organize better, pick one that fits your needs.

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5. Know Your Deadlines

When do you need to finish your tasks? Mark the deadlines out clearly in your calendar and organizer so you know when you need to finish them.

But make sure you don’t make these 10 Common Mistakes When Setting Deadlines.

6. Learn to Say “No”

Don’t take on more than you can handle. For the distractions that come in when you’re doing other things, give a firm no. Or defer it to a later period.

Leo Babauta, the founder of Zen Habits has some great insights on how to say no: The Gentle Art of Saying No

7. Target to Be Early

When you target to be on time, you’ll either be on time or late. Most of the times you’ll be late. However, if you target to be early, you’ll most likely be on time.

For appointments, strive to be early. For your deadlines, submit them earlier than required.

Learn from these tips about how to prepare yourself to be early, instead of just in time.

8. Time Box Your Activities

This means restricting your work to X amount of time. Why time boxing is good for you? Here’re 10 reasons why you should start time-boxing.

You can also read more about how to do time boxing here: #5 of 13 Strategies To Jumpstart Your Productivity.

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9. Have a Clock Visibly Placed Before You

Sometimes we are so engrossed in our work that we lose track of time. Having a huge clock in front of you will keep you aware of the time at the moment.

10. Set Reminders 15 Minutes Before

Most calendars have a reminder function. If you have an important meeting to attend, set that alarm 15 minutes before.

You can learn more about how reminders help you remember everything in this article: The Importance of Reminders (And How to Make a Reminder That Works)

11. Focus

Are you multi-tasking so much that you’re just not getting anything done? If so, focus on just one key task at one time. Multitasking is bad for you.

Close off all the applications you aren’t using. Close off the tabs in your browser that are taking away your attention. Focus solely on what you’re doing. You’ll be more efficient that way.

Lifehack’s CEO has written a definitive guide on how to focus, learn the tips: How to Focus and Maximize Your Productivity (the Definitive Guide)

12. Block out Distractions

What’s distracting you in your work? Instant messages? Phone ringing? Text messages popping in?

I hardly ever use chat nowadays. The only times when I log on is when I’m not intending to do any work. Otherwise it gets very distracting.

When I’m doing important work, I also switch off my phone. Calls during this time are recorded and I contact them afterward if it’s something important. This helps me concentrate better.

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Find more tips on how to minimize distractions to achieve more in How to Minimize Distraction to Get Things Done

13. Track Your Time Spent

When you start to track your time, you’re more aware of how you spend your time. For example, you can set a simple countdown timer to make sure that you finish a task within a period of time, say 30 minutes or 1 hour. The time pressure can push you to stay focused and work more efficiently.

You can find more time tracking apps here and pick one that works for you.

14. Don’t Fuss About Unimportant Details

You’re never get everything done in exactly the way you want. Trying to do so is being ineffective.

Trying to be perfect does you more harm than good, learn here about how perfectionism kills your productivity and how to ditch the perfectionism mindset.

15. Prioritize

Since you can’t do everything, learn to prioritize the important and let go of the rest.

Apply the 80/20 principle which is a key principle in prioritization. You can also take up this technique to prioritize everything on your plate: How to Prioritize Right in 10 Minutes and Work 10X Faster

16. Delegate

If there are things that can be better done by others or things that are not so important, consider delegating. This takes a load off and you can focus on the important tasks.

When you delegate some of your work, you free up your time and achieve more. Learn about how to effectively delegate works in this guide: How to Delegate Work (the Definitive Guide for Successful Leaders)

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17. Batch Similar Tasks Together

For related work, batch them together.

For example, my work can be categorized into these core groups:

  1. writing (articles, my upcoming book)
  2. coaching
  3. workshop development
  4. business development
  5. administrative

I batch all the related tasks together so there’s synergy. If I need to make calls, I allocate a time slot to make all my calls. It really streamlines the process.

18. Eliminate Your Time Wasters

What takes your time away your work? Facebook? Twitter? Email checking? Stop checking them so often.

One thing you can do is make it hard to check them – remove them from your browser quick links / bookmarks and stuff them in a hard to access bookmarks folder. Replace your browser bookmarks with important work-related sites.

While you’ll still checking FB/Twitter no doubt, you’ll find it’s a lower frequency than before.

19. Cut off When You Need To

The number one reason why things overrun is because you don’t cut off when you have to.

Don’t be afraid to intercept in meetings or draw a line to cut-off. Otherwise, there’s never going to be an end and you’ll just eat into the time for later.

20. Leave Buffer Time In-Between

Don’t pack everything closely together. Leave a 5-10 minute buffer time in between each tasks. This helps you wrap up the previous task and start off on the next one.

More Time Management Techniques

Featured photo credit: Unsplash via unsplash.com

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