Wednesday, January 17, 2018

timing of nutritional supplements

Friendly User's Guide for the Timing of Nutritional Supplements

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  • January 17, 2018 • 95,841 views
  • Edition: English



Story at-a-glance
  • Fifty-two percent of American adults reported using nutritional supplements in 2012, a statistic that has remained stable since 1999. Americans spent $21 billion on nutritional supplements in 2015
  • While the use of multivitamins has decreased somewhat, use of vitamin D and omega-3 supplements have dramatically increased between 1999 and 2012
  • While dietary supplements are generally safe, when and how you take them — such as with or without food, or before or after exercise — can make a difference both in terms of safety and effectiveness
  • Since multivitamins contain an array of both water- and fat-soluble vitamins, it’s generally recommended you take half of your daily dose in the morning, with breakfast, and the other half with your main meal
  • Studies have shown that taking antioxidant supplements immediately prior to exercise has the curious effect of decreasing insulin sensitivity. It also hampers your body’s ability to defend itself against oxidative damage
30 Tips in 30 Days Designed to Help You Take Control of Your Health
This article is part of the 30 Day Resolution Guide series. Each day a new tip will be added designed to help you take control of your health. For a complete list of the tips click HERE
By Dr. Mercola
According to an investigation published in JAMA in 2016, 52 percent of American adults reported using nutritional supplements in 2012, a statistic that has remained stable since 1999.1 While the use of multivitamins has decreased somewhat, from 37 to 31 percent in that timeframe, use of vitamin D and omega-3 supplements have dramatically increased.
Vitamin D use jumped from just over 5 percent to 19 percent, and fish oil supplements increased from just over 1 percent to 12 percent. Among the most popular supplements are probiotics, omega-3, multivitamins, vitamin C, turmeric, calcium and magnesium.2 In all, Americans spent an estimated $21 billion on nutritional supplements in 2015.3
While dietary supplements are generally safe, when and how you take them — such as with or without food, or before or after exercise4 — can make a difference both in terms of safety and effectiveness. Certain supplements may also be contraindicated for certain health conditions or if you’re taking a particular drug. Following, you’ll find helpful guidance on the use of common supplements, including many sold in my online store.
Quick Guide to the Timing of Supplements

On the Timing of Vitamins and Minerals
Since multivitamins contain an array of both water- and fat-soluble vitamins, and in some cases minerals as well, it’s generally recommended you take half of your daily dose in the morning, with breakfast, and the other half with your main meal (dinner for most people, or lunch if you’re intermittently fasting). While you may not notice any ill effects if you take it on an empty stomach, taking your multivitamins with food is a safer bet overall.
Both B vitamins and nonliposomal vitamin C may cause stomach upset and nausea when taken on an empty stomach, for example, and fat-soluble vitamins will do you little good unless you take them with a small amount of fat, such as an egg or half an avocado. Avoid going overboard on the fat, however, as too much grease can interfere with the absorption of water-based vitamins.
When taking individual vitamins and minerals, you may need to pay attention not only to the timing of them, but also their combination with other supplements you’re taking, and their ideal ratios. For example:
• Fat-soluble vitamin K2 is best taken with your largest meal that contains fat. This could be during the day or at your evening meal. Calcium can be taken during the day but magnesium is best taken at night, without food. Unfortunately, the ideal ratio of vitamin K2 to D is still undetermined, so there are no hard and fast rules here. Some experts suggest 200 micrograms of vitamin K2 per day will meet the needs of the “average” healthy person, but if you’re taking high-dose vitamin D, you’ll need a bit more.5
While nontoxic, people who are taking vitamin K antagonists, i.e., drugs that reduce blood clotting by reducing the action of vitamin K, are advised to avoid vitamin K2 (MK-7) supplements.
• Zinc, on the other hand, should not be taken with a calcium and/or iron supplement, as these may hinder your body’s absorption of zinc.
• Similarly, avoid taking calcium or vitamin E with iron, as these nutrients interfere with iron absorption. Iron is also best taken on an empty stomach, either in the midmorning or midafternoon.6
• Magnesium, which is one of the most important minerals to supplement with as most all of us are deficient, helps your body relax, is best taken in the evening, and can be taken with or without food. If you’re also taking calcium, take them together.
If you exercise regularly, consider taking your calcium and magnesium in a ratio of one part calcium to two parts magnesium with your pre-workout meal.7 While the ideal ratio of magnesium to calcium is thought to be 1-to-1, most people get far more calcium than magnesium from their diet; hence, your need for supplemental magnesium may be two to three times greater than calcium.
• Oral B12, which tends to be poorly absorbed no matter what, is best taken on an empty stomach to optimize absorption. This is less of an issue if you are using a sublingual form of B12. B12 may interact with a variety of medications,8 including those for bone loss, cancer, gout, high blood pressure and acid indigestion, such as H2 blockers and proton pump inhibitors, so check for contraindications before you start taking it on a regular basis.
Timing of Fats and Fiber Supplements
Fiber may inhibit your body’s absorption of fat, so most fiber supplements, including “green” supplements like powdered spirulina and kelp, are best taken separately from any fatty acid supplements you may be taking. If you’re working out, remember that fiber supplements will slow the movement of food through your stomach and intestines.
For this reason, fiber is best taken at least three or four hours before exercise or competition. Alternatively, take it toward the end of the day. Whole husk psyllium, which is an excellent fiber supplement, is ideally taken two hours after a meal with a full glass of water.
As for omega-3 supplements such as fish- or krill oil, these could potentially cause indigestion if taken immediately before a workout, so consider taking them with breakfast, along with any multivitamin you may be taking. Also keep in mind that krill oil supplements are contraindicated for those allergic to shellfish, and neither fish nor krill oil should be taken if you have a blood coagulation disorder or are on anticoagulant medication.
Timing of Enzymes and Probiotics
Enzymes such as bromelain, papain, trypsin and others are used not only as digestive aids but also for enhancing muscle recovery and decreasing inflammation. Depending on your aim, you’ll need to alter the timing. When taken with a meal, they will improve your digestion. For muscle enhancement and/or anti-inflammatory effects, you’ll want to take them on an empty stomach post-workout, either in the morning or afternoon.

Probiotics help improve your gut microbiome by supplying beneficial bacteria. They are best taken on an empty stomach, two to three hours before your first meal, or after your final meal for the day. Also remember that to reap the benefits from a probiotic supplement, you need to reduce your intake of processed foods and sugar. Otherwise, you’re essentially just throwing your money away.

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