Recalls & Warnings (50)

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Clinical Updates (11)

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9/27/2014

Vitamin D for Asthma

A pilot study in older people with asthma found that daily supplementation with vitamin D improved symptoms among those with uncontrolled asthma. These people were also most likely to have had low blood levels of vitamin D to start. Get the details, including the dose used, and more information about the role of vitamin D in asthma, in the updated Vitamin D Supplements Review >> 
4/17/2016

Vitamin D and Allergy

Vitamin D is known to modulate the immune system. Having sufficient levels is associated with reduced risk of allergy and asthma. A recent study showed that giving vitamin D to pregnant women and their infants resulted in fewer infants being allergic to house dust mites and needing to see a doctor for asthma. For details, see "Allergy," as well as "Asthma," in the What It Does section of the Vitamin D Supplements Review >>
8/02/2016

Vitamin D for Asthma

Short term supplementation with vitamin D improved symptoms of asthma in children, according to a new study. Get the details in the "What It Does" section in our Vitamin D Supplements Review >>
10/24/2017

Vitamin D for Asthma

Taking vitamin D can reduce the number of asthma exacerbations that require corticosteroid treatment, according to a recent study. Get the details in the "What It Does" section of the Vitamin D Supplements Review >> [Also see our Top Picks among vitamin D supplements in the Review.]
1/26/2019

Fish Oil for Asthma?

Can high-dose fish oil help people with asthma? See what a study recently found in the "What It Does" section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.
1/03/2017

Reducing Asthma Risk in Children With Fish Oil

A major new study showed that giving fish oil to pregnant women reduces the risk of asthma and wheezing in their offspring. For details, see the "What It Does" section of the Fish Oil Supplements Review >>
4/20/2019

Curcumin for Asthma?

Find out if curcumin (from turmeric powder) decreased asthma symptoms in a recent study, as described in the What It Does section of the Curcumin and Turmeric Supplements & Spices Review. Also see our Top Picks for curcumin and turmeric supplements.
8/29/2020

Vitamin D for Asthma?

Does giving high-dose vitamin D to children with asthma reduce their need for inhaled steroids or allow them to go longer between attacks? Find out what a recent study showed in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
5/21/2014

Vitamin D Helpful for Asthma?

A recent study reported that giving high-dose vitamin D to asthma patients did not significantly reduce the rate of failure with conventional medications. However, a closer look at the study suggests that this conclusion is misleading and that a benefit may exist. Get the details in the update to the Vitamin D Supplements Review >> 
9/07/2016

Vitamin D & Asthma

A daily, moderate dose of vitamin D reduces hospitalizations and use of steroid medication in people with mild to moderate asthma, according to a new study. Get the details in the "What It Does" section of the Vitamin D Supplements Review >>
11/08/2015

Too Much Vitamin D Can Increase Colds

A recent study in people with asthma found that giving high-dose vitamin D increased the risk of developing a cold among those who achieved higher levels of vitamin D or were African-American. Nearly half of those in the study were not vitamin D deficient to start. In contrast, studies have found that giving moderate doses of vitamin D to people who are vitamin D deficient decreases the risk of colds. The point, in our opinion: Maintain an adequate, but not excessive, level of vitamin D. For details (including dosage, levels, and our tests of products) see the Vitamin D Supplements Review >>