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This week

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President Donald Trump

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told pregnant women

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not to take Tylenol

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as his administration

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warned of an association

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with acetaminophen

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and autism.

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I think the best answer

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that we have

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and that we can tell

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patients of ours confidently

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is that the

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really good science

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and good studies

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do not support that

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Tylenol causes autism.

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We do have decades

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of research showing

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that things

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like maternal fever

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and pain during

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pregnancy can have

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significant risks

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including some

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developmental delays

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or differences.

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But no

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there's no evidence

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of a causal relationship

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at this time.

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Now the number of children

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diagnosed with autism

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has been on the rise.

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Do researchers

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know why?

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The newest

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prevalence rates

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it has been increasing

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for probably, prevalence

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has been increasing

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for the past 20 years.

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I think now

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we're at 1 in 31

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as the most recent numbers.

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And there are likely

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there are many

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different reasons

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for that.

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But certainly

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there is not one cause.

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And I do

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just want to point out

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that the use of acetaminophen

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Tylenol, has plateaued

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or decreased

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over the past 20 years.

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So it would be

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hard to explain

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the decrease in that

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with the increase

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in autism, if there

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was a causal relationship.