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8 8 900 Pregnant 1,000–1,300 700–1,250 350–400 27 11–12 1,000 Nursing 1,000–1,300 700–1,250 310–350 9–10 12–13 1,300

       * Adequate Intake (AI)

** The lower recommendation is for postmenopausal women taking estrogen supplements; the higher figure is for postmenopausal women not taking estrogen supplements.

Age (years)	Iodine (mcg)	Selenium (mcg)	Molybdenum (mcg)	Manganese (mg)*	Fluoride (mg)*	Chromium (mcg)*	Choline (mg)*
Males
19–30	150	55	45	2.3	4	36	550
31–50	150	55	45	2.3	4	36	550
51–70	150	55	45	2.3	4	30	550
71 and older	150	55	45	2.3	4	30	550
Females
19–30	150	55	45	1.8	3	25	425
31–50	150	55	45	1.8	3	25	425
51–70	150	55	45	1.8	3	20	425
71 and older	150	55	45	1.8	3	20	425
Pregnant	220	60	50	2.0	1.5–4.0	29–30	450
Nursing	290	70	50	2.6	1.5–4.0	44–45	550

       * Adequate Intake (AI)

       Adapted with permission from Recommended Dietary Allowances (Washington D.C.: National Academy Press, 1989), and DRI panel reports, 1997–2004

      Hankering for more details? Notice something missing? Right — no recommended allowances for fat, carbohydrates, and, of course, water. You can find those (respectively) in Chapters 7, 8, and 12.

      

The slogan “No Sale Ever Is Final,” printed on the sales slips at one of my favorite clothing stores, definitely applies to nutritional numbers. RDAs, AIs, and DRIs should always be regarded as works in progress, subject to revision at the first sign of a new study. In other words, in an ever-changing world, here’s one thing of which you can be absolutely certain: The numbers in this chapter will change. Sorry about that.

Chapter 4

      Bigger But Not Better

      IN THIS CHAPTER

      

Defining obesity

      

Listing the fattest and fittest states

      

Figuring out how much you should weigh

      

Understanding how you fit into the equation

      According to the Federal Centers for Disease Control (CDC), in 2016, nearly seven of every ten American adults was

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