The new US dietary guidelines: what actually changed

The US dietary guidelines were rewritten in January 2026, and the coverage has been mostly about the politics. Here is what changed in the numbers, which is the part that affects what you log.

Protein went up by about half

The old recommendation was 0.36 g of protein per pound of body weight — the RDA, a floor designed to prevent deficiency rather than a target for health.

The new range is 0.54 to 0.73 g per pound, roughly 1.2 to 1.6 g per kg.

For a 170 lb adult that moves the daily figure from about 61 g to somewhere between 92 and 124 g. If you have a protein goal set in any tracker, it was probably built on the old number.

Worth saying plainly: most people in the US already eat in the new range without trying. The change matters most if you are older, eating in a calorie deficit, or on a GLP-1 medication — all situations where protein needs rise and intake usually falls.

Added sugar stopped being a percentage

The old limit was 10% of daily calories — 50 g on a 2,000 calorie day. A single can of regular soda is about 39 g, so the limit was technically generous and practically invisible.

The new guidance says no amount of added sugar is part of a healthy diet, and gives a working ceiling of 10 g per meal for when you do eat it.

That is a much more usable number. A percentage of daily calories is something you can only evaluate at midnight. Ten grams is something you can evaluate while holding the jar.

Saturated fat did not move

It is still capped at 10% of daily calories. About 22 g on a 2,000 calorie day.

This is where the criticism lands. The guidelines kept the cap while flipping the food pyramid to put steak, butter and full-fat dairy near the base. You can follow the imagery or you can follow the number, and on many days you cannot do both.

The graphic says eat more of the foods the text tells you to limit. That is not a subtle tension.

What to actually do with this

Three practical moves:

• Recheck your protein goal. If it was set from the old RDA it is probably 30–50% too low for the new guidance.
• Switch added sugar from a goal to a cap, per meal. The new framing is a ceiling, and a ceiling behaves differently from a target — it wants a warning when you cross it, not a progress bar filling up.
• Track saturated fat separately from total fat. The cap is on the saturated fraction, and total fat tells you nothing about whether you are near it.

All three are things a tracker either does or does not let you do. If yours only counts calories and three macros, the second and third are not available to you at all.

The honest caveat

Dietary guidelines are policy documents. They are built from evidence, but also from committee process, industry comment periods and the politics of the moment — and this edition drew unusually pointed criticism from nutrition researchers for how it weighted the first against the last.

Treat the protein range as well-supported, the per-meal sugar framing as a sensible practical rule, and the imagery as marketing. The saturated fat cap survived the rewrite intact, which tells you something about how solid the evidence under it is.