August 25, 2026
The 25-Gram Rule: Where It Actually Comes From
25 grams of added sugar a day is the number SugarSage builds every ring and every star around. It isn’t a number we picked. It comes from the American Heart Association (AHA), and it’s worth knowing exactly where it comes from and what it actually means, rather than just trusting an app to enforce it.
Where the number comes from
The AHA recommends most women keep added sugar to no more than 25 grams (about 6 teaspoons) a day. Men get a slightly higher ceiling — 36 grams — reflecting average differences in caloric needs and body composition, not a difference in how sugar behaves. The recommendation is about added sugar specifically: sugar that’s stirred, poured, or manufactured into food, not the sugar naturally present in fruit, vegetables, or plain dairy.
For context, the average American adult takes in roughly 17 teaspoons of added sugar a day — nearly three times the AHA’s recommendation for women. That gap is the whole reason this matters: most people aren’t overdoing it on purpose. They simply have no visibility into where it’s coming from.
What 25 grams actually looks like
Numbers on their own are abstract. In real food, 25 grams disappears fast:
- One 12-ounce can of regular soda: ~39g — over the entire daily limit, alone
- One flavored yogurt cup: ~15–19g
- Two tablespoons of most bottled barbecue sauce: ~9–11g
- A single granola bar: ~8–12g
- One slice of store-bought bread: ~1–3g — small, but it adds up across a day of sandwiches
- A tablespoon of ketchup: ~4g
None of these are “junk food” in the way we usually mean it. That’s the actual problem the 25-gram rule exposes: added sugar mostly hides in foods that don’t taste distinctly sweet, in amounts too small to notice one at a time and too frequent to ignore in total.
Why a weekly total, not just a daily one
A single number for a single day can feel unforgiving — one birthday cake and the day is “ruined.” That’s not a useful way to build a lasting habit, and it isn’t how SugarSage treats it.
The daily 25-gram target is paired with a 175-gram weekly total (25 × 7). Stay under 25g on a given day, and you earn that day’s star. Go over on one day but stay under 175g for the full week, and you keep every star you earned — because one day was never supposed to define the whole picture. The week is the real unit that matters.
Where this app fits in
We didn’t build a calorie counter, and we didn’t build another list of forbidden foods. SugarSage tracks exactly one number, sourced from a real public health recommendation, and shows it to you plainly — a ring that fills up, a star you either keep or don’t, a week you can actually see. What actually changes with added sugar after 40 is the “why.” This is the “how much.”