Most adults should keep added sugar under 10% of calories—about 50 g (12 tsp) on a 2,000-calorie diet; many health bodies urge less.

Yes, for fatty liver, cap free sugars to 5%–10% of calories and avoid sugary drinks.

For most heart patients, aim for no more than 25–36 g of added sugar per day, leaning lower unless your clinician gives a different plan.

For type 2 diabetes, keep added sugars under 10% of calories and manage total carbs to hit your glucose targets.

For prediabetes, keep added sugars under 10% of calories (about 12 teaspoons on 2,000 calories); many adults aim for 25–36 grams a day.

On keto, keep added sugar near zero and total daily carbs to 20–50 grams to stay in ketosis.

The general target for added sugar in pregnancy is under 10% of calories, which you can translate to grams and teaspoons per day.

Most teens should keep added sugar near 25 grams a day, and stay under 10% of daily calories.

Aim for under 25 g added sugar per day for children 2–18, and avoid added sugar for kids under 2.