How Much Sugar Is Safe?
The WHO cites solid evidence that keeping free-sugar intake below 10 percent of total energy reduces the risk of overweight, obesity, and tooth decay. For additional benefits, the WHO suggests cutting it to under 5 percent — about 25 grams or 6 teaspoons a day.
Free sugars mean sugars added by manufacturers, cooks, or consumers, plus natural sugars in honey, syrups, and fruit juice. Natural sugars in whole fruit, vegetables, and milk are excluded because they come with essential nutrients.
From Obesity to Diabetes
Excess calories from high-sugar foods and drinks contribute to unhealthy weight gain. Beyond that, chronic sugar intake triggers insulin resistance: body cells stop responding to insulin, forcing the pancreas to produce more — the pathway to type 2 diabetes.
The liver bears a burden too. Fructose — a component of sugar — is processed in the liver; the surplus is converted into fat that accumulates and causes non-alcoholic fatty liver disease (NAFLD).
Heart, Cancer, and More
A BMJ umbrella review summarizing 73 research reviews found harmful links between sugar consumption and dozens of health problems: 18 metabolic outcomes (diabetes, gout, obesity), 10 heart outcomes (hypertension, heart attack, stroke), 7 cancers (breast, prostate, pancreatic), plus asthma, tooth decay, depression, and death.
Sugar-sweetened beverages are the prime target for reduction because they are high in calories but low in nutrients — replacing them with water is the easiest step.
How to Cut Back on Sugar
Start with the biggest wins: swap soda and packaged sweet tea for water or unsweetened tea, read labels to spot hidden sugars such as high-fructose corn syrup, and choose whole foods over packaged snacks.
Cooking at home gives you full control over added sugar. Snacking on fresh fruit is far better than cakes and candy — naturally sweet plus fiber.
Teach children early to love water and fruit as snacks, since eating habits formed in childhood tend to last into adulthood.
