In the short-term, eating too much sugar may contribute to acne, weight gain, and tiredness. In the long-term, too much sugar increases the risk of chronic diseases, such as type 2 diabetes and heart disease.
According to the
In this article, we look at how much added sugar a person should consume, the symptoms and impact of eating too much sugar, and how someone can reduce their sugar intake.
According to the
However, the guidelines advise that people limit added sugars to less than 10% of their daily calorie intake. For a daily intake of 2,000 calories, added sugar should account for fewer than 200 calories.
However, in 2015, the
Some people experience the following symptoms after consuming sugar:
- Low energy levels: A 2019 study found that 1 hour after sugar consumption, participants felt tired and less alert than a control group.
- Low mood: A
2017 prospective studyfound that higher sugar intake increased rates of depression and mood disorder in males.
- Bloating: According to Johns Hopkins Medicine, certain types of sugar may cause bloating and gas in people who have digestive conditions, such as irritable bowel syndrome (IBS) or small intestinal bacterial overgrowth (SIBO).
Consuming too much sugar can also contribute to long-term health problems.
Sugar feeds bacteria that live in the mouth. When bacteria digest the sugar, they create acid as a waste product. This acid can erode tooth enamel, leading to holes or cavities in the teeth.
People who frequently eat sugary foods, particularly in between mealtimes as snacks or in sweetened drinks, are more likely to develop tooth decay, according to Action on Sugar, part of the Wolfson Institute in Preventive Medicine in the United Kingdom.
A 2018 study of university students in China showed that those who drank sweetened drinks seven times per week or more were more likely to develop moderate or severe acne.
Additionally, a 2019 study suggests that lowering sugar consumption may decrease insulin-like growth factors, androgens, and sebum, all of which may contribute to acne.
Weight gain and obesity
Sugar can affect the hormones in the body that control a person’s weight. The hormone leptin tells the brain a person has had enough to eat. However, according to a
This may mean, that over time, a high sugar diet prevents the brain from knowing when a person has eaten enough. However, researchers have yet to test this in humans.
Diabetes and insulin resistance
A large prospective
High blood pressure
Excess sugar consumption can cause inflammation, oxidative stress, and obesity. These factors influence a person’s risk of developing cancer.
A review of studies in the Annual Review of Nutrition found a
Excess sugar in the diet leads to the formation of advanced glycation end products (AGEs), which play a role in diabetes. However, they also affect collagen formation in the skin.
According to Skin Therapy Letter, there is some evidence to suggest that a high number of AGEs may lead to faster visible aging. However, scientists need to study this in humans more thoroughly to understand the impact of sugar in the aging process.
A person can reduce the amount of added sugar they eat by:
- checking food labels for sweeteners
- reducing foods with added sugar
- avoiding processed foods in general
Checking food labels
Added sugar and sweeteners come in many forms. Ingredients to look out for on a food label
- brown sugar
- corn sweetener
- corn syrup
- high fructose corn syrup
- raw sugar
- malt syrup
- evaporated cane juice
- agave nectar
- maple syrup
- invert sugar
- fruit juice concentrates
- turbinado sugar
Some of these ingredients are natural sources of sugar and are not harmful in small amounts. However, when manufacturers add them to food products, a person might easily consume too much sugar without realizing it.
Reducing foods that contain added sugar
Some food products contain large amounts of added sugars. Reducing or removing these foods is an efficient way to reduce the amount of sugar a person eats.
Another common source of sugar is breakfast cereal. According to EWG, many popular cereals contain over 60% sugar by weight, with some store brands containing over 80% sugar. This is especially true of cereals marketed towards children.
Swapping these foods for unsweetened alternatives will help a person lower their sugar intake, for example:
- swapping soda for water, milk, or herbal teas
- swapping sugary cereals for low sugar cereal, oatmeal, or eggs
Avoiding processed foods
Manufacturers often add sugars to foods to make them more appealing. Often, this means people do not realize how much sugar a food contains.
By avoiding processed foods, a person can get a better sense of what their food contains. Cooking whole foods at home also means someone can control what ingredients they put into their meals.
People should see their doctor if they experience the symptoms of high blood sugar. According to the
- increased thirst and urination
- increased hunger
- blurred vision
- numbness or tingling in the hands or feet
- unexplained weight loss
- sores that do not heal
These symptoms may indicate a person has diabetes. A doctor can test for diabetes by taking a urine sample.
People should also speak to a doctor if they experience other symptoms after eating sugar, such as bloating.
Consuming too much added sugar has many adverse impacts on health, including tiredness and weight gain, and more severe conditions, such as heart disease. Added sugars are present in many processed foods and drinks.
People can reduce their sugar intake by knowing what to look for on food labels, avoiding or reducing common sources of sugar, such as soda and cereals, and prioritizing unprocessed whole foods.
If a person is concerned about weight gain, symptoms that may indicate diabetes, or other symptoms they experience after eating sugar, they should speak to a doctor.