The harm of sugar - a new study. Influence of sugar drinks on the development of cancer

The harm of sugar - a new study. Influence of sugar drinks on the development of cancer

The harm of sugar - a new study. Influence of sugar drinks on the development of cancer
The harm of sugar - a new study. Influence of sugar drinks on the development of cancer

A new statistical study analyzing the impact of eating habits on the health indicators of 42,000 women over 24 years shows a link between the consumption of sugary drinks - and 2 times higher risk of developing colorectal cancer.

We are talking mainly about sugary carbonated drinks and juices containing up to 25 g of sugar per glass - about 50% of the maximum daily sugar intake. What exactly is the harm of sugar to metabolic and metabolic processes?

// The  harm of added sugar

The harm of added sugar

First of all, let's make a reservation that talking about the dangers of sugar is not at all limited to discussing exclusively white sugar on the table. A large number of ready-made foods (both pastries and beverages, snacks and cereals) contain significant amounts of added sugar.

Data from the USDA and the US Department of Health show that exceeding 10% of sugar in daily calories in the long run leads to the development of a number of serious chronic diseases (obesity, diabetes, hypertension) (.

Among other things, the harm of sugar drinks is explained not only by the action of sugar - most often they contain fructose syrup and salt. Eating excessive amounts of fructose provokes a violation of the metabolic processes of tryptophan, folic acid and zinc, and excess salt provokes high blood pressure.

Daily sugar values

In fact, the current position of today's sugar researchers on acceptable daily doses is stricter than the advice of most nutritionists when it comes to weight loss.

The recommendation with a caloric norm of 2000 kcal (most women) is to limit sugar to 7%, with a caloric norm of 2800 kcal (most men) - up to 8% and with a caloric norm over 3000 kcal (athletes) - 9-10%.

For comparison, the average Russian consumes 110 grams of sugar per day (about 20% of calorie intake).

//   Calorie-based sugar levels²:

  • 2000 kcal - max. 7% (45 g sugar)
  • 2800 kcal - max. 8% (55 g sugar)
  • 3000 kcal - 9-10% (65-75 g sugar)

Problems with the absorption of fructose

Problems with the absorption of fructose

In the production of both sweet drinks and all kinds of desserts and pastries, everywhere is used not ordinary sugar, but liquid fructose syrup (most often obtained from corn).

It mixes more easily with other ingredients, adds airiness to the texture, prolongs the shelf life - and does not taste like sugar itself.

Obviously, however, the body of most people is able to absorb no more than 25-50 g of fructose - and exceeding this norm leads to difficulties with its absorption.

//   Primary symptoms:

  • flatulence
  • bowel dysfunction

//   Secondary symptoms:

  • bad mood and sleep problems (lack of tryptophan)
  • reduced testosterone in men (zinc deficiency)
  • impaired DNA replication (lack of folic acid)

What is the problem?

Unlike glucose, which requires a special enzyme to digest, fructose is much easier to convert into energy. It is absorbed in the colon and then transported to the liver, where it accumulates. However, the consumption of large amounts of fructose activates the biosynthesis of fatty acids.

Studies in 2020 show that the rapid accumulation of fat by eating ripe fruits high in fructose is part of the hibernation mechanism of animals - such metabolic changes can occur in humans, causing obesity, diabetes and hypertension3.

How exactly does sugar harm the metabolism?

How exactly does sugar harm the metabolism?

The main harm of sugar lies in the impairment of the ability to use the  final products of glycation  . Glycation is the process by which glucose or fructose molecules bind to proteins and fats in the human body, causing changes in them.

Although these processes are constantly present in the body, after reaching the age of 35 there is a sharp tendency to accelerate them - in fact, the accumulation of end products of glycation is an activator of the aging process and cell failure  4  .

In fact, to limit glycation processes, you need to strictly monitor your sugar intake - not exceeding the recommended daily dose.

//   In brief:

  • glycation - the ability of sugar to damage cells in the body
  • the result is a loss of the ability to resist oxidants
  • consequence - accelerating aging

Effects on skin aging

Collagen and elastin are the proteins most vulnerable to glycation processes. They keep the skin supple and are responsible for the elasticity of the tissues - however, by the age of 35 the body lacks about 15% collagen, and by the age of 45 - more than 30%.

Among other things, excess sugar leads to a change in the structure of collagen - it becomes harder. The result is roughening of the skin and earlier appearance of wrinkles.


An increasing number of scientific studies have linked excess daily sugar intake to health risks, including the risk of colorectal cancer (due to increased intestinal inflammation) and earlier aging (due to glycation end products).

The information is for informational purposes only. It should not be used for diagnosis or treatment.