low-sugar diet

Low-sugar diet — is a dietary approach aimed at reducing the intake of simple carbohydrates and added sugars that can affect metabolism, gut microbiota, the immune system, and brain function.

We often use this diet as part of a comprehensive approach for neuroimmune and neurometabolic conditions.

It may be beneficial for children and adults with:

Why can excess sugar be a problem?

Sugar and simple carbohydrates quickly raise blood glucose levels. In response, the body produces insulin to lower these levels.

Frequent consumption of large amounts of sugar may lead to:

  • sharp fluctuations in glucose levels;
  • energy “spikes and crashes”;
  • increased inflammatory processes;
  • changes in gut microbiota composition;
  • overgrowth of yeast and opportunistic bacteria;
  • disruptions in metabolic processes in the brain.

For children with neuroimmune conditions, these factors may additionally affect behavior, sleep, and cognitive functions.

Why is this important for children with ASD and PANS/PANDAS/PITANDS?

Some children with ASD and PANS/PANDAS/PITANDS may have:

  • metabolic особенностей glucose metabolism;
  • gut microbiota dysbiosis;
  • increased inflammatory responses;
  • neurotransmitter regulation disturbances.

Excess sugar can:

  • stimulate inflammatory processes;
  • worsen gut bacterial imbalance;
  • affect neurotransmitter synthesis;
  • trigger fluctuations in behavior and energy.

In some children, this may present as:

  • hyperactivity;
  • irritability;
  • difficulty concentrating;
  • sudden mood changes;
  • sleep disturbances;
  • increased stereotyped behaviors;
  • cravings for sweets.

Key principles of a low-sugar diet

The main goal of this diet is to stabilize blood glucose levels and reduce metabolic and inflammatory stress on the body.

Key principles include:

  • limiting added sugars;
  • reducing simple carbohydrates;
  • increasing the proportion of protein and healthy fats;
  • choosing whole foods;
  • maintaining regular meals without sharp glucose fluctuations.

Foods to limit

Foods high in sugar or simple carbohydrates include:

  • Added sugars: white sugar, brown sugar, glucose syrup, corn syrup, fructose syrup.
  • Sweets: candies, chocolate bars, cookies, cakes, ice cream.
  • Sugary drinks: soft drinks, fruit juices, sweetened yogurts, energy drinks.
  • Refined carbohydrates: white bread, pastries, sugary cereals, white rice, sweet baked goods.

Foods to include in the diet

  • Protein sources: meat, poultry, fish, eggs, legumes (if well tolerated).
  • Vegetables: broccoli, zucchini, cucumbers, carrots, cauliflower, pumpkin, leafy greens.
  • Fruits (in moderation – 20–25 g/kg body weight): berries, apples, pears, kiwi.
  • Complex carbohydrates: buckwheat, quinoa, brown rice, millet, oats.
  • Healthy fats: olive oil, avocado, nuts, seeds.

Stevia is used as a sugar substitute.

Practical recommendations

To make the diet effective, it is helpful to follow a few simple rules:

  • avoid added sugar in beverages;
  • choose whole foods;
  • combine carbohydrates with protein and fats;
  • avoid frequent snacking on sweets;
  • read ingredient labels.

Even foods that do not taste sweet may contain significant amounts of hidden sugar.

Is it necessary to completely eliminate sugar?

Complete elimination of sugar is not always necessary. In most cases, it is enough to significantly reduce added sugars and replace them with more balanced carbohydrate sources.

The main goal is stable energy levels and reduced metabolic stress on the body.

Important

A low-sugar diet is part of a comprehensive approach to patient care and support.

At Vivere Clinic, nutrition is considered alongside other important factors:

  • gut microbiota status;
  • immune system function;
  • neuroinflammatory processes;
  • metabolic characteristics;
  • mitochondrial function.

An individualized approach makes it possible to choose the most effective strategy for each patient.