# Nutrition and diets in HIV
Nutrition plays a role in how well the body responds to HIV treatment and how the immune system functions. Research from recent years focuses on patterns in nutrition that influence inflammation, weight, gut health and metabolic health in people living with and being treated for HIV.
Below we describe the diets and nutritional patterns mentioned or studied in medical literature. The main caveat: nutrition in HIV is always tailored – what works favorably for one person does not necessarily have the same effect for another.
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Protein-rich nutrition
ResearchediPositive results in clinical studies, not yet standard treatment
With protein-rich nutrition, one eats more foods containing proteins: meat, fish, eggs, dairy products, legumes and nuts. The goal is to maintain muscle and preserve strength.
Research shows that people with HIV more often experience muscle loss (sarcopenia), especially as they get older. Studies suggest that adequate protein intake and regular exercise help maintain muscle mass. A recent study (2026) on interventions for aging in HIV patients emphasizes that protein intake and physical training are important for maintaining physical strength and independence. In children and young people with HIV, nutritional support is also being examined, including protein, to support growth and development.
One risk is that certain unusual combinations of medicines (especially certain antiretroviral agents) can cause metabolic side effects, such as weight gain or fat accumulation. You discuss this with your healthcare provider.
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Nutrition with plenty of vegetables, fruit and whole grains (Mediterranean pattern)
ResearchediPositive results in clinical studies, not yet standard treatment
This nutritional pattern focuses on vegetables, fruit, whole grains, fish, olive oil and limited red meat. It is known to help reduce inflammation.
Because people with HIV can still have chronic inflammation even after successful treatment of viremia, researchers are investigating whether dietary patterns that lower inflammation markers – such as diets rich in plant-based substances and fish fats – may help. A recent study (2026) looked at the composition of bacteria in the gut ('microbiome') and inflammation in HIV patients. This shows that dietary choices can influence gut flora and the immune system. Nutrients with prebiotic or probiotic effects (such as fiber-rich foods and certain bacterial cultures) are also receiving attention.
The dietary pattern with plenty of fruit and vegetables also helps keep blood pressure and cholesterol healthy – something that is important for cardiovascular health in HIV.
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Limited intake of ultra-processed food
ResearchediPositive results in clinical studies, not yet standard treatment
Ultra-processed foods are products that have undergone much processing and contain many additives (sugar, salt, fats, additives): snack products, soft drinks, ready-made meals and so on.
A 2026 study in HIV patients showed that high consumption of ultra-processed foods is associated with changes in certain types of white blood cells. This could mean that much ultra-processed food affects how the immune system works. There was also a link with higher inflammation markers. This aligns with broader evidence that ultra-processed foods in the general population can carry health risks – and may be particularly relevant for people with HIV.
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Nutrition focused on gut health (prebiotics, probiotics, fiber-rich foods)
ResearchediPositive results in clinical studies, not yet standard treatment
This is about eating foods that feed and protect beneficial gut flora: plenty of vegetables, fruit, whole grains, legumes, and possibly fermented products (yoghurt, sauerkraut, miso).
A 2026 study examined how nutrition can strengthen the 'gut microbiota-immune axis' in HIV. The idea is that HIV (and its treatment) can damage the intestinal wall and thereby cause inflammation in the body. Nutrition that restores gut microbiota could help counteract this. Research also examines whether specific substances in plants (for example certain fibres and fermentation products) have this effect. However, this is still largely a research area; more evidence is needed.
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Alcohol and heavy drinking
Advised againstiProven ineffective or harmful, or dangerous in combination with your treatment
Drinking has multiple consequences for people with HIV. First, large amounts of alcohol can weaken the immune system – exactly the opposite of what you want. Second, alcohol can interfere with medication effectiveness and make side effects worse. Third, research shows that alcohol (especially in large quantities) combined with certain eating patterns can further damage metabolic health and immune function.
A study (2026) looked at drinking behaviour and PrEP use (preventive medication); it showed that heavy drinkers had more difficulty adhering to their treatment. It is also known that alcohol can contribute to heart and liver disease – conditions that are already risk factors for people with HIV.
Consumption of alcohol is therefore discouraged, especially in larger quantities.
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Calorie-dense food versus normal calorie use
ResearchediPositive results in clinical studies, not yet standard treatment
This is about the question of whether someone with HIV needs more or fewer calories than others.
Research (2026) shows that certain antiretroviral medicines (especially certain combinations) can lead to weight gain, particularly visceral fat (belly fat), and shifts in blood fats. This is metabolic change – not always prevented by simply eating less. At the same time, malnutrition (especially in less affluent parts of the world) has serious consequences: reduced immune strength, muscle loss and lower healing capacity.
Finding the balance between sufficient energy and healthy composition of that energy is important. This is again personal work – not everyone has the same needs.
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Nutrition and breastfeeding (for mother-to-child transmission)
ResearchediPositive results in clinical studies, not yet standard treatment
This focuses on mothers with HIV who want to feed their baby. In much of the world, attention is paid to safe feeding methods to prevent HIV transmission through feeding.
Studies (2026) show that mother-to-child transmission of HIV can be greatly reduced through antiretroviral therapy and feeding choices. Nutrition here is not so much a diet type, but rather a decision: one can choose between breastfeeding under protection of medication, formula feeding, or mixed feeding. This is always determined in consultation with the healthcare provider, based on local circumstances, water safety and other factors.
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Intermittent fasting or periodic fasting
ExperimentaliOngoing in study setting, outcome still unknown
Intermittent fasting – where you only eat during certain hours, or don't eat on certain days – is receiving attention for various conditions, but has been little researched for HIV.
Theoretically, fasting periods could affect metabolic health and inflammation. However, there is no targeted scientific evidence for HIV patients. Because fasting can also have risks – for example, medicines that work poorly on an empty stomach, or energy deficiency – this warrants caution. This is something to discuss first with your healthcare provider.
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Nutrition aimed at cardiovascular health
ResearchediPositive results in clinical studies, not yet standard treatment
Because people with HIV have increased risks of heart and vascular disease (from the virus itself, from inflammation, and sometimes from medicines), attention is being paid to nutrition that protects the heart.
This includes less salt, healthy fats (especially from fish and nuts), sufficient potassium and magnesium, and plenty of vegetables. A 2026 study on cardiovascular interventions in HIV showed that lifestyle changes, including nutrition, help reduce risk.
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Finally
Dietary choices in HIV are always tailored. They depend on your medication, your phase of treatment, your local food supply, your own health (weight, cholesterol, other illnesses) and your preferences. A specialized dietitian can help adapt nutrition so that your body can work optimally, without worsening side effects of medication.
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_This information never replaces the judgment of a doctor. Always discuss your nutrition choices with your own healthcare provider or a dietitian._