Which Foods and Diets Can Boost NAD+ Naturally?

NAD+ is a naturally occurring coenzyme involved in cellular energy, metabolism and many processes linked to healthy ageing, but the relationship between food and NAD+ is more nuanced than many online "NAD+ foods" lists suggest. This article looks at which foods can provide the nutrients the body uses to make and recycle NAD+, whether an NAD+ diet can offer meaningful natural NAD+ support and how dietary patterns, meal timing and exercise fit into the picture. 

The insights provided in this article are from Yusra Serdaroglu Aydin MSc RD, Vivere's Head of Nutrition with a background in nutrition, food engineering and culinary arts. Her approach is grounded in science and shaped by a strong understanding of personalised nutrition and the human microbiome, helping distinguish useful nutrition advice from marketing claims and focus on a diet that works in a real UK kitchen, where nutrition meets cell biology and peer-reviewed research alongside practical guidance such as that provided by the NHS.

A varied diet containing reliable sources of vitamin B3 (niacin) and tryptophan, combined with a healthy dietary pattern, regular exercise and sensible lifestyle habits, can support the body's natural NAD+ metabolism without requiring an exotic "NAD+ food".

• Can you get NAD+ directly from food? Dietary NAD+ is largely broken down during digestion rather than absorbed intact in meaningful amounts, so the body relies on nutrients and precursors such as niacin, nicotinamide and tryptophan to make NAD+.

• Which foods are best for NAD+? Fish, poultry, beef, eggs, wholegrains, peanuts, yeast extract such as Marmite, pulses and vegetables can provide nutrients involved in NAD+ production.

• Do "NMN foods" like broccoli and avocado boost NAD+? Broccoli and avocado contain useful nutrients and small amounts of compounds associated with NAD+ metabolism, but they should not be treated as natural alternatives to concentrated NMN or other supplements.

• Does the way I eat matter, not just what I eat? A Mediterranean-style pattern rich in plants, protein, wholegrains, pulses, nuts and healthy fats provides a broader nutritional foundation than focusing on one supposed NAD+ food.

• What else supports NAD+ metabolism? Regular exercise, good sleep, sensible alcohol intake and overall metabolic health may complement dietary support, while precursor supplements are better considered as a secondary option rather than the starting point.

Food supports NAD+ production by supplying the raw materials that the body uses to make and recycle this important coenzyme rather than by providing large quantities of intact NAD+.

NAD+, short for nicotinamide adenine dinucleotide, is involved in numerous cellular processes. It helps cells transfer energy during metabolism and supports reactions associated with the mitochondria and ATP production. NAD+ is also used by enzymes including sirtuins, PARPs and CD38, meaning that it is continually being consumed and recycled within cells.

The body has several routes for maintaining its NAD+ supply. One important route is the salvage pathway, which recycles forms of vitamin B3, including nicotinamide back into NAD+. Another is the de novo pathway, which can produce NAD+ from tryptophan. These pathways mean that eating foods containing vitamin B3 and tryptophan can contribute to the raw materials required for NAD+ metabolism [1].

The body can also convert tryptophan into niacin before using it to contribute to NAD+ production. This conversion involves several nutrients, including iron, vitamin B6 and riboflavin [2].

This is why claims about simply eating a food containing NAD+ need careful interpretation. Whole NAD+ from food is not absorbed intact. Digestion breaks larger molecules down and the body then processes their components.

NAD+ is discussed in relation to age-related tissue decline and claims that levels "halve by 50". However, this should not be treated as an established universal rule for humans. A 2026 human study examining whole-blood NAD+ reported that blood NAD+ was stable across age and lifestyle groups, illustrating why simple claims about an inevitable age-related collapse in circulating NAD+ need to be treated cautiously [3].

"You do not need an exotic NAD+ food to support NAD+ metabolism. A reliable intake of vitamin B3 and tryptophan from a varied British diet gives the body important nutritional building blocks while also supporting wider nutritional needs."

The practical message is therefore straightforward. Rather than searching for a single food, it makes more sense to build meals around a varied combination of protein-rich foods, wholegrains, pulses, vegetables and other nutrient-dense ingredients.

The best foods for supporting NAD+ metabolism are those that provide vitamin B3, tryptophan and the wider range of nutrients needed for normal energy metabolism.

The NHS explains that niacin contributes to normal energy release and can be found in a range of foods including meat, fish and wholegrains [4]. The NIH also provides detailed information about dietary sources of niacin and recommended intakes [5].

Food does not need to be labelled as an "NAD+ food" to be useful. The salvage and de novo pathways mean that ordinary foods can provide nutrients that the body uses as part of its NAD+ metabolism.

Niacin sources include meat, poultry, oily fish, peanuts, wholegrains, mushrooms and yeast extract, including Marmite and nutritional yeast.

Meat and poultry can provide concentrated B vitamins alongside protein. Fish, including oily fish, can also contribute niacin while providing other nutrients such as omega-3 fatty acids. Peanuts and wholegrains can be useful plant-based sources, while mushrooms and yeast extract can add variety.

Marmite and other yeast extracts are particularly notable because they can contain concentrated B vitamins. However, serving sizes are generally small, so they should be viewed as one contribution to the overall diet rather than a stand-alone strategy.

A varied intake is more useful than trying to maximise one food. Concentrated B vitamins can be present in certain foods, but nutrition involves far more than one nutrient.

Tryptophan sources are predominantly protein-rich foods such as turkey, chicken, eggs, dairy products, fish, tofu and seeds.

Tryptophan is an essential amino acid, meaning it needs to come from the diet. In addition to its role as a building block for proteins, some tryptophan can enter the de novo pathway and contribute to niacin and NAD+ production.

For this reason, adequate protein intake can form part of a sensible approach to supporting NAD+ metabolism. This does not mean that eating large quantities of tryptophan will automatically produce proportionally more NAD+, as the body's metabolism is regulated and tryptophan has several biological roles.

Foods sometimes described online as "NMN foods" or "NR foods" should not be confused with concentrated precursor supplements because normal dietary quantities are unlikely to provide supplement-like amounts of these compounds.

NMN stands for nicotinamide mononucleotide and NR stands for nicotinamide riboside. Both are associated with NAD+ metabolism and have been studied as NAD+ precursors. However, the body's handling of NAD+ and its precursors involves dedicated metabolic pathways rather than simply absorbing large quantities of intact NAD+ from ordinary food.

Broccoli, avocado and milk are sometimes promoted online as NMN or NR foods. These are nutritious foods, but the presence of small amounts of a compound does not make them equivalent to a concentrated supplement. The quantities available through normal eating are not comparable with the doses used in supplementation research.

Research has also investigated plant compounds such as apigenin and quercetin in relation to CD38 and NAD+ metabolism. Some experimental findings involve laboratory systems or pharmacological doses and should not be interpreted as evidence that eating particular foods will produce the same effect in humans [6].

Broccoli and avocado therefore remain excellent foods to include in a varied diet, but they are not dietary shortcuts to dramatically increasing NAD+.

A whole dietary pattern such as the Mediterranean diet may support the wider metabolic environment in which NAD+-dependent processes take place, while also benefiting cardiovascular and metabolic health.

The Mediterranean diet is characterised by vegetables, fruit, wholegrains, pulses, nuts, olive oil, fish and other minimally processed foods. It is a dietary pattern rather than a list of individual "superfoods".

The PREDIMED trial found that Mediterranean dietary patterns supplemented with extra-virgin olive oil or nuts reduced major cardiovascular events compared with the control diet in the studied population [7]. This provides an important example of why looking at the overall pattern can be more meaningful than focusing on one nutrient.

Plant diversity is also relevant to the gut microbiome. The American Gut study found that people consuming more than 30 different plant types each week tended to have more diverse gut microbiomes than those consuming 10 or fewer [8].

This does not prove that eating 30 plants a week directly increases NAD+. It does, however, illustrate the potential value of dietary variety. Vegetables, fruit, wholegrains, pulses, nuts, seeds and herbs provide different fibres and polyphenols that interact with the gut microbiome and contribute to a broad nutritional profile.

"I would encourage people to think about the pattern rather than becoming fixed on finding one 'NAD+ food'. A colourful plant-based plate, good protein and a varied diet are much more sustainable foundations for healthy ageing than chasing a single ingredient."

A Mediterranean-style dietary pattern can therefore provide a practical framework for supporting heart and metabolic health while supplying nutrients involved in NAD+-dependent metabolism. The potential benefits come from the overall pattern and its sustainability rather than from a special NAD+ effect attributed to one ingredient.

There is no single food that can accurately be described as an "NAD+ draining food", although dietary and lifestyle patterns associated with poor metabolic health may contribute to an environment in which inflammation and NAD+ breakdown become more relevant.

Research has investigated the relationship between CD38, inflammation and age-related NAD+ decline. In animal research, CD38 expression and activity increased with age and contributed to NAD+ decline [9]. Further research has examined how inflammatory signalling associated with senescent cells can activate CD38 and lower tissue NAD+ with age [10].

These findings are important but should not be converted into simplistic food lists. There is no evidence that eating one particular food suddenly "drains" NAD+.

Instead, it is more useful to consider the broader dietary context. A diet consistently high in ultra-processed foods, refined sugar and excess alcohol can make it harder to maintain good metabolic health when these foods displace nutrient-rich alternatives or contribute to excessive energy intake.

An anti-inflammatory dietary pattern based around wholefoods, vegetables, wholegrains, pulses, nuts, fish and other minimally processed foods may support overall metabolic and cardiovascular health.

Alcohol is another area where moderation matters. Rather than labelling individual foods as harmful to NAD+, it is more appropriate to consider how dietary habits can influence inflammation, metabolic health and the processes involved in NAD+ turnover.

The relationship between age, inflammation, CD38 and NAD+ metabolism is biologically interesting, but it does not justify fear-based lists of foods that supposedly "drain" NAD+.

Meal timing, intermittent fasting and caloric restriction may influence energy-sensing pathways, but there is currently limited human evidence showing that changing meal timing acts as a direct or proven NAD+ switch.

NAD+ metabolism interacts with cellular energy-sensing systems and enzymes such as sirtuins. This has generated considerable interest in fasting and calorie restriction, particularly because animal studies have reported changes in NAD+ metabolism under different nutritional conditions.

Human evidence is more cautious. A 2025 review of time-restricted eating found potential benefits for weight and some metabolic markers, although results were inconsistent across studies [11].

The CALERIE trial also found that two years of moderate calorie restriction improved several cardiometabolic risk markers in healthy adults [12]. These findings are relevant to metabolic health, but they do not establish caloric restriction as a direct method for raising NAD+ in humans.

This distinction matters. Fasting may be useful for some people in certain circumstances, but it should not be promoted as a guaranteed way to increase NAD+.

For most people, diet quality, adequate nutrition and sustainable habits are more important than pursuing increasingly restrictive eating windows.

Fasting can be inappropriate for some people, particularly those who are pregnant or breastfeeding, under 18, have a history of disordered eating or take glucose-lowering medication.

People with diabetes should discuss fasting with an appropriate healthcare professional because changes in food intake can affect blood glucose and medication requirements.

If you are considering intermittent fasting and have an existing health condition, take regular medication or have concerns about your nutritional intake, speak to your GP or a registered dietitian before changing your eating pattern.

Exercise is one of the most relevant lifestyle factors beyond diet because research suggests physical activity can influence the body's NAD+ salvage machinery and is associated with muscle NAD+ metabolism.

Research has shown that training can increase NAMPT, an enzyme involved in recycling NAD+ in muscle [13]. NAMPT is an important component of the NAD+ salvage pathway and helps cells recycle nicotinamide to maintain NAD+ availability.

Human research has also found associations between higher muscle NAD+, physical activity and better muscle function in older adults [14]. These findings support the idea that movement can complement a sound dietary foundation.

Exercise should not be viewed as an NAD+ treatment. It is better understood as one component of a wider healthy lifestyle that supports cardiovascular fitness, muscle function, metabolic health and healthy ageing.

Sleep and moderating alcohol intake can also contribute to broader metabolic health. Together with a nutrient-rich diet, regular physical activity and adequate recovery create a more complete approach than focusing exclusively on NAD+.

Vivere's companion guide on how to boost NAD+ levels naturally can be considered alongside this dietary approach, particularly for people interested in how nutrition and lifestyle interact with cellular health.

NAD+ supplements are a complementary option for people interested in targeted support, but diet and lifestyle provide the broader foundation for nutritional health.

Research has investigated precursors such as nicotinamide riboside rather than relying on oral NAD+ itself. One randomised trial found that nicotinamide riboside increased whole-blood NAD+ in a dose-dependent manner, with an increase of approximately 140% reported at the highest dose studied [15].

This is different from saying that supplementation produces a proven health benefit for everyone. Raising a biomarker and producing a meaningful improvement in health are not the same thing.

NAD+ itself is also not simply absorbed intact from food or oral products and used directly throughout the body. Precursors are studied because they can enter the body's existing metabolic pathways and contribute to NAD+ production.

In Great Britain, the regulatory position of NAD+ precursors needs to be considered separately from the scientific research surrounding them.

The Food Standards Agency's novel food guidance and register provide the relevant regulatory information for food ingredients and supplements, including the status of substances such as nicotinamide riboside and NMN [16].

Nicotinamide riboside has an authorised novel food status under specified conditions in Great Britain. This does not mean that all claimed health benefits have been established. NR has been shown in research to raise NAD+ levels, while evidence for broader health outcomes remains limited.

NMN is subject to a different regulatory position and should not simply be assumed to have the same status as NR.

For anyone considering an NAD+ precursor or injectable NAD+ product, professional advice from a pharmacist, prescriber or GP is appropriate.

A NAD+-supportive day can be built from ordinary meals containing protein, B vitamins, vegetables, wholegrains, pulses and other minimally processed foods.

There is no need for a special "NAD+ diet". A typical day could include eggs and wholegrain toast with vegetables at breakfast, a chicken or tofu salad with wholegrains and pulses at lunch and salmon or another fish with vegetables and wholegrains at dinner.

Snacks could include yoghurt, fruit, a small handful of peanuts or seeds. For plant-based diets, tofu, pulses, mushrooms, wholegrains, nuts and fortified foods can contribute protein, niacin and tryptophan.

The aim is not to create a rigid menu. Instead, the NAD+-supportive day illustrates how protein and B vitamins can be spread across meals while vegetables and other plant foods provide variety.

Keeping ultra-processed foods moderate can also help make space for more nutrient-dense everyday foods. The overall dietary pattern matters more than trying to optimise every individual meal for NAD+.

A simple approach is to include a palm-sized protein portion at each main meal and aim for a spread of different colours and plant foods across the week.

This can help provide B3 and tryptophan while also supporting adequate protein intake and plant variety. There is no need to count every milligram of niacin or track every plant.

For healthy ageing, consistency is more useful than perfection. A varied diet that can be maintained over months and years is likely to be more practical than an elaborate eating plan built around a handful of foods marketed as NAD+ boosters.

There is no single best food to increase NAD+, so a varied intake of niacin-rich and protein-rich foods is more useful than relying on one ingredient.

Chicken, turkey, oily fish, beef, peanuts, wholegrains and yeast extract can all contribute nutrients involved in NAD+ metabolism. Eggs and other protein-rich foods can provide tryptophan, while mushrooms and plant foods add further nutritional variety.

The practical goal is weekly variety rather than finding one food that supposedly works better than everything else.

Yes, vegetarians and vegans can obtain plant sources of niacin and tryptophan and support both NAD+ pathways through a varied plant-based diet.

Peanuts, wholegrains, pulses, tofu, seeds and mushrooms can all contribute useful nutrients. Marmite and other yeast extracts can also provide B vitamins, while fortified foods may provide additional nutrients depending on the product.

Adequate protein remains important, particularly when following a fully plant-based diet. Eating a wide range of plant foods can help provide the nutrients needed for normal metabolism without relying on animal products.

Foods provide the building blocks the body uses for NAD+ metabolism and form a reliable nutritional foundation, while precursor supplements such as nicotinamide riboside offer a more concentrated approach that has been studied for its ability to raise NAD+.

NR has been shown to raise NAD+ levels in human research, but evidence that this translates into broad health benefits remains limited. Supplements should therefore be considered an addition to a healthy diet and lifestyle rather than a replacement for them.

Exercise, adequate nutrition and other healthy habits remain important parts of the overall picture.

Coffee and green tea contain polyphenols and other bioactive compounds, but neither should currently be considered an established NAD+ booster.

Both drinks can fit comfortably into a healthy dietary pattern for many people, provided caffeine intake and individual tolerance are considered. Their potential nutritional benefits should not be confused with evidence that they directly and reliably increase NAD+.

The overall dietary pattern remains more important than choosing a particular drink for its proposed effect on one cellular pathway.

There is no reliable timescale showing that a particular food or diet will produce a predictable change in NAD+ levels, so consistent dietary habits over weeks and months are more meaningful than expecting an immediate effect.

NAD+ metabolism is dynamic and influenced by multiple biological and lifestyle factors. There is currently no well-established home test that can reliably show whether a dietary change has produced a clinically meaningful improvement in NAD+.

A varied protein-and-plant-rich diet can support normal nutrition over time while contributing to broader metabolic and healthy ageing goals.

“You cannot absorb whole NAD+ from food in a meaningful way, so the practical focus should be on supplying the nutrients involved in its production and recycling, particularly vitamin B3 (niacin) and tryptophan. Foods such as chicken, turkey, oily fish including salmon and mackerel, eggs, wholegrains, pulses, peanuts, mushrooms and Marmite can all contribute to this nutritional foundation. 

A healthy plant-based or Mediterranean-style dietary pattern, moderate intake of ultra-processed food, sensible alcohol consumption, regular exercise and good sleep provide a more sustainable approach to supporting healthy metabolism than searching for a single food. Where appropriate, a supplement can be considered as a later step, but it should complement rather than replace a strong dietary and lifestyle foundation.”

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[1] NAD+ metabolism and its roles in cellular processes during ageing | Nature Reviews Molecular Cell Biology

[2] Niacin Deficiency - StatPearls - NCBI Bookshelf

[3] Human whole-blood NAD+ levels do not vary with age or lifestyle interventions | Nature Metabolism

[4] NHS guidance on niacin and other B vitamins

[5] Niacin - Health Professional Fact Sheet

[6] Flavonoid Apigenin Is an Inhibitor of the NAD+ase CD38 | Diabetes

[7] Primary Prevention of Cardiovascular Disease with a Mediterranean Diet Supplemented with Extra-Virgin Olive Oil or Nuts | New England Journal of Medicine

[8] American Gut: an Open Platform for Citizen Science Microbiome Research | mSystems

[9] CD38 Dictates Age-Related NAD Decline and Mitochondrial Dysfunction through an SIRT3-Dependent Mechanism: Cell Metabolism

[10] Senescent cells promote tissue NAD+ decline during ageing via the activation of CD38+ macrophages | Nature Metabolism

[11] Time-Restricted Eating in Metabolic and Clinical Health: a Current Evidence and Mechanistic Insights - The Journal of Nutrition

[12] 2 years of calorie restriction and cardiometabolic risk (CALERIE): exploratory outcomes of a multicentre, phase 2, randomised controlled trial - The Lancet Diabetes & Endocrinology

[13] Aerobic and resistance exercise training reverses age-dependent decline in NAD + salvage capacity in human skeletal muscle

[14] Healthy aging and muscle function are positively associated with NAD+ abundance in humans | Nature Aging

[15] Safety and Metabolism of Long-term Administration of NIAGEN (Nicotinamide Riboside Chloride) in a Randomized, Double-Blind, Placebo-controlled Clinical Trial of Healthy Overweight Adults | Scientific Reports

[16] Novel foods authorisation guidance - GOV.UK