Brenda Khan
Tryptophan is an essential amino acid that is used by the body to make proteins, enzymes, and neurotransmitters. It is a precursor to serotonin, a hormone that helps regulate mood, sleep patterns, and appetite. As tryptophan is not produced by the body, it must be consumed through diet or supplements. High-tryptophan foods include chicken, turkey, red meat, pork, tofu, fish, beans, milk, nuts, seeds, oatmeal, and eggs. Tryptophan-rich diets are associated with lower levels of depression and improved social cognition. However, it is important to note that tryptophan competes with other amino acids to enter the brain, and consuming a high-carb, low-protein meal can increase tryptophan levels in the brain.
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What You'll Learn
Eat a high-carb, low-protein meal
Eating a high-carb, low-protein meal is one way to increase the levels of tryptophan in your diet. Tryptophan is an essential amino acid that is a precursor to serotonin, a neurotransmitter that helps regulate mood, sleep patterns, and appetite. Serotonin is also important for gut health.
When you eat a meal high in carbohydrates, your body experiences an insulin spike, which leads to the absorption of large neutral amino acids (LNAAs) by muscle cells. Tryptophan is also an LNAA, but unlike other LNAAs, it is not absorbed by muscle cells. Therefore, a high-carb, low-protein meal increases the ratio of tryptophan to other LNAAs in your plasma, reducing the competition for the LNAA transporter, and allowing more tryptophan to enter your brain through the blood-brain barrier (BBB).
To increase tryptophan in your diet through this method, you should consume a meal that is rich in carbohydrates and poor in protein. Some sources suggest that a high-protein meal eaten earlier in the day can help transport tryptophan into the brain when consumed with a high-carb, low-protein meal later. However, it is important to note that high-sugar and high-fat diets are still detrimental to mental health and mood for several reasons.
Some foods that are high in carbohydrates and low in protein include low-fat graham crackers, pretzels, potatoes, and bread. It is important to note that only small amounts of tryptophan are necessary for healthy nutrition in most people. The recommended daily intake for most adults is 4-5 milligrams per kilogram of body weight, which is about 280-350 milligrams per day for a 70-kilogram adult.
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Consume tryptophan supplements
Tryptophan is an amino acid that is vital for several bodily functions, including mood, thinking, and behaviour. It is the sole precursor to serotonin, a neurotransmitter that helps regulate mood, sleep patterns, and appetite. While tryptophan can be obtained from a healthy, balanced diet, some people may opt to take it in supplement form.
L-tryptophan is the form of tryptophan that the body uses to make proteins. It occurs naturally in many foods, including meats such as turkey and chicken, as well as in supplement form. The supplement has been used to aid sleep and improve mood, and some women take it to ease mood swings due to premenstrual syndrome (PMS) or premenstrual dysphoric disorder (PMDD).
The typical dose for L-tryptophan supplements is 60 mg taken orally once daily for 16 weeks. However, it is important to consult a healthcare provider to determine the appropriate dose for your specific needs. L-tryptophan supplements should be used with caution, as they can cause side effects such as drowsiness, stomach pain, vomiting, diarrhoea, headache, and blurry vision.
It is important to note that L-tryptophan supplementation has been linked to a potentially serious condition called eosinophilia-myalgia syndrome (EMS), which can be fatal. While the cases of EMS in the late 1980s were attributed to contamination, there is still a risk of contamination in L-tryptophan supplements today. Therefore, it is crucial to speak with a doctor before taking any supplements, especially if you are pregnant or have liver problems.
In summary, consuming tryptophan supplements can help increase tryptophan levels in the body, which may have beneficial effects on mood, sleep, and other aspects of health. However, it is important to use these supplements with caution and under the guidance of a healthcare professional to ensure safe and effective use.
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Eat foods high in tryptophan
Tryptophan is an essential amino acid that plays a role in the production of serotonin, melatonin, niacin, and nicotinamide. It is found in both plant and animal proteins, although animal proteins tend to have more and are easier for the body to break down and use.
Meat and Poultry
Meat and poultry are good sources of tryptophan. Chicken, turkey, and red meat are high in tryptophan content.
Fish
Fish is another animal-based source of tryptophan. Canned tuna and tofu are also good options.
Dairy
Dairy products like milk and cheese are rich in tryptophan. Tryptophan was first discovered in casein, a protein found in milk.
Nuts and Seeds
Nuts and seeds are plant-based sources of tryptophan. Peanuts, as well as other nuts, can help boost tryptophan intake.
Grains
Oats and oatmeal are good sources of tryptophan. They also provide complex carbohydrates, which can aid in tryptophan absorption.
Eggs
Eggs are another animal-based source of tryptophan and can be incorporated into various dishes.
Fruits
Some fruits, like bananas and apples, also contain tryptophan.
It is important to note that while tryptophan supplements are available, they have been linked to side effects and safety concerns in the past. It may be safer to obtain tryptophan through these natural food sources or by consuming a high-carb, low-protein meal to increase tryptophan absorption.
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Improve your gut health
Tryptophan is an essential amino acid that is used by the body to make proteins. It is one of nine essential amino acids that cannot be made by the body and must be obtained from food. It is the sole precursor to serotonin, a key neurotransmitter that plays a role in regulating mood, sleep patterns, and appetite.
The gut-brain axis (GBA) is a communication network between the gastrointestinal (GI) tract and the central nervous system. Tryptophan contributes to the normal growth and health of both animals and humans and modulates functions at multiple levels of the GBA. Disturbances in the gut microbiota have been linked to functional disorders of the GBA, such as irritable bowel syndrome (IBS) and neuropsychiatric disorders.
To increase tryptophan in your diet and improve your gut health, consider the following:
- Eat a high-carb, low-protein meal: Eating a carbohydrate-rich and protein-poor meal can increase the ratio of tryptophan to other large neutral amino acids (LNAAs) in the plasma, favouring the entry of tryptophan into the brain.
- Include tryptophan-rich foods: Poultry, canned tuna, oats, bananas, turkey, chicken, milk, peanuts, and apples are examples of foods with higher tryptophan content.
- Avoid inflammatory diets: Diets high in processed and refined foods, inflammatory fats, sugar, empty calories, and salt can increase inflammation and divert tryptophan away from serotonin production.
- Consider tryptophan supplements: Tryptophan supplements have been shown to improve cognitive function and mood in some studies. However, it is important to consult a doctor before taking any supplements.
- Maintain a healthy gut microbiota: Accumulating evidence suggests that the composition of gut microbiota can affect tryptophan metabolism and overall gut health. Probiotics may be beneficial, but more research is needed.
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Eat lean protein
Eating lean protein is an effective way to increase tryptophan in your diet. Tryptophan is an essential amino acid that cannot be produced by the body and must be obtained from food. It is a precursor to serotonin, a neurotransmitter that regulates mood, sleep patterns, and appetite.
Animal-based proteins, such as meat, poultry, fish, eggs, cheese, and yogurt, are complete proteins that contain all nine essential amino acids, including tryptophan. If you are consuming animal-based proteins, opt for leaner options such as chicken breast, turkey breast, and fish like tuna. These are excellent sources of tryptophan and provide your body with the essential amino acids it needs to function optimally.
Some plant-based proteins like quinoa, soy, and buckwheat are also complete proteins that contain tryptophan. If you are following a plant-based diet, incorporate these foods into your meals to ensure you're getting enough tryptophan. For example, soy products like tofu and tempeh are excellent sources of lean plant-based protein.
It is important to note that while increasing your tryptophan intake through lean protein sources is beneficial, excessive consumption of protein can reduce tryptophan's entry into the brain. This is because other amino acids in protein compete with tryptophan for absorption. Therefore, it is recommended to consume a balanced diet that includes a variety of lean protein sources and a good balance of carbohydrates and healthy fats.
Additionally, when consuming tryptophan-rich foods, consider pairing them with a high-carbohydrate, low-protein meal. This combination can help increase the ratio of tryptophan to other amino acids in the blood, favouring its absorption into the brain. This is because carbohydrates stimulate insulin release, which promotes the absorption of amino acids into muscle cells, except for tryptophan, effectively reducing competition for absorption.
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Frequently asked questions
Tryptophan is an essential amino acid that helps the body make proteins, muscles, enzymes, and neurotransmitters. It is also a precursor to serotonin and melatonin, which are important for mood, sleep, and appetite.
A tryptophan-rich diet is associated with lower levels of depression and better social cognition. It also helps with general growth and development and producing niacin (vitamin B3).
High tryptophan foods include chicken, turkey, red meat, pork, tofu, fish, beans, milk, nuts, seeds, oatmeal, and eggs.
The reference dietary intake (RDI) for tryptophan is 4mg per kilogram of body weight or 1.8mg per pound. For a 70kg (154-pound) adult, that's about 280-350mg per day.
Yes, tryptophan supplements are available. However, the FDA banned all tryptophan supplements in 1989 due to an outbreak of a potentially fatal disorder called eosinophilic myalgia syndrome (EMS). Although they are back on the market, it is still possible for them to be contaminated. Speak to your doctor before taking any supplements.
