Foods to Avoid for Hair Growth: 5 to Limit

Liver, raw egg whites and high-mercury fish are three foods to be cautious about for hair growth, although avoiding them is not a proven way to make hair grow.

Which foods best support hair growth?

A varied diet with enough energy and protein, plus sources of iron, zinc and other essential nutrients, supports normal hair growth. Eggs, beans, lentils, lean meats, lower-mercury fish, whole grains, fruits and vegetables can all contribute to a balanced diet; no single food guarantees thicker hair.

Hair loss has many possible causes, and food is only one part of the picture. A review of vitamins and minerals in hair loss found that micronutrients play a role in hair follicles, but their precise relationship with hair loss is not always clear.

For a related look at hydration and nutrition, see the best drinks for hair growth.

Which 5 foods should you limit or use with care for hair growth?

If you are concerned about shedding or other symptoms, the ai symptom analyzer may help you organize what to discuss with a clinician; it cannot diagnose the cause.

The first four items have specific nutrient or safety considerations. The fifth is mainly a question of overall diet quality. None needs to be blamed for hair loss without considering the rest of your diet and health.

1. Liver and liver products

Why use care: Liver is rich in preformed vitamin A. Getting too much vitamin A over time can contribute to hair loss; supplements are another potential source of excess.

How much: There is no established liver serving limit specifically for hair growth. If you eat liver, avoid making large portions a frequent habit, and consider your intake alongside any vitamin A supplements. During pregnancy, avoid liver and liver products because their vitamin A content can be high.

Evidence: The vitamin and mineral review above discusses excess vitamin A and hair loss. It does not establish that an occasional serving of liver causes shedding or that avoiding liver will make hair grow faster.

2. Raw egg whites

Why use care: Raw egg whites contain avidin, a protein that binds biotin and reduces its absorption. Eating raw egg whites regularly over a long period can contribute to biotin deficiency, which can affect hair. Raw eggs also carry a food-safety risk.

How much: Avoid consuming raw egg whites as a routine food or adding them uncooked to recipes. Cook egg whites thoroughly; cooking reduces avidin’s ability to bind biotin. There is no need to avoid cooked eggs for hair growth if you tolerate them.

Evidence: The biotin mechanism is established, but this is not evidence that most people with hair loss need biotin supplements. The concern is prolonged, repeated consumption of raw egg whites, not a claim that one exposure will cause hair loss.

3. High-mercury fish

Why use care: Large predatory fish, including shark and swordfish, can contain high levels of mercury. Excess mercury exposure is harmful to health, particularly to the developing nervous system. This is primarily a general safety concern, not proof that a typical serving causes hair loss.

How much: Choose lower-mercury fish, such as salmon, sardines or trout, more often rather than relying on high-mercury varieties. People who are pregnant or may become pregnant should avoid shark and swordfish and ask a healthcare professional about suitable fish choices.

Evidence: The reason for limiting these fish is mercury exposure; strong evidence that avoiding them improves hair growth is lacking. Fish can provide protein and other nutrients, so avoiding all fish is not necessary for this purpose.

4. Large amounts of Brazil nuts

Why use care: Brazil nuts can be very high in selenium, and their selenium content varies. Selenium is essential, but too much over time can cause hair loss and other health problems. Supplements containing selenium can add to the total.

How much: Avoid eating large quantities of Brazil nuts regularly or combining frequent servings with high-dose selenium supplements. Because the selenium content varies, there is no reliable hair-growth serving size based on nut count alone. Other nuts and seeds can provide variety.

Evidence: Excess selenium is a recognized cause of hair loss, and the vitamin and mineral review discusses selenium in relation to hair. That does not mean an occasional Brazil nut is proven to cause hair loss, or that everyone needs to eliminate them.

5. Candy and sweet baked goods in place of meals

Why use care: Candy and pastries do not directly stop hair growth. The concern is that, if they regularly replace balanced meals, a person may have less opportunity to get enough protein, iron and other nutrients needed for normal hair growth.

How much: There is no proven hair-specific cutoff for these foods. Enjoying them occasionally can fit into a balanced diet; if they often stand in for meals, try adding or choosing foods with protein and other nutrients, such as yogurt, eggs, beans or a meal containing whole grains and vegetables.

Evidence: Evidence that eating these foods causes hair loss is limited. Replacing them with nutrient-containing foods may improve overall diet quality, but it has not been shown to guarantee hair regrowth.

What other eating habits should you limit?

Avoid crash diets and highly restrictive eating patterns, particularly when they leave you consistently short of energy or protein. Rather than removing multiple foods to chase hair growth, build regular meals around a variety of foods you can eat and tolerate. If weight loss or a restricted diet is followed by increased shedding, discuss it with a clinician or registered dietitian.

Be cautious with supplements marketed for hair growth. More is not always better: excess vitamin A or selenium can contribute to hair loss, and biotin supplements can interfere with some laboratory tests. Tell your healthcare professional about supplements you take, and ask whether testing is appropriate before starting a high-dose product.

A systematic review of nutritional interventions for hair loss found no diet-based intervention studies that met its inclusion criteria for people with hair loss and no known baseline nutritional deficiency. Some supplements showed potential benefit, but that does not establish that a particular eating plan prevents or treats hair loss.

Who should get medical advice about hair loss?

See a healthcare professional if hair loss is sudden, patchy, persistent or accompanied by scalp pain, significant scaling or signs of scarring. Also seek advice if shedding occurs alongside symptoms such as unusual fatigue, or if you have heavy menstrual bleeding. A clinician can assess possible causes and decide whether tests are useful.

People who are pregnant, children and anyone with a medical condition, restricted diet or suspected nutrient deficiency should get individualized advice before making major dietary changes. If you take medication and think it may be related to hair loss, discuss it with the prescriber rather than stopping it yourself. A registered dietitian can help plan a balanced diet when food choices are limited.