Carrots

Vitamin A: Carrots are rich in beta-carotene, which is converted to vitamin A in the body. Vitamin A promotes good vision, and is important for growth, development, and immune function (15 Trusted Source).
Biotin: One of the B-vitamins, formerly known as vitamin H. It plays an important role in fat and protein metabolism (16)
Vitamin K1: Also known as phylloquinone, vitamin K is important for blood coagulation and can promote bone health (17 Trusted Source, 18).
Potassium: An essential mineral, important for blood pressure control.
Vitamin B6: A group of related vitamins that are involved with the conversion of food into energy.

1.   Reduced Risk of Cancer
Diets rich in carotenes may have a protective effect against several types of cancer.

This includes prostate cancer (27 Trusted Source), colon cancer (28 Trusted Source) and stomach cancer (29 Trusted Source).

Women with high circulating levels of carotenoids may also be at reduced risk of breast cancer (30 Trusted Source).

Older research suggested that carotenoids could be protective against developing lung cancer, but newer studies found no protective effect (31 Trusted Source, 32 Trusted Source).

2.  Lower Blood Cholesterol
High blood cholesterol is a well-known risk factor for heart disease.

Intake of carrots has been linked to lower cholesterol levels (12 Trusted Source, 13).

3.  Weight Loss
Carrots, as parts of meals, can increase satiety and decrease calorie intake in subsequent meals (33 Trusted Source).

For this reason, carrots may be a useful addition to an effective weight loss diet.

4.  Eye Health
Individuals that are low in vitamin A are more likely to experience night blindness, a condition that may improve by eating carrots or other foods rich in vitamin A or carotenoids (34 Trusted Source).

Carotenoids may also cut the risk of age-related macular degeneration (35 Trusted Source, 36 Trusted Source, 37 Trusted Source).

Summery:
Carrot consumption has been linked with reduced risk of cancer and heart disease, and improved eye health. They may be a valuable component of an effective weight loss diet.

Organic vs. Conventionally Grown Carrots
Organic farming uses natural methods for growing the crop.

Several studies have compared the nutrient content in organic and non-organic carrots.

These studies did not find any difference in the amount of carotenoids, or antioxidant content and quality.

Summery:
There is no evidence that organic carrots are healthier or more nutritious than conventionally grown carrots.
Baby Carrots
Baby carrots are a term for small and/or immature carrots, which have become very popular as a snack food in recent years.

There are actually two kinds of carrots that are called baby carrots, which can be a little misleading.

One one hand, there are whole carrots that are naturally small, or carrots that are harvested before they grow large.

On the other hand, there are baby-cut carrots. These are pieces from larger carrots that have been machine cut into the preferred size, then peeled, polished and sometimes washed in small amounts of chlorine before packing.

There is very little difference in nutrients between regular and baby carrots, and they should have the same health effects.

Baby carrots are small and immature carrots, harvested before they grow large. Baby-cut carrots are pieces from larger carrots that have been machine cut, peeled, polished and washed before packing.

Individual Concerns
Carrots are generally considered safe to eat, but may have adverse effects in some people.

Eating too much carotene can cause the skin to become a little yellow or orange, which is harmless.

Allergy
According to one study, carrots can cause pollen-related allergic reactions in up to 25% of food-allergic individuals (44Trusted Source).

Carrot allergy is an example of cross-reactivity where proteins in certain fruit or vegetables cause an allergic reaction because of their similarity to the allergy-causing proteins found in certain pollens.

If you are sensitive to birch pollen or mugwort pollen, then you might react to carrots.

This can cause the mouth to tingle or itch, but in some people it may cause swelling of the throat or a severe allergic shock (anaphylaxis) (44Trusted Source, 45 Trusted Source, 46 Trusted Source).

Contamination
Carrots grown in contaminated soil or with contaminated water contain larger amounts of heavy metals, which can affect their safety and quality (43 Trusted Source).

Summery:
Carrots may cause allergic reactions in some people who are allergic to pollens. Carrots grown in contaminated soils may contain higher amounts of heavy metals, affecting their safety and quality.