Lemon

Lemon is a citrus fruit that is rich in nutrients and has many health benefits. It has high percentage of vitamin C

High in vitamin C: Lemons are a rich source of vitamin C, which is essential for maintaining a healthy immune system. Vitamin C is also an antioxidant that can help to protect cells from damage caused by free radicals.
Digestive health: Lemon juice has a high concentration of citric acid, which can help to stimulate digestive enzymes and improve digestion. It can also help to relieve symptoms of indigestion and constipation.
Skin health: The vitamin C in lemons can help to promote the production of collagen, which is important for maintaining healthy skin. Lemon juice can also be used as a natural remedy for acne and other skin blemishes.
Weight loss: Lemon water is a popular drink for weight loss as it can help to promote feelings of fullness and reduce calorie intake.
Flavoring: Lemon juice is a popular flavoring for food and drinks. It can be used in salads, marinades, dressings, and cocktails to add a refreshing, citrusy flavor.
Cleaning: Lemon juice can be used as a natural cleaner for surfaces, such as countertops and cutting boards. Its acidity can help to break down stains and grease.

Lemons contain very little fat and protein. They consist mainly of carbs (10%) and water (88–89%).

The nutrients in 1/2 cup (100 grams) of raw, peeled lemon are :

Tooth erosion: The high acidity of lemon juice can erode tooth enamel over time, which can lead to tooth sensitivity and decay.
Skin irritation: Lemon juice can cause skin irritation and sensitivity in some people, especially if applied directly to the skin without dilution.
Acid reflux: Lemon juice can trigger acid reflux in some people, especially if consumed in large quantities.
Stomach upset: Lemon juice can cause stomach upset and diarrhea in some people, especially if consumed in large quantities.
Allergic reactions: Some people may be allergic to lemons and may experience symptoms such as itching, swelling, and hives.