This is the diet of people who live more than 100 years

Deborah Sekely (102 years old) eats a plant-based diet

Even at the age of 102, Deborah Sekely helps run her fitness resort and spa three times a week. She has always avoided meat in her life and followed a plant-based diet. She says she is a pescetarian, meaning she eats fish and vegetables, but no meat.

Their diet is something like this:

• Breakfast: Yogurt, banana and whole grains
• lunchSalad at home or light meal at a restaurant
• dinner: Fish, salad and baked potato

Their diet is quite similar to the Mediterranean diet, consisting mainly of fruits, vegetables, and whole grains.

Shirley Hodes (106 years old) has a simple and balanced diet

Shirley Hodes spoke to CNBC Make It last March, when she was 106. She said she tries to limit animal fats in her diet and only drinks skimmed milk.

She took a nutrition course from the Red Cross during World War II and has been eating a balanced and simple diet ever since. The amount of sweets in her diet is also very low.

Daisy McFadden (99 years old) Healthy Diet

In a conversation with Forbes, 99-year-old Daisy McFadden revealed her diet. According to her, her daily meals are as follows:

• Breakfast: Oatmeal, cranberry juice and banana
• lunch: Salads containing beets, cucumbers, tomatoes, and chicken or fish
• dinner: Low-fat meat and steamed vegetables
• Desert: fresh fruit

Daisy says she never drinks soda, but instead drinks water, juice, milk or iced tea.

The lifestyle of these four elders teaches us that a balanced and nutritious diet, mainly consisting of vegetables, fruits and fish, is essential for longevity and good health. Also, staying away from smoking and alcohol can also be important for a healthy life. If we pay attention to our diet and adopt a healthy lifestyle, we too can live a long and healthy life.