You are 20 – 30 years old.
It is not common to have a serious problem with weight in this age range. You can lose 3-5 pounds without trying too hard. The best way to lose extra pounds is a fruit diet. Fruits are rich in vitamin C, which will help you to stay physically active. Pectin, fruit acids and potassium burn calories and improve your metabolism and digestion. 

Here is an example of an apple diet:
Breakfast: grate 1 apple; add 1 low fat yogurt and 1 table spoon of oatmeal.
Brunch: 1 apple.
Lunch: slice 2 apples and add spinach. For sauce mix 1 low fat yogurt, 1 tea spoon of olive oil, 1 tea spoon of apple cider vinegar and 1 tea spoon of water.
Snack: 1 apple and 3 walnuts.
Dinner: slice 1 apple, squeeze lemon juice on it and eat it with 5 oz of cheese. 

You are 30-40 years old.
When you turn 30 years old, your metabolism slows down. You should lower calories in your dieting even if you are physically active. Do not try to lose weight fast. It will make you look a few years older because your skin will become loose and wrinkled. The older you become, the slower you should lose weight. Your goal at this age is to lose no more than 4-5 pounds a month. An ideal diet for you consists of vegetables because you will not have ‘hunger attacks’ and swaying in your weight. Also, you should add regular exercise, massage and skin care that improves skin elasticity.
Do not plan exercises on your dieting day.

 Here is an example of a vegetable diet:
Breakfast: mix oatmeal and corn flakes; add low fat milk and 1 grated carrot.
Brunch: 1 cucumber.
Lunch: 2 boiled potatoes (with the skin still on them) with a lot of vegetable salad (you can use any vegetables)
Snack: 1 red sweet paprika.
Dinner: vegetable salad and 1 piece of rye bread. 

You are 40-50 years old.
Almost every woman over 40 has weight problems. Your muscular mass decreases and fat increases because of hormonal changes. You should eat most of your food in the first half of the day and have very light and early dinners. You should get no more fat than 30% of your daily ration. Choose vegetable oils. Eat fish and sea food regularly.

In this age range your body starts retaining fluid. An ideal diet for you is a rice diet because it will help you to maintain a healthy fluid level in your body.

Here is an example of a rice diet:
Boil 8 oz of rice and divide it into 3 portions. 2 of them will be combined with additional protein components.
Breakfast: boiled rice with 1 low fat yogurt and 1 tea spoon of honey.
Lunch: boiled rice and 5 oz of fish or chicken.
Dinner: rice with steamed vegetables and 1 tea spoon of vegetable oil.
Do not add salt because it will lead to retaining fluid in your body. You can add soy because it will help with ‘hunger attacks’.
For snack you can eat a fruit or 3 oz of low fat cottage cheese. 

You are 50-60 years old.
If you are over 50, you need less energy (about 30%) than somebody who is 20 years old. Eat 4-5 small portions a day. Do not over eat because it is harmful to your health. Limit your daily ration of salt to ¼ tea spoon a day. Sometimes you can fast, but do not do it often because in this age range your body loses its strength to fight illnesses.

The most effective substances ‘killing’ fat are enzymes. Pineapple and papaya are very rich in enzymes and vitamin C.

Here is an example of a diet for you:
Eat during the day about 4 -5 pounds of pineapple and papaya (or choose just one), including the pulp and juice. Divide these 4-5 pounds into 3 portions: breakfast, lunch and dinner. Do not eat anything else this day. If this diet is too strict for you, try this one: 
Breakfast: 1 slice of pineapple and 3 oz of low fat cottage cheese.
Lunch: a half of pineapple and 3 oz of boiled chicken or fish or low fat meat.
Dinner: 1 slice of pineapple and 1 piece of rye bread with 1 piece of low fat cheese.

Also, powerful ‘fat-killers’ are kiwis, apple cider vinegar and artichokes (and the water left from boiling artichokes)

You are over 60 years old.
Your muscular mass in this age range is about 15% of your body. That is why if you want to lose weight, you should do it very slowly because fast diets decrease the amount of protein in your muscular mass.
The main rule is to eat no more than 40 g of fat a day.

Here are some examples:
Breakfast: 1 slice of bread with 1 tea spoon of low fat yogurt.
Lunch: instead of 1.5 oz of ground meat choose 1.5 oz of red beans. You will get an optical illusion of meat, but 7g less fat. If you can’t live without meat, eat low fat beef instead of pork chop. You will get 13 g less fat.
Snack: instead of cake, choose a piece of fruit pie (minus 13 g of fat).
Dinner: instead of salami choose a piece of ham (minus 10 g of fat). With a piece of 30% fat cheese you get 10 g less fat compare to 60% fat cheese.

Drink no less than 2 L of water. It will support your digestion and metabolism.

1. Avocado for younger looking skin

People who keep low fat diet usually avoid avocado because it contains a lot of fat. But actually it is high in mono unsaturated fat which reduces cholesterol level in the body. Avocado is a very good source of Vitamin E, which is essential for keeping your skin smooth and young. Also avocado contains potassium which prevents high blood pressure. Avocado is great to use in sandwiches instead of butter spread.

2. Berries as anti aging antioxidants

Most berries especially blackberries, blueberries, blackcurrants contain phytochemicals which are powerful antioxidants. Antioxidants help to protect your body against damage caused by free radicals so they are very important for anti aging nutrition. Red grape is technically not a berry, but it has similar properties.

3. Fish for protein and Omega 3 fats

Your body needs quality proteins and some fat, and it is much better to take fish as a source of these and not red meat. Fish supplies us with Omega 3 fatty acids which stimulate the immune system and lowers risk of heart disease. Some studies have shown that people who eat a lot of fish have lower risk of colorectal, esophageal and stomach cancers.

4. Carrots for cancer protection

Carrots are an excellent source of beta carotene which is a powerful antioxidant that fights aging and many diseases. Studies have shown that people who eat one medium carrot a day significantly reduced risk of lung cancer. Beta carotene also keeps your vision sharp protecting your eyes from age related diseases. It is also important for keeping your immune system strong.

Carrots give you most benefits if eaten uncooked. If you don't feel like eating a row carrot, try adding it to your salads, it gives slightly sweet taste to a salad. Alternatively drink carrot juice once in a while - the juice is a concentrated source of beta carotene.

5. Nuts to bust your immune system

Raw nuts are very high in fiber; they are also a good source of vitamins and potassium, zinc, iron, magnesium, copper and selenium. They control cholesterol level and strengthen your immune system. The only draw back of nuts is that they are high in fat, so a couple table spoons a day is good but not more.

Only row nuts are good anti-aging food. Avoid salted and roasted nuts, they do more damage to your health than bring benefits. A good way to add nuts to your everyday diet is to sprinkle them over a salad or to add them to cereals.

6. Whole meal pasta and brown rice for energy

These contain complex carbohydrates, to insure that you feel full of energy all day. Brown rice is high in fiber and B group vitamins. Only don't make fried rice out of it - steamed brown rice is the best choice. Whole meal pasta is high in fiber and iron.

7. Water to detoxify and keep smooth skin

Water is absolutely essential for our health. You probably have heard that you should drink 8 glasses of water every day, but do you follow the advice? Water helps to get rid of toxins. Also adequate intake of water insures that your skin looks young and healthy. Moisturizing anti-aging creams and lotions are good, but if you drink enough water your skin will be less dry without creams.

Pure bottled water is very good for you, but not exciting. So you can replace it with other nutritious liquids - juices with no added sugar, herbal teas or mineral water. Fresh fruits also are good source of water, for example watermelon is basically 90% water. 8 glasses a day is a rule of thumb, but in hot or windy weather you might need more.

Include these products in your diet on a regular basis and you will see that soon you will feel and look younger than your physical age.

Tanya Turner is an anti-aging researcher and a publisher of Anti-Aging Skincare Guide which provides you with information about anti-aging food, anti-aging supplements, anti-aging treatments and skin care.