1. Eat lots of fruit and veg
It's recommended that you eat at least 5 portions of a variety of fruit and veg every day. They can be fresh, frozen, canned, dried or juiced.
Getting your 5-a-day is easier than it sounds. Why not chop a banana over your breakfast cereal, or swap your usual mid-morning snack for a piece of fresh fruit?
2. Eat more fish, including a portion of oily fish
Fish is a good source of protein and contains many vitamins and minerals.
Aim to eat at least 2 portions of fish a week, including at least 1 portion of oily fish like salmon or mackerel.
3. Cut down on saturated fat and sugar
You need some fat in your diet, but it's important to pay attention to the amount and type of fat you're eating.
There are 2 main types of fat: saturated and unsaturated. Too much saturated fat can increase the amount of cholesterol in the blood.
Sugary foods and drinks are often high in energy (measured in kilojoules or calories), and if consumed too often can contribute to weight gain. They can also cause tooth decay, especially if eaten between meals.
More than 22.5g of total sugars per 100g means the food is high in sugar, while 5g of total sugars or less per 100g means the food is low in sugar.
4. Eat less salt: no more than 6g a day for adults
Eating too much salt can raise your blood pressure. People with high blood pressure are more likely to develop heart disease or have a stroke.
Even if you do not add salt to your food, you may still be eating too much.
About three-quarters of the salt you eat is already in the food when you buy it, such as breakfast cereals, soups, breads and sauces. Use food labels to help you cut down.
5. Get active and be a healthy weight
As well as eating healthily, regular exercise may help reduce your risk of getting serious health conditions. It's also important for your overall health and wellbeing.
6. Do not get thirsty
You need to drink plenty of fluids to stop you getting dehydrated. It is recommended to drink 6 to 8 glasses every day. This is in addition to the fluid you get from the food you eat.