There is a lot of nonsense and mis-information told about what food we must eat and what to avoid and the advice keeps changing. Giving dietary advice is a huge industry and as such the advice has to keep renewing itself - it wouldn't be interesting to keep hearing the same old advice. Yet mankind has been on this planet for 200,000 years without all this information!
In general a little of what you fancy is fine and you should enjoy eating and take pleasure in variety and new experiences. It doesn't seem very healthy to be over-worried about our diet and become fearful of foods. And it can be unhealthy to artificially restrict your diet and miss out on important nutrition and fad diets can be damaging.
However there are huge concerns about the food industry, their production methods, additives, hygiene, preservatives, environmental degradation, food miles and so on and we really do need to get back to a more wholesome food industry and diet. We need to reconnect with food production, learn about food from the ground up and make choices based on knowledge and taste rather than the advertising hype or special offers.
A really good diet should centre on the native foods without the processing and packaging so many of us have got used to. Include fruit, a variety of vegetables, fibrous starchy foods like rice, potatoes, a little bread, pasta, some beans, pulses, eggs, fish, meat, nuts or other protein, dairy or substitute drinks and yoghurts (soya, almond, rice etc). We don't need much, if any, meat: most vegetarians are perfectly healthy.
High fat, high salt, high sugar, highly refined and processed foods and drinks are not healthy and should be taken in smaller amounts, less frequently. Often, prepared meals and packaged foods have a lot of these ingredients 'hidden' in their long lists of ingredients.
Most people in the UK consume far too many calories, too much fat, sugar and salt and not enough vegetables, fibre and oily fish. Around 60% of adults are overweight and a better diet and more exercise would correct this for many.
And a good diet should be part of a healthy lifestyle for maximum effect!
Starchy carbohydrates should make up just over a third of the food you eat. They include potatoes, bread, rice, pasta and cereals.
Choose higher fibre or wholegrain varieties, such as wholewheat pasta, brown rice or potatoes with their skins on.
They contain more fibre than white or refined starchy carbohydrates and can help you feel full for longer.
Try to include at least 1 starchy food with each main meal. Some people think starchy foods are fattening, but gram for gram the carbohydrate they contain provides fewer than half the calories of fat.
Keep an eye on the fats you add when you're cooking or serving these types of foods because that's what increases the calorie content – for example, oil on chips, butter on bread and creamy sauces on pasta.
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?
A portion of fresh, canned or frozen fruit and vegetables is 80g. A portion of dried fruit (which should be kept to mealtimes) is 30g.
A 150ml glass of fruit juice, vegetable juice or smoothie also counts as 1 portion, but limit the amount you have to no more than 1 glass a day as these drinks are sugary and can damage your teeth.
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.
Oily fish are high in omega-3 fats, which may help prevent heart disease.
Oily fish include: salmon, trout, herring, sardines, pilchards, mackerel
Non-oily fish include: haddock, plaice, coley, cod, tuna, skate, hake
You can choose from fresh, frozen and canned, but remember that canned and smoked fish can be high in salt.
Most people should be eating more fish, but there are recommended limits for some types of fish.
Find out more about fish and shellfish
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. More than 1.5g of salt per 100g means the food is high in salt.
Adults and children aged 11 and over should eat no more than 6g of salt (about a teaspoonful) a day. Younger children should have even less.
Get tips on cutting down on salt in your diet
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.
Read more about the benefits of exercise and physical activity guidelines for adults.
Being overweight or obese can lead to health conditions, such as type 2 diabetes, certain cancers, heart disease and stroke. Being underweight could also affect your health.
Most adults need to lose weight by eating fewer calories.
If you're trying to lose weight, aim to eat less and be more active. Eating a healthy, balanced diet can help you maintain a healthy weight.
Check whether you're a healthy weight by using the BMI healthy weight calculator.
Start the NHS weight loss plan, a 12-week weight loss guide that combines advice on healthier eating and physical activity.
If you're underweight, see underweight adults. If you're worried about your weight, ask your GP or a dietitian for advice.
You need to drink plenty of fluids to stop you getting dehydrated. The government recommends drinking 6 to 8 glasses every day. This is in addition to the fluid you get from the food you eat.
All non-alcoholic drinks count, but water, lower fat milk and lower sugar drinks, including tea and coffee, are healthier choices.
Try to avoid sugary soft and fizzy drinks, as they're high in calories. They're also bad for your teeth.
Even unsweetened fruit juice and smoothies are high in free sugar.
Your combined total of drinks from fruit juice, vegetable juice and smoothies should not be more than 150ml a day, which is a small glass.
Remember to drink more fluids during hot weather or while exercising.
Some people skip breakfast because they think it'll help them lose weight.
But a healthy breakfast high in fibre and low in fat, sugar and salt can form part of a balanced diet, and can help you get the nutrients you need for good health.
A wholegrain lower sugar cereal with semi-skimmed milk and fruit sliced over the top is a tasty and healthier breakfast.
Check your Body Mass Index here
We normally do not need to buy extra vitamins and food supplements - we get more than we can use in a normal diet. There is, however, a tendency to vitamin D deficiency , especially during the winter months in the UK and if you work indoors and wear covered-up dress. All about vitamins and minerals
Good recipe books and websites can bring back joy and creativity into our diets and stimulate our own imaginative juices to design our own recipes.
Feeling bloated, can't lose weight, always tired?
Try these pieces of advice from BANT (British Association for Nutrition and Lifestyle Medicine):
Limit whole grains to their natural, unprocessed form eg. wild and brown rice, quinoa, millet etc.
If you need more advice on the different types of food in your diet and how much of each is recommended, the NHS Eatwell Guide is a great starting point.
What do food labels mean?
You hear about the recommended "5-a-day" portions of fruit and vegetables - what makes up 5 a day?
Our portions are often too big - using a smaller plate, eating more slowly and concentrating on your food (not eating whilst watching TV or reading) can make it seem as though you are eating more then your reduce portion size.
Bloating and other gut problems? Here are tips for a happier digestive system.
The BBC Food Website has useful information about different types of diet