Diet and Nutrition

Since your diagnosis you may have had thoughts about food. “What should I be eating?” “What foods could help my treatment?” “Are there any foods I should avoid?” Or, you may not have had the time to consider what and how you are eating.

The most important message is to eat as well as possible. Choosing a variety of foods and well-balanced meals can help you feel better and maximise your energy levels.  Eating well can also help to reduce treatment side effects and support a faster recovery. It is something you can do for yourself which can positively impact your treatment outcome.

Trying to lose weight before treatment begins is not generally encouraged. However, if you have been advised to do so, you should be supported by a healthcare professional to reduce the risk of losing muscle and strength.

If you are having problems with your appetite or you have lost weight without trying to, inform someone from your health care team so they can give you advice and support. This is important since unintentional weight loss can affect your ability to cope with treatment.

If you have been told to follow a particular diet by friends or family, or you have found information online/social media about eating well with cancer, please take a look at our FAQs page.

How can I ‘eat well’?

Eating regular meals every day and including a variety of foods from the various food groups should help you to get all of the nutrients you need.

The ‘Eatwell Guide’ shows the proportions of the main food groups that form a balanced diet.

More information about the food groups and eating well during the prehab phase is provided below:

Carbohydrates

Starchy carbohydrates should be included in each meal or snack. Examples of starchy carbohydrates are; cereals, bread, potatoes, rice, chapattis and pasta.
Starchy carbohydrates provide your body with energy, fibre, vitamins and minerals. Exercising muscles also rely on carbohydrate as their main source of energy.
Where possible choose ‘wholemeal’ or ‘wholegrain’ varieties.

Dairy

Aim to eat 2-3 portions of dairy or dairy alternatives a day. Dairy includes yoghurt, milk / soy milk and cheese.
Dairy / dairy alternatives are an important source of protein, calcium and vitamins.

Protein

Aim to eat at least 2 portions of meat, fish, eggs, beans, pulses, lentils, nuts or meat alternatives such as Quorn or tofu each day. These are an important source of protein, vitamins and minerals such as iron.
Two portions of fish each week, one being oily, will also help you to get some essential fatty acids (omega-3) which is good for heart health.
If you have had problems with anaemia take a look at this link: BDA food fact sheet Iron

Vitamins and minerals

A healthy balanced diet can support the normal functioning of the immune system. Most people can get all the vitamins and minerals they need by eating a healthy, balanced diet, with the exception of vitamin D.
Vitamin D supports bone, teeth and muscle health. Our main source of vitamin D is sunlight. In Scotland, we only get enough of the right kind of sunlight for our bodies to make vitamin D between April and September.
Food sources of vitamin D include oily fish, eggs and fortified foods such as cereals, soya products and spreads.
To help you get enough vitamins D, it is recommended that everyone in Scotland (including children over 1 year) should consider taking a daily supplement containing 10 micrograms of vitamin D (400 IU), particularly during the winter months (October to March). Vitamin D supplements can be found in most supermarkets and pharmacies.
Groups at higher risk of vitamin D deficiency should take a daily supplement all year round. These groups include:
> all pregnant and breastfeeding women
> infants and children under 5 years old
> people who have low or no exposure to the sun, for example those who cover their skin for cultural reasons, are housebound, or indoors for very long periods
> people from minority ethnic groups with dark skin such as those of African, African-Caribbean and south Asian origin, who require more sun exposure to make as much vitamin D

Note: The current guidance on sun safety should be followed. 10–15 minutes of unprotected Scottish sun exposure should be safe. Once sunscreen is correctly applied, your body won’t make any more vitamin D. Staying in the sun for prolonged periods without the protection of high factor sunscreen increases the risk of skin cancer. Sun beds are not a recommended source of vitamin D. Radiotherapy and chemotherapy can make skin more sensitive to the sun. To protect yourself use a high sun protection factor (SPF) and avoid the hottest part of the day (11am-3pm). Remember, it is possible to get sunburn through clothing so apply sunscreen underneath your clothes and wear a hat.

Fruit and vegetables

Have at least 5 portions of a variety of fruit and vegetables per day. This includes fresh, frozen, canned and dried fruit and vegetables.
Fruit and vegetables provide your body with important vitamins and minerals, and are a good source of fibre to keep your bowels moving regularly.

Foods high in fat and sugar

Food and drinks high in fat and/or sugar should be eaten in small amounts only. These include butter, margarine, oil, cream, cakes, biscuits, sweets and soft drinks. They are higher in calories but lower in protein and vitamins and minerals than other food groups.

Fluids

Dehydration affects both mental and physical performance. Aim to drink at least 6-8 cups of fluid each day. Start exercise well hydrated, and drink during and after exercise to stay hydrated.

Eating and exercise

A low fat, high carbohydrate snack or light meal should be eaten 90 minutes to two hours before high intensity/strenuous exercise to ensure you have enough energy for the activity. For example – a small bowl of pasta, banana on toast, beans on toast, boiled egg with bread / toast, cottage cheese with jacket potato.

Protein is needed to build and repair muscles. Adding protein to a post-exercise meal or snack can help muscles repair and recover. Examples include eggs, beans, hummus, a glass of milk, a pot of yoghurt, a handful of nuts and seeds.

Portion sizes

If you’d like to know more about portion sizes take a look at this link: BDA Portion Sizes Fact Sheet

Next steps and support

If you feel like you need to make changes to your diet and you’d like more information about goal setting and long-term change, please visit our Next Steps page.

If you need more general support, a list of cancer charities and the services they offer are listed on the More Support page.