If you want to boost your mood, combine your daily apple with some leafy greens, while mixing grapes with onion can lower your blood pressure, according to diet experts.

Rob Hobson, a registered nutritionist with a special interest in food science has revealed the food combinations that can super-boost your health, as well as being healthy on their own.

Having a fish curry, which combines both turmeric and oily fish, can create a powerful anti-inflammatory-while eating a banana together with yogurt can improve your bone health and help with gut bacteria.

Olive oil helps the human body to absorb the vitamin A found in tomatoes and red peppers, which is required for healthy skin and eyes.

While black grapes, rich in polyphenol antioxidant catechin, help to prevent cardiovascular disease, cancer, and neurological disorders, and together with onion can inhibit blood clots and boost cardiovascular health.

Other health-boosting food combinations include garlic and honey, which can help with upper respiratory tract infections, and almonds and berries which can help prevent heart disease.

But a study of 2,000 adults found 21 percent have little or no understanding of vitamins and minerals and their role within their body.

Rob Hobson, speaking on behalf of supplement brand Healthspan, which commissioned the research, said: "We thrive on synergies and many of us create them in our lives without even knowing we are doing them.

"From a biological point of view the body needs synergies to function properly.

"Food synergy is defined by the way in which certain foods and the nutrients they contain work together to offer health benefits stronger than the individual foods alone.

"So, sometimes simply combining two items can supercharge the impact it has on your health.

"While the foods may have their own individual health benefits, this can be even greater when mixing them together as they can help the other one to better do its job.

"Our diet is hugely important for our health and paying more attention to what we eat, and how we combine foods, can be really beneficial and these can then be harnessed to target specific conditions such reducing inflammation, managing diabetes and heart disease or dealing with symptoms of the menopause."

The study also found 54 percent of adults are unaware that combining different foods can benefit their health, and 31 percent never think about mixing foods together to get more out of them.

Yet, 54 percent think their diet is missing key vitamins or nutrients, with 39 percent blaming this on not knowing what vitamins and minerals are in different foods.

Another 36 percent put it down to not knowing what nutrients they need.

Vitamin D (38 percent), iron (33 percent) and vitamin C (31 percent) are among the nutrients people are most likely to think they are lacking.

As a result, 56 percent of adults currently take a supplement, with 46 percent of those taking vitamin D and 35 percent consuming a general multivitamin.

But 44 percent make no effort to ensure they get the right amount of vitamins every day, despite 80 percent believing someone's health can be managed by what they eat.

It also emerged people believed a lack of vitamins and minerals had left 46 percent suffering with a health issue.

Although just 32 percent of those polled, via OnePoll, are confident they would know the signs they are deficient in certain vitamins and minerals.

Dr Sarah Brewer, a medical director working with Healthspan, said, "Food should always be first but cleverly combining combinations of vitamins and minerals in supplements can also play a role in supporting our health."

10 SUPER MEALS TO IMPROVE YOUR HEALTH WITH FOOD SYNERGY, ACCORDING TO ROB HOBSON

1. Salmon, prawn and almond curry Helps with: Reducing inflammation in the body which is at the root of all chronic diseases

Food synergy: Oily fish (salmon, trout, herring, sardines, mackerel) - omega 3 + turmeric (curcumin)

This fish curry is loaded with omega 3 fatty acids found in salmon and curcumin which is the active compound found in turmeric. Together, this food synergy can amplify the anti-inflammatory effects of the individual nutrients alone. Reducing inflammation in the body can help to reduce the risk of many chronic diseases including those of the heart.

2. Overnight oats topped with almonds and berries Helps with: Heart disease

Food synergy: Almonds (flavonoids) with foods rich in vitamin C (berries)

Almond skin contains flavonoids that act as powerful antioxidants in the body. In combination with vitamin C found in foods such as berries, this combination has been shown to help reduce the oxidation of LDL cholesterol. The oxidation of LDL cholesterol is now considered a key factor in the development of heart disease.

3. Tomato, avocado, and basil salad dressed with olive oil Helps with: Heart health, prostate health

Food synergy: Foods high in lycopene (tomatoes) + olive oil

Lycopene is an antioxidant that has been linked to reducing the risk of heart disease. This plant compound has also been associated with an improvement in prostate health. Tomatoes are the richest source of lycopene which is aided in its absorption when combined with fat such as olive oil. Olive oil possesses many health benefits to support good heart health including reducing inflammation and increasing HDL cholesterol.

4. Breakfast smoothie made with probiotic yogurt and banana Helps with: Healthy microbiota, bone health

Food synergy: Probiotic yogurt + banana (prebiotics)

Probiotic yogurt delivers beneficial bacteria such as Lactobacillus to the gut. Maintaining a balance of food to bad bacteria is essential for a healthy microbiota. This is important as the gut is where food is broken down and nutrients are absorbed and delivered around the body. Gut health is also closely linked to immunity. The addition of bananas adds prebiotics (inulin) to the mix. These indigestible fibres are fermented by bacteria in the gut – essentially, they are helping to feed the bacteria in your gut helping it to flourish.

5. Blue cheese and grape salad (include red onions) Helps with: Heart health, blood pressure (circulation)

Food synergy: Black grapes (catechin) + onions

Black grapes are rich in polyphenol antioxidant catechin, which helps to prevent cardiovascular disease, cancer, and neurological disorders and in weight management. Together, onion and grapes inhibit blood clots and boost cardiovascular health. Studies have shown that this combination helps to improve cardiovascular protection by improving circulation.

6. Apple, walnut, and spinach salad Helps with: Cognitive function and mood

Food synergy: Apples (flavonoids) + green leafy vegetables (spinach, kale, rocket) – dietary nitrate

Apples and green leafy vegetables – Apples are rich in flavonoids, and green leafy vegetables are rich in dietary nitrate. Studies reveal that combination of flavonoids and nitrate could increase nitrous oxide production. The increase in nitrous oxide following consumption of flavonoids and dietary nitrate could improve cognitive function and mood. Beetroot is also high in dietary nitrates.

7. Paprika and turmeric chicken (spice rub includes black pepper) Helps with: Joint health

Food synergy: Black pepper (piperine) + turmeric (curcumin)

The active ingredient in turmeric is called curcumin and it has been widely researched for its anti-inflammatory properties. Curcumin is difficult to absorb in the body but in combination with black pepper its absorption is magnified. The active ingredient in pepper is called piperine which is responsible for this absorptive effect.

8. Black bean chili (includes red peppers) Helps with: Iron deficiency anaemia

Food synergy: black beans (iron) + red peppers (vitamin C)

Iron deficiency is the most common nutrient deficiency across the globe. Non-haem iron from plant foods is less easily absorbed in the body. It is widely understood that non-haem iron is more readily absorbed in the presence of vitamin C. Plant source of iron include beans, pulses, lentils, dark green leafy vegetables, nuts and dried fruit. Red peppers are the richest dietary source of vitamin C but others include berries, broccoli, citrus fruits and potatoes.

9. Ginger and turmeric salad dressing (includes honey and garlic) Helps with: Upper respiratory tract infections

Food synergy: Garlic (phenols) + honey

Garlic and honey are often cited as being singularly antibacterial. However, research shown that in combination they have a greater ability to reduce the growth of pathogenic bacteria which is due to the synergistic action of phenols and fatty acids found in the foods. It has also been suggested that in combination these two foods may be a useful alternative treatment for upper respiratory tract infections or can be used alongside pharmaceutically prescribed antibiotics.

10. Tomato, avocado, and chickpea salad dressed with olive oil Helps with: Heart health, prostate health

Food synergy: Foods high in lycopene (tomatoes) + olive oil.

Lycopene is an antioxidant that has been linked to reducing the risk of heart disease. This plant compound has also been associated with an improvement in prostate health. Tomatoes are the richest source of lycopene which is aided in its absorption when combined with fat such as olive oil. Olive oil in itself possesses many health benefits to support good heart health including reducing inflammation and increasing HDL cholesterol.

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