There are many schools of thought concerning the diet needed to manage some health conditions. 

Take osteoarthritis as one such condition.  Instead of sitting in a chair all day, bemoaning the lack of mobility or the pain, as old folk used to be known for in previous generations, the new thinking now is to look at diet and lifestyle.  Anti-inflammatory and whole foods with minimal reliance on processed foods is very much the way forward.   Some sufferers now swear by the Keto or low carb regime;  it can be a little strange to get the hang of after a lifetime of eating hugely carohydrate filled meals, but it is possible to stick to a low carb routine, which has many benefits – less weight for the joints to deal with and definitely a reduction in blood pressure.  However, for the average OA patient, a generally healthy diet without extremes would include fruits, vegetables, whole grains, nuts, seeds and olive oil.  In fact, the mediterranean diet is absolutely perfect as it contains all the above plus plenty of oily fish and some meat & poultry.  There is very little processed element in such a diet.

The fruits and vegetables are important as they are rich in antioxidants, vitamins, minerals and fibre, which is known to fight inflammation.  Of these foods, berries,  citrus fruits and leafy vegetables are particularly good.  Oily fish would include salmon and mackeral which contain high amounts of omega fatty acids which are also thought to reduce inflammation and help maintain a healthy heart.