However, it is almost impossible to deny the fact that the approaches of modern medicine (Allopathy) and traditional medicine (like Siddha and Ayurveda) are totally different.
For, modern medicine is largely disease-oriented - you go to a doctor or take a pill only after your health breaks down. In traditional medicine, your food itself is your medicine. You take the prescribed food to prevent yourself from falling ill. The former appears in the picture only when there is a health breakdown, but the latter prevents breakdowns from happening.
In modern medicine, the whole infrastructure - including drug companies, hospitals, pharmacies - are oriented to fix your health, but in the traditional medicine, the health infrastructure is there for you to remain fit.
Of course, we cannot avoid modern medicine altogether. Let us not get into for and against arguments on different health systems - it is enough if we understand that fixing a breakdown is time consuming, requires a lot of resources, and drains your wealth - even the US cannot afford its own healthcare system. In contrast, maintenance - or prevention - is always better than break down. There are no economic losses and emotional sufferings.
Consider Siddha or Ayurveda as a collection of best food and lifestyle practices. They prescribe vegetarian and satvic food. They suggest you to have food only when you are really hungry. They ask you to have your supper of digestive food before sunset. The list goes on. As for lifestyle is concerned, they prescribe meditation and yoga asanas.
We may not need special skills to follow these practices - but if we really want to avoid breakdowns and the sufferings that come with them, we have to invest time and effort for maintenance. Breakdown or maintenance, the choice is ours.