No matter how many modern diets emerge, they all somehow have their roots in ancient India. There are foods in ancient India that facilitate one for spiritual practices. Most of these foods will be served as Prasadams at Ancient temples even today.
Kadamba Prasadam – Helps you to be younger!

Rice, tamarind, black pepper, asparagus, oil, salt, sesame seeds, turmeric, jaggery, ghee, coriander, eggplant, zucchini, legumes, beans, cucumber, carrot, tomato, sweet potato are the fortifying elements of kadamba prasadam.
Pulihora – For better digestion

This commonly served prasadam at almost every temple, when rightly cooked, will help for a better digestion. It is made of rice, tamarind, peanuts, chillies, mustard, cumin, black pepper, salt, asparagus, turmeric, jaggery, cooking oil, peanuts and cashews.
‘Katte Pongali’ for a healthy appetite

It is made of Rice, fenugreek, cumin, asparagus, ghee, ginger, ginger powder, salt, curry powder, cashew nuts. It not only boosts immunity and digestion but also improves appetite.
Daddhyodhanam – For better intelligence

It is a very common dish at every brahmin household and will be served as prasadam at many temples. It is made of rice, yoghurt, asparagus, coriander, ginger, – chilli ginger powder – this prasadam enhances intelligence. Gives good energy to the body and brain.

Poornalu – Keeps life fluids in balance

This prasadam with a mixture of green gram, jaggery, coconut husk and cardamom nourishes life fluids and keeps them in balance.

Chalimidi – Immune System Booster

Our immune system is the greatest cure for all ailments. The ancient commoners ate this. This prasad is made with rice flour, jaggery, turmeric, cardamom, ghee, camphor, cashews and coconut, is a good fortifier for the immune system.

Coconut milk pudding – Instant Energiser

This ancient food is given especially when one needs an instant boost of attitude. It is made of Coconut Milk , Emerald Camphor, Almond Powder, Saffron, Jaggery and Cow Milk.
The point to note here is, none of them involves the usage of sugar! Our Ancients used Jaggery instead.

-Viswanath Venkat Dasari