User talk:T kalai kovan

Welcome!
Hi, T kalai kovan. Welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Our intro page contains a lot of helpful material for new users—please check it out! If you need help, visit Questions, ask me on my talk page, or place   on this page, followed by your question, and someone will show up shortly to answer your questions. DMacks (talk) 07:08, 18 March 2016 (UTC)

Essentiality of amino acids
I should explain my edits, and why I undid yours...

There is a whole "In human nutrition" section that gives an overview of the essential vs non-essential classification. The WP:LEAD of the article just summarizes the key points, not every detail (such as a list of the actual essential ones) or focusing extensively and only on that aspect (and only in humans) of their importance. That's why I undid your first edit...the previous content was a better summary and less redundant with earlier sentences.

The "Classification" section, as it explicitly says, is instead about "structure and the general chemical characteristics of their R groups". Other types of classification, such as nutritional aspects, go in other sections. That's why I undid your second edit...it was off-topic where it was, and where it would be on-topic it would have been completely redundant to what was already there. DMacks (talk) 07:09, 18 March 2016 (UTC)