Hi Suez,

I have used whey protein powder and plant based protein powder. Whey is usually made from dairy and plant based can be made from pea, rice and hemp or a combination as well as sprouts. As with any food it best to seek out the highest quality. I always look for organic and/or pharmaceutical grade supplements. For years I've used Life Extension Foundation (www.lef.org) that uses the highest standard in producing their supplements. They offer substantial discounts to members. Amazon.com also has an auto ship policy that offers 15% discounts which helps reduce costs.

I used whey protein for many years but recently switched to a plant based protein called Life's Basic Plant Protein. I switched because I decided to go to a full plant based diet and eliminate all dairy and animal food for environmental, spiritual and health reasons. I'm a firm believer in using only fresh food (organic when possible) ingredients in balanced recipes to make sure I get variety and the best quality. Hopefully it will add to my lifespan or at the very least keep me disease free.

Good health!