Flaxseed is available in two forms: whole and ground. Whole flaxseed contains the entire seed. The ground version is produced by grinding or cracking the whole seed and is the most popular form of flaxseed on the market today. In general it's easier to digest than whole flaxseed which means that also nutrients from ground flaxseed will absorb better than form whole flaxseed.
The benefits of flaxseed include weight loss, increased energy, decreased cholesterol, improved digestion, and cancer prevention. However, there are concerns about the safety of consuming flaxseed. Flaxseed is not recommended during pregnancy and lactation, due to potential adverse effects.