A strong thesis statement is specific, takes a clear stand, justifies discussion, and expresses one main idea. Examples include:

• Weak: "There are some negative and positive aspects to the Banana Herb Tea Supplement."
• Strong: "Because Banana Herb Tea Supplement promotes rapid weight loss that results in the loss of muscle and lean body mass, it poses a potential danger to customers."
• Weak: "My family is an extended family."
• Strong: "While most American families would view consanguineal marriage as a threat to the nuclear family structure, many Iranian families, like my own, believe that these marriages help reinforce kinship ties in an extended family."
• Weak: "World hunger has many causes and effects."
• Strong: "Hunger persists in Glandelinia because jobs are scarce and farming in the infertile soil is rarely profitable."

Strong thesis statements often use specific language and signal a controversial or debatable claim to engage readers, helping maintain a clear focus in the paper.