Seth Rogen, an actor best known for his roles in comedies such as Knocked Up, visited Capitol Hill last week to speak to Senators about his personal experience with Alzheimer's disease. Rogen tells the tale of his mother-in-law, who was diagnosed with early-onset Alzheimer's disease soon after he met the woman who would become his wife, Lauren Miller.

While she had been a teacher for 35 years, it only took a few short years after her diagnosis for this horrible disease to take away her ability to speak and care for herself. Upon realizing how little support there is for Alzheimer's disease -- and the lack of effective treatments that significantly slow or stop progression of the disease -- Rogen and his wife decided to do something about it.

The couple created Hilarity for Charity, an organization that uses Rogen's love of comedy to host events at colleges and universities across the country to raise funds for families struggling with Alzheimer's disease.

Rogen was disappointed at the lack of attendance by Senators to his testimony, even tweeting a photo of the many empty seats, noting, "All those empty seats are Senators who are not prioritizing Alzheimer's. Unless more noise is made, it won't change."

Watch Seth Rogen's testimony below: