Grace Winiecki spends 40 minutes each day with a red light bucket on her head — a device she claims is making a significant difference to her life.

Key points:

• National clinical trials are underway into the effectiveness of LED light treatment for people with Parkinson's disease
• A group of Tasmanians have been experimenting with light helmets for a few years, reporting positive results
• The Tasmanians were inspired by studies on mice which showed LED lights stopped brain cells dying

The 63-year-old was diagnosed with Parkinson's disease 11 years ago and began her own light treatment, also known as photobiomodulation, last April.

"I'm probably better now than what I was seven years ago," Mrs Winiecki said.

Mrs Winiecki said since using red lights, she shakes a lot less, can dress herself easier, feels happier, lighter and laughs more.

"I don't think it'll ever be a cure, but it definitely slows progress and improves some [Parkinson's] symptoms," Mrs Winiecki said.

"We're getting a lot of good feedback from people who are using the lights, so it'd be a huge coincidence if they're all getting better just because they're wearing a bucket on their head."