"Dairy products have been linked to a risk of developing Parkinson’s. Something in dairy products might negatively impact the oxidation levels in your brain, making symptoms more persistent. This effect was shown to be stronger in men than in women and not seen in those supplementing with calcium.
If you’re going to stop consuming dairy products like milk, cheese, and yogurt, you might want to consider a calcium supplement to make up for the loss of calcium in your diet. However, low calcium intake doesn’t necessarily equal poor bone health, as seen in countries with low dairy and calcium consumption.
Recent research suggests that a defect in how the body manages calcium ions (Ca2+), the form of calcium residing in bone, and also present in dairy, might be to blame for the progression of Parkinson’s disease."
N.b. It's not recent...