Home > Newsletters > Need to Know > Salt water can help control hay fever Updated 09 February 2015 Action Point 0 Cross-contact is when a food that is an allergen comes into contact with a ‘safe food’ and their proteins mix. As a result, each food contains small amounts of the other food. It can happen anywhere so always be mindful to keep utensils clean. More in Newsletters Action point More: Need to KnowSalt water can help control hay fever advertisement Read Health24’s Comments Policy Comment on this story 0 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news Mental health Childhood PTSD may leave lasting imprint on brain Lifestyle Rudeness in workplace costs companies dearly Mental health New tool to predict survival odds after brain injury Mental health Surfing through selfies linked to low self-esteem Lifestyle SEE: 8 places to go hiking in South Africa this summer Medical SEE: 10 medical discoveries that changed the world From our sponsors Keep an eye on your vision Which skin products are better, ‘medical grade’ or ‘over-the-counter’? Win 1 of 6 R5000 cash prizes Win a R2 000 Skin Renewal voucher Live healthier Exercise benefits for seniors » Working out in the concrete jungle Even a little exercise may help prevent dementia Here’s an unexpected way to boost your memory: running Seniors who exercise recover more quickly from injury or illness When sedentary older adults got into an exercise routine, it curbed their risk of suffering a disabling injury or illness and helped them recover if anything did happen to them. No relief for MS » Drug shows promise against MS in mouse study Vitamin D may slow multiple sclerosis Obesity in girls tied to higher MS risk Exercise may not lower women's risk of MS A Harvard study showed no evidence to support the idea that exercise lowers the risk of multiple sclerosis.