But recently, writing for the product testing website, Dr Rachel Woods, who has a PhD in nutrition, said overloading on supplements can cause nausea and diarrhoea, or in more extreme cases, weakened bones and birth defects.<\/p>\n
And, when taken in excess, they have been linked to liver, heart, and kidney damage\u2014which can prove fatal.<\/p>\n
‘Many people take supplements for years without knowing whether they need them or how much is too much,’ she\u00a0wrote<\/a>.<\/p>\n Many people do not realise, she explained, that fat-soluble vitamins like A, D, E, and K aren’t flushed out of the body, which can lead to a build-up of harmful levels.<\/p>\n ‘Too much vitamin D, for example, can lead to a build-up of calcium, which may damage the kidneys and heart, as well as weakening bones,’ she said.<\/p>\n In the spring and summer months the NHS says the majority of people should get all the vitamin D they need through sunlight.\u00a0<\/p>\n The nutrition expert warned that those who take<\/p>\n The experts warned that too much turmeric in supplements particularly if combined with black pepper can lead to liver damage<\/p>\n However, in the autumn and winter months, people may need to take vitamins to ensure they get the recommended 10 micrograms (mcg) a day.<\/p>\n This is how much adults and children above the age of one need, but babies up to the age of one year only need 8.5 to 10 mcg per day.<\/p>\n The NHS advice is that you should never take more than 100 mcg of any one vitamin a day, and children between one and ten should have no more than 50 mcg.\u00a0<\/p>\n Babies under 12 months old should never have more than 25 mcg of the vitamin per day.\u00a0<\/p>\n Meanwhile, Dr Woods added: ‘High doses of vitamin A can cause liver damage, birth defects in pregnancy, and decreased bone density.’<\/p>\n The right amount of vitamin A needed for adults between the ages of 19 and 64 for men is 700 mcg per day, while for women it is 600mcg per day.<\/p>\n The NHS warns that you shouldn’t take more than 1.5mg of vitamin A a day which is the equivalent of 1500mcg\u2014but they don’t specify if the limit for children is lower.<\/p>\n \u00a0<\/p>\n She continued: ‘Even water-soluble vitamins can cause problems, with long-term overuse of vitamin B6 being linked to nerve damage.<\/p>\n ‘Since most people don’t regularly check their blood nutrient levels, they often don’t realise something is wrong until symptoms appear.’\u00a0<\/p>\n The amount of vitamin B6 needed for those between the ages of 19 and 64 is 1.4mg a day for men and 1.2mg a day for women.<\/p>\n And the NHS warns more than 200mg a day can lead to loss of feeling in the arms and legs\u2014known as peripheral neuropathy.<\/p>\n![\"The](\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2025\/08\/100938895-14972387-image-a-1_1754401487845.jpg\")
<\/p>\n![\"The](\"https:\/\/www.newsbeep.com\/uk\/wp-content\/uploads\/2025\/08\/100011371-14972387-The_experts_warned_that_too_much_turmeric_in_supplements_particu-a-2_175440481765.jpeg\")
<\/p>\n