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Egyptian FM holds calls with Iranian counterpart , U.S. Envoy on regional developmentsZverev into French Open last-fourIsraeli fire kills four people in Gaza, medics sayEgypt, Singapore discuss expanding cooperation in tourism, antiquitiesAncelotti eases Neymar W. Cup fearsArab, Islamic states condemn Israeli actions at Al-AqsaSyria Hopes for Terrorism Delisting to Spur Economic RecoveryBenfica linked with Fulham’s SilvaVan der Breggen takes Giro leadKremlin: Saudi Arabia Named Guest of Honor at St. Petersburg Economic ForumTrump administration proposes 25% tariff to punish Brazil over trade practicesرياضة محلية‘Really cool to share this journey with her’: Michelle Wie West playing for her family at U.S. Women’s OpenArchaeological Replicas Showcase Saudi Arabia’s Rich History at Kuala Lumpur Int’l Book FairRenewable Energy Helps Red Sea Global Avoid 118,000 Tons of Carbon EmissionsLetter: Carol Rumens obituaryEngland v India: third and deciding women’s T20 cricket international – liveHealthVolunteers serve comfort food in a worrying Ebola outbreak – Sault Michigan NewsEconomyTrump signs AI executive order asking companies to give government early access to modelsLocalSouth West Water fined nearly £2million after supplying homes with parasite-ridden water that left four people in hospital – and telling people it was safe to drinkScience & TechYour car is following you – how to reclaim your data privacy on the open roadEgyptian FM holds calls with Iranian counterpart , U.S. Envoy on regional developmentsZverev into French Open last-fourIsraeli fire kills four people in Gaza, medics sayEgypt, Singapore discuss expanding cooperation in tourism, antiquitiesAncelotti eases Neymar W. Cup fearsArab, Islamic states condemn Israeli actions at Al-AqsaSyria Hopes for Terrorism Delisting to Spur Economic RecoveryBenfica linked with Fulham’s SilvaVan der Breggen takes Giro leadKremlin: Saudi Arabia Named Guest of Honor at St. Petersburg Economic ForumTrump administration proposes 25% tariff to punish Brazil over trade practicesرياضة محلية‘Really cool to share this journey with her’: Michelle Wie West playing for her family at U.S. Women’s OpenArchaeological Replicas Showcase Saudi Arabia’s Rich History at Kuala Lumpur Int’l Book FairRenewable Energy Helps Red Sea Global Avoid 118,000 Tons of Carbon EmissionsLetter: Carol Rumens obituaryEngland v India: third and deciding women’s T20 cricket international – liveHealthVolunteers serve comfort food in a worrying Ebola outbreak – Sault Michigan NewsEconomyTrump signs AI executive order asking companies to give government early access to modelsLocalSouth West Water fined nearly £2million after supplying homes with parasite-ridden water that left four people in hospital – and telling people it was safe to drinkScience & TechYour car is following you – how to reclaim your data privacy on the open road

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US dollar56.03EGPEuro62.57EGPBritish pound75.01EGPSaudi riyal14.94EGPUAE dirham15.26EGPKuwaiti dinar180.31EGPJordanian dinar79.03EGPQatari riyal15.39EGPTurkish lira1.12EGPChinese yuan8.40EGPGold 246,983.06EGP/gGold 216,110.18EGP/gGold 185,237.30EGP/gSilver88.73EGP/g

Health

فيتامين C في موسم البرد.. لماذا لا تعني الجرعات الأكبر حماية أفضل؟

By روسيا اليوم · 1 hour ago · 1 min read روسيا اليوم ↗

فيتامين C في موسم البرد.. لماذا لا تعني الجرعات الأكبر حماية أفضل؟

ما يعرفه ريفو عن الخبر

لا تعني زيادة جرعات فيتامين سي بالضرورة توفير حماية أفضل للجسم خلال موسم البرد.
قد تسبب الجرعات المفرطة من فيتامين سي مشاكل هضمية مثل الغثيان والإسهال وزيادة خطر تكوّن حصى الكلى.
يكفي اتباع نظام غذائي متوازن من الفواكه والخضراوات لتلبية احتياجات الجسم من فيتامين سي.
يُنصح باستخدام المكملات الغذائية فقط عند التأكد من وجود نقص في الفيتامين أو في حالات طبية محددة.

أفادت الدكتورة سفيتلانا بورناتسكايا، أخصائية الأمراض المهنية، أن فيتامين С ضروري لوظائف الجسم الطبيعية، ولكن تناول جرعة إضافية لا يحمي من التهابات الجهاز التنفسي الفيروسية الحادة.

المصدر: روسيا اليوم

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