What is high blood pressure?
High blood pressure (hypertension) usually has no symptoms but raises the risk of stroke and heart disease. Changes with good evidence include losing extra weight (roughly 1 point lower for each kilogram lost), eating less salt, the DASH eating pattern, more potassium-rich foods, less alcohol and regular exercise. Some people can lower or stop medicine with their doctor's help, but never stop blood pressure medicine on your own.
What "reverse" means here: improving the condition so your tests and symptoms get better (for type 2 diabetes, remission). Results vary from person to person, and your own doctor can tell you what's realistic for you.
Does Intermittent Fasting Reverse High Blood Pressure?
It may lower blood pressure a little, mainly through weight loss. If you take blood pressure medicine, your doctor may need to adjust it.
About intermittent fasting: Intermittent fasting means going without food for set periods, for example the 5:2 plan (two low-calorie days a week) or eating every other day. It mostly works by cutting calories overall, and in most trials it leads to about the same weight loss as ordinary calorie cutting.
Before you try it: Fasting isn't safe for everyone. Talk to your doctor first if you take insulin or other diabetes medicines (they can cause dangerous low blood sugar when you fast), are pregnant or breastfeeding, have had an eating disorder, or are under 18.
What doctors say in their videos
Does the Keto Diet Reverse High Blood Pressure?
It can lower blood pressure in the short term, partly from weight and water loss. Long-term evidence is limited, and salt still matters.
About the ketogenic (keto) diet: A ketogenic diet is very low in carbohydrate, usually under 20 to 50 grams a day, so the body burns more fat and makes ketones. It lowers blood sugar quickly. It can raise LDL cholesterol in some people, and many find it hard to keep up for a long time.
Before you try it: Talk to your doctor first if you take diabetes medicines (insulin and some pills can cause low blood sugar, and SGLT2 medicines such as Jardiance or Farxiga can cause a rare but serious problem called ketoacidosis on keto), take blood pressure medicine, have kidney or liver disease, or are pregnant.
What doctors say in their videos
Does a Low-Carb Diet Reverse High Blood Pressure?
It can lower it modestly, mainly with weight loss. The DASH eating pattern has the strongest evidence for blood pressure.
About a low-carb diet: A low-carb diet cuts back on sugar, bread, rice, pasta and other starches, usually to under about 130 grams of carbohydrate a day, without going as low as keto. The American Diabetes Association lists it as one of several healthy eating patterns for people with diabetes.
Before you try it: If you take insulin or other medicines that lower blood sugar, cutting carbs can cause low blood sugar. Ask your doctor whether your doses need to change before you start.
What doctors say in their videos
Does Time-Restricted Eating Reverse High Blood Pressure?
Possibly, a little. Some small studies show lower blood pressure, but results are mixed.
About time-restricted eating: Time-restricted eating means eating all your food within a set window each day, such as 8 or 10 hours (16:8 is a common version). It's a type of intermittent fasting. Some people eat less without counting calories, but in larger trials it gave about the same results as simply eating fewer calories.
Before you try it: Talk to your doctor first if you take insulin or other diabetes medicines, are pregnant or breastfeeding, or have had an eating disorder.
What doctors say in their videos
Does the Carnivore Diet Reverse High Blood Pressure?
Nobody knows yet. There are no clinical trials, and processed meats like bacon and deli meat are high in salt, which raises blood pressure.
About the carnivore diet: A carnivore diet means eating only animal foods: meat, fish, eggs and sometimes dairy, with no plants. Because it has almost no carbohydrate, it lowers blood sugar. But there are almost no clinical trials on it; most of what we know comes from personal stories and surveys. Doctors raise concerns about LDL cholesterol, the lack of fiber, and long-term effects nobody has studied.
Before you try it: Talk to your doctor first, especially if you have high cholesterol, heart disease, kidney disease or gout, or take diabetes medicines. Ask about checking your cholesterol after a few months.
What doctors say in their videos
More doctor videos on high blood pressure
Videos from different doctors, newest first. They share their own views, which don't always agree, and we don't rank or endorse any of them.
Other health questions
Sources
The main guidelines and studies behind this page. How we write our pages.
- Whelton et al. 2017 ACC/AHA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults
- Sacks et al. Effects on blood pressure of reduced dietary sodium and the DASH diet. New England Journal of Medicine, 2001
- Neter et al. Influence of weight reduction on blood pressure: a meta-analysis. Hypertension, 2003
- de Cabo & Mattson. Effects of intermittent fasting on health, aging, and disease. New England Journal of Medicine, 2019
- Liu et al. Calorie restriction with or without time-restricted eating in weight loss. New England Journal of Medicine, 2022
- Goldenberg et al. Low and very low carbohydrate diets for type 2 diabetes remission: systematic review and meta-analysis. BMJ, 2021
- Lennerz et al. Behavioral characteristics and self-reported health status among 2029 adults consuming a "carnivore diet". Current Developments in Nutrition, 2021
Written by DoctorsVideos.video as a general summary of published research, not by the doctors in the videos. For education only; it isn't medical advice. Talk to your own doctor before changing your diet or medicines. Last reviewed October 2026.