A structured juice diet can provide women with a short-term reset for their digestive system while potentially supporting weight loss goals. Research shows that juice-based approaches may offer benefits such as increased nutrient absorption and reduced inflammation, but the key is to do it properly. This means using fresh fruits for juicing, rather than commercial juices.
However, medical experts emphasize the importance of understanding the advantages and limitations before starting this eating plan.
To succeed in juicing, you need to choose the right nutrient-dense juices while maintaining adequate protein and fiber intake. This way, you can prevent nutritional deficiencies that are commonly associated with improperly planned juicing
Understanding the 7-Day Juice Diet

What Is a Juice Diet?
A juice diet involves consuming primarily fresh vegetable and fruit juices for a predetermined period while eliminating solid foods.
Unlike smoothies, which retain fiber by blending whole produce, juicing extracts liquid nutrients while removing the pulp. This process concentrates vitamins, minerals, and antioxidants, making them easier to digest for the human body.
Most juice diets last between three and seven days, though some people extend them longer under medical supervision.
Why Consider a Juice Diet?
Women often experience slower metabolism and increased inflammation due to hormonal changes. A temporary juice diet may help reset eating patterns while providing the body with the necessary concentrated nutrients that support cellular repair.
Certain studies have shown that drinking certain vegetable and fruit juices can reduce blood pressure and provide anti-inflammatory compounds. The high water content also supports hydration, which becomes increasingly important as kidney function naturally declines with age.
Is It Suitable for Women Over 40?
Women in their 40s face certain health risks and changes, including decreased bone density, hormonal fluctuations, and increased risk of cardiovascular disease.
While short-term juice diets may offer benefits, you have to plan carefully. Otherwise, you risk facing protein deficiency. There are multiple studies that prove the importance of protein intake for older women in maintaining muscle mass.
Another potential risk is unstable blood sugar levels, especially if your fruit juice isn’t made up of 100% natural sources, as per this study.
7-Day Juice Diet Plan

Day 1
Don’t shock your body into drinking vegetable and fruit juice blends right away. Start with gentle green vegetables like cucumber, celery, and spinach, with apple added for a mild flavor profile. Mixing this should create a juice that’s rich in potassium and vitamin K. You can also add lemon juice for vitamin C and to help support the detoxification process.
Drink this mixture twice throughout the day, spacing servings four hours apart. Include plenty of water between juice servings to remain hydrated and support kidney function.
Day 2
After the first day, you can start introducing more pronounced flavors into your palate, adding tomatoes, red bell peppers, and fresh herbs like parsley.. Tomatoes provide lycopene, a powerful antioxidant that supports heart health and may reduce inflammation. The vitamin A from carrots supports immune function, while parsley adds natural diuretic properties.
This combination of fruits and vegetables delivers a substantial amount of vitamins C and A, which, according to studies, are important for skin health and disease prevention.
Day 3
Focus on antioxidant-rich berries combined with leafy greens for maximum nutrient density. Blend strawberries, blueberries, kale, and cucumber to create a vibrant purple juice packed with anthocyanins. Research shows that these compounds support brain health and may help reduce age-related cognitive decline. The natural sugars from berries provide energy and satisfy your sweet tooth, while kale delivers iron and calcium.
Add ginger root to support your digestion and for its anti-inflammatory properties, which become increasingly important after the age of 40.
Day 4
Incorporate beets and carrots for their natural nitrates and beta-carotene content. Studies on beet juice have shown that it helps improve athletic performance and support cardiovascular health through enhanced blood flow. The earthy flavor pairs well with apple and mint. This combination provides folate, which supports cellular function and may help maintain energy levels.
Excessive fatigue isn’t uncommon in women after they turn 40, which is what makes the nutrient profile of this juice particularly beneficial.
Day 5
Return to green vegetables with a spinach-based juice featuring apple, celery, and fresh herbs.
Spinach provides lutein for eye health and magnesium for bone support. The apple adds natural sweetness while celery contributes potassium for proper muscle function.
The lighter profile of this juicing combination allows your digestive system to rest while maintaining steady blood sugar levels throughout the day.
Day 6
Create a warming blend using ginger, lemon, and orange, along with carrots for their vitamin C and beta-carotene content. Ginger supports digestion and may help reduce inflammation associated with hormonal changes. The citrus provides bioflavonoids that support immune function, while carrots add natural sweetness. This combination helps combat the reduced immune response that often occurs with aging.
Day 7
Finish your 7-day juice diet with a balanced mix of all previous ingredients, creating a rainbow juice that combines the week's nutritional benefits. Include carrots, oranges, spinach, cucumber, and a small amount of ginger.
This final day allows you to assess which flavors and ingredients made you feel most energized while preparing your palate for the transition back to solid foods.
Benefits of a Juice-Based Diet

Concentrated vegetable and fruit juices deliver high levels of vitamins, minerals, and phytonutrients in easily absorbed forms.
Research indicates that certain plant compounds become more bioavailable through juicing, particularly carotenoids found in carrots and leafy greens. The high water content supports kidney function and may help reduce bloating by promoting natural fluid balance. The temporary break from processed foods allows taste buds to reset, potentially reducing cravings for overly sweet or salty foods.
Risks and Considerations
Juicing removes the fiber content of fruits and vegetables. It’s important for blood sugar regulation and digestive health. Without fiber, natural fruit sugars enter the bloodstream fast, potentially causing energy spikes and crashes. This makes it a particularly bad combination for women over 40 who naturally face an increased risk of insulin resistance. Protein deficiency is another concern as muscle mass naturally declines with age.
Studies show that consuming only juices for extended periods may lead to nutrient gaps and have a negative impact on the oral and gut microbiome.
Recap of Key Concepts

Summary of Benefits and Risks
Short-term juice diets may provide concentrated nutrients and digestive rest while supporting hydration and reducing inflammation. However, they lack fiber and protein. Always consider these limitations and weigh them alongside potential benefits like improved energy and reduced bloating.
There’s enough research proving the benefits of juice diets. However, they work best as brief resets. They aren’t long-term solutions. Whole foods are still the best source of nutrition.
Tips for a Successful Juice Diet
Choose organic produce when possible to minimize pesticide exposure, and wash all fruits and vegetables thoroughly before juicing. For best results, drink juice immediately after preparation to preserve vitamin content. If you do have to store them, put them inside glass containers for no more than 24 hours.
Pay close attention to your energy levels and stop the diet if you experience dizziness, extreme fatigue, or other concerning symptoms. Include variety in your juice selections to maximize nutrient diversity and prevent boredom.
Transitioning Back to Regular Eating
After the seven-day cleanse, begin the eighth day with easily digestible foods, such as steamed vegetables, fresh fruits, and small portions of lean proteins like fish or eggs. Avoid immediately returning to processed foods, caffeine, or large meals.
Gradually increase portion sizes over three to four days while maintaining the increased vegetable intake that you’ve already established over the week. This transition period helps preserve the benefits gained while preventing digestive discomfort.
Sources
- Zhang X, Liao X, Wang Y, et al. Health effects of fruit juices and beverages with varying degrees of processing. Food Science and Human Wellness, 2024, 13(5): 2456-2479. https://doi.org/10.26599/FSHW.2022.9250202
- Zheng, Jie, et al. "Effects and Mechanisms of Fruit and Vegetable Juices on Cardiovascular Diseases." International Journal of Molecular Sciences, vol. 18, no. 3, 2017, p. 555, https://doi.org/10.3390/ijms18030555.
- Deer, Rachel R., and Elena Volpi. "Protein Intake and Muscle Function in Older Adults." Current Opinion in Clinical Nutrition and Metabolic Care, vol. 18, no. 3, 2015, p. 248, https://doi.org/10.1097/MCO.0000000000000162.
- Murphy, Mary M., et al. "100 % Fruit Juice and Measures of Glucose Control and Insulin Sensitivity: A Systematic Review and Meta-analysis of Randomised Controlled Trials." Journal of Nutritional Science, vol. 6, 2017, p. e59, https://doi.org/10.1017/jns.2017.63.
- Alberts, Adina, et al. "Vitamin C: A Comprehensive Review of Its Role in Health, Disease Prevention, and Therapeutic Potential." Molecules, vol. 30, no. 3, 2025, p. 748, https://doi.org/10.3390/molecules30030748.
- Lorzadeh, Elnaz, et al. "The Effect of Anthocyanins on Cognition: A Systematic Review and Meta-analysis of Randomized Clinical Trial Studies in Cognitively Impaired and Healthy Adults." Current Nutrition Reports, vol. 14, no. 1, 2025, p. 23, https://doi.org/10.1007/s13668-024-00595-z.
- Domínguez, Raúl, et al. "Effects of Beetroot Juice Supplementation on Cardiorespiratory Endurance in Athletes. A Systematic Review." Nutrients, vol. 9, no. 1, 2017, p. 43, https://doi.org/10.3390/nu9010043.
- Purkiewicz, Aleksandra, et al. "The Impact of the Method Extraction and Different Carrot Variety on the Carotenoid Profile, Total Phenolic Content and Antioxidant Properties of Juices." Plants, vol. 9, no. 12, 2020, p. 1759, https://doi.org/10.3390/plants9121759.
- Sardaro, Maria L., et al. "Effects of Vegetable and Fruit Juicing on Gut and Oral Microbiome Composition." Nutrients, vol. 17, no. 3, 2025, p. 458, https://doi.org/10.3390/nu17030458.
- Henning, Susanne M., et al. "Health Benefit of Vegetable/Fruit Juice-based Diet: Role of Microbiome." Scientific Reports, vol. 7, 2017, p. 2167, https://doi.org/10.1038/s41598-017-02200-6.
FAQs
Is a 7-day juice cleanse safe for women over 40?
For most healthy women, a short-term, 7-day juice plan is generally safe when viewed as a reset. Our plan focuses on nutrient-dense vegetables and fruits to support your body. However, it is crucial to listen to your body and consult with your doctor before starting, especially if you have pre-existing health conditions like diabetes or low blood pressure.
I'm worried about losing muscle mass. How can I get enough protein?
This is a valid concern, as muscle maintenance is key after 40. To help preserve muscle mass during the cleanse, we recommend adding a scoop of clean, plant-based protein powder (like pea or hemp) to at least one of your daily juices. You can also boost protein intake by blending in spinach, chia seeds, or flax seeds.
How does a juice diet affect hormones, especially during perimenopause or menopause?
A well-designed juice plan can support hormonal balance. Our recipes include ingredients rich in phytoestrogens, antioxidants, and anti-inflammatory compounds, such as leafy greens, berries, and flax seeds. By flooding your body with these targeted micronutrients and reducing inflammatory triggers, a juice cleanse can help manage common symptoms.
Will I be hungry and exhausted all the time?
While you will be in a calorie deficit, you can manage energy levels and hunger. We recommend spacing 4-5 juices throughout the day to help keep your blood sugar stable. Including high-volume vegetables like cucumber and celery adds fullness, and blending a small amount of healthy fat (like 1/4 avocado) into one juice can dramatically increase satiety and keep you feeling more energized.
What happens after the 7 days? I don't want to regain all the weight.
Think of this 7-day plan as a powerful reset, not a permanent diet. The goal is to curb sugar cravings and kickstart healthier habits. To maintain your results, it's essential to gradually reintroduce whole foods after the cleanse. We recommend focusing on a sustainable diet rich in lean protein, high-fiber vegetables, and healthy fats to prevent a "yo-yo" effect.